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DR. AMORN PIMANMAS (PROFESSOR)
Faculty
:
School of Civil Engineering and Technology (CET)
Name
:
Dr. Amorn Pimanmas (Professor)
Position
:
Professor
E - Mail
:
amorn@siit.tu.ac.th
Phone Rangsit
:
+66-2-986-9009, +66-2-986-9101, +66-2-564-3226
Phone Bangkadi
:
Phone Extension
:
1910
  Education
  • B.Eng. (1st Class Honors) in Civil Engineering, Chulalongkorn University, Thailand
  • M.Eng. in Structural Engineering, University of Tokyo, Japan
  • Ph.D. in Structural Engineering, University of Tokyo, Japan
  Academic Awards
  • Gold Medal Award, Chulalongkorn University, 1994
  • Anton Tedesco Award (Fellowship Part), International Association of Bridge and Structural Engineering (IABSE)
  • 2010 SIIT Best Teaching Award
  • 2011 Outstanding Research Award (Science and Technology), Thammasat University
  Research Areas
Evaluation of seismic performance of reinforced concrete buildings; Nonlinear finite element analysis of reinforced concrete; Inspection, repairing and strengthening of reinforced concrete.
  Research Interests
Earthquake Resistant Structural Design

The goal of the research is to study the seismic performance of sub-standard non-ductile reinforced concrete members and develop a suitable structural design approach for buildings and bridges. The research begins with the evaluation of seismic performance of existing sub-standard reinforced concrete members in buildings and bridges. Several critical components such as sub-assemblages, beam-column joint, column, etc., will be tested. The failure mechanism of these critical components will be investigated. Then, appropriate design methods and reinforcement detailing shall be proposed. The research will emphasize reinforcement detailing in plastic hinge zones, shear failure in joints and columns, confinement, bond distress and lap splice failure and column hinging mechanisms.

Seismic Retrofit of Reinforced Concrete Buildings

The objective of the research is to retrofit existing buildings and bridges against seismic effect. The cost-effective strengthening methods will be proposed for critical sub-assemblages or components of the structure. An example of a successful retrofit method is Joint Planar Expansion which strengthens the beam-column joint. The strengthening scheme will enhance not only the capacity and displacement but also will change the failure mode from brittle to ductile failure. The research will propose both component strengthening and structural system strengthening, such as steel bracing and shear wall addition. Advanced composite materials such as fiber reinforced polymers will also be used for retrofit.

Nonlinear Behavior and Modeling of Reinforced Concrete

The research includes the advanced study of the nonlinear behavior and modeling of reinforced concrete. A behavioral model of beam column joints will be developed that includes bond deterioration, joint shear failure, and splitting cracks in beams and columns. A strut and tie model is also applied to explain the flow of forces within the beam-column joint. Moreover, various numerical and finite element analysis tools are utilized to analyze the behavior of components and structures. The finite element models will be both member based and element based with the advanced state-of-the-art constitutive models of reinforced concrete.

Ongoing Research Projects:
  • Delamination behavior of FRP-strengthened RC members
  • Product design of FRP anchoring device
  • Reduction of size effect in shear failure with artificial crack device
  • Development of design method and computer program for FRP strengthened beam for use in Thailand
  • Finite element analysis of FRP-strengthened beam
  • Behavior of damaged reinforced concrete members
  • Non-linear earthquake analysis of RC buildings
  • Behavior of beam-column and slab-column joints under reversed cyclic loading
  • Optimum Design of FRP strengthening system
  • Repairing and strengthening method of beam with web openning
External Fund for Research Projects:
  1. New Researcher Grant: Research Fund No. TRG4580105, “Behavior and failure mode of reinforced concrete members damaged by structural pre-cracking”. Thailand Research Fund (TRF), 2002-2004
  2. Mid-Level Researcher Grant: Research Fund No. RMU4880022, “Preparation of reinforced concrete members against seismic hazard”. Thailand Research Fund (TRF), 2005-2008
  3. Research Grant: “Development of structural design guideline for tsunami evacuation shelter”, Department of Public Works and City Planning, 2007-2008
  4. Research Grant: “ Structural evaluation of precast construction of NHA (National Housing Authority) Low-Cost Housing Project, Center of Standard Engineering Company Limited, 2005- 2006
  5. Royal Golden Jubilee Scholarship Batch no. 10, Thailand Research Fund (TRF) 2007-2010
  6. Royal Golden Jubilee Scholarship Batch no.12, Thailand Research Fund (TRF)
  7. Research Grant, “The Improvements of Seismic Performance for Reinforced Concrete Bridge Piers with unbonded Reinforcements and interface dowels”, Thammasat University, 2007-2009
  8. Research Grant, “Retrofitting substandard reinforced concrete column against seismic loading”, Thailand Research Fund (TRF), 2008-2010
  9. Researcher Scholar Grant, Research Fund No. RSA5280034, Strengthening substandard reinforced concrete members by ferrocement, Thailand Research Fund (TRF) 2009-2012
  Work Experiences
  • 2001-Present: SIIT
  • 2000-2001: Research Fellow, The University of Tokyo, Japan
  Professional Activities
  • Secretary-General, Council of Engineers
  • Board, Council of Engineers
  • Board, Engineering Institute of Thailand
  • Advanced Research Scholar, Thailand Research Fund
  • Board, Council of Military Education
  List of Publications
Books:
  1. Koichi Maekawa, Amorn Pimanmas, Hajime Okamura (2003). Nonlinear Mechanics of Reinforced Concrete, SPON press, 721 pp.
  2. Amorn Pimanmas, Failure Behavior and Testing of Engineering Material (in Thai), 234 pp.
International Journals
  1. Shahzad Saleem; Qudeer Hussain; and Amorn Pimanmas, Compressive Behavior of PET FRP-Confined Circular, Square and Rectangular Concrete Columns, ASCE's Journal of Composites for Construction (Accepted for Publication).
  2. Pragasit Juntanalikit; Tidarut Jirawattanasomkul; and Amorn Pimanmas. Experimental and numerical study of strengthening non-ductile RC columns with and without lap splice by Carbon Fiber Reinforced Polymer (CFRP) Jacketing, Engineering Structures, Vol. 125, October 2016, pp. 400-418.
    Full-text
  3. Hussain, Qudeer; Winyu Rattanapitikon; and Amorn Pimanmas. Axial load behavior of circular and square concrete columns confined with sprayed fiber-reinforced polymer composites, Polymer Composites, Vol.37, No. 8, August 2016, pp.2557-2567.
    Full-text
  4. Hussain, Qudeer and Amorn Pimanmas (2016). Shear strengthening of RC deep beams with sprayed fibre-reinforced polymer composites (SFRP) and anchoring systems: part 1. experimental study, European Journal of Environmental and Civil Engineering, Vol. 20, No. 1, January 2016, pp. 79-107.
    Full-text
  5. Hussain, Qudeer and Amorn Pimanmas (2015). Shear strengthening of RC deep beams with openings using sprayed glass fiber reinforced polymer composites (SGFRP) : part 1. experimental study, KSCE Journal of Civil Engineering, Vol. 19, No. 7, November 2015, pp. 2121-2133.
    Full-text
  6. Hussain, Qudeer and Amorn Pimanmas (2015). Shear strengthening of RC deep beams with sprayed fiber-reinforced polymer composites (SGFRP): part 2. finite element analysis, Latin American Journal of Solids and Structures, Vol. 12, No. 7, pp. 1266-1295.
  7. Panuwat Joyklad and Amorn Pimanmas. (2011). Cyclic stress development in substandard beam–column joint,Proceedings of the ICE - Structures and Buildings, Vol.164, No. 3, June 2011, pp. 211-225.
  8. Dam Xuan, Thai and Amorn Pimanmas (2011). Response of lap splice of reinforcing bars confined by FRP wrapping: modeling approach, Structural Engineering and Mechanics, Vol. 37, No. 1, January 2011, pp. 95-110.
  9. Amorn Pimanmas and Dam Xuan Thai (2011). Response of lap splice of reinforcing bars confined by FRP wrapping: application to nonlinear analysis of RC column, Structural Engineering and Mechanics, Vol. 37, No. 1, January 2011, pp. 111-129.
  10. Amorn Pimanmas, Panuwat Joyklad, and Pennung Warnitchai (2010). Structural design guideline for tsunami evacuation shelter, Journal of Earthquake and Tsunami, Vol. 4, No. 4, December 2010, pp. 269-284.
  11. Amorn Pimanmas and Preeda Chaimahawan (2010). Shear strength of beam-column joint with enlarged joint area,Engineering Structures, Vol. 32, No. 9, September 2010, pp. 2529-2545.
  12. Amorn Pimanmas (2010). Web crushing strength of reinforced concrete beams with pre-existing cracks, Magazine of Concrete Research, Vol. 62, No. 9, September 2010, pp. 665-678.
  13. Preeda Chaimahawan and Amorn Pimanmas (2010). Behavior and analysis of beam-column joint strengthened by cast-in-situ expansion, Magazine of Concrete Research, Vol. 62, No. 5, May 2010, pp. 347-363.
  14. Amorn Pimanmas (2010). Strengthening R/C beams with opening by externally installed FRP rods: behavior and analysis, Composite Structures, Vol. 92, No. 8, July 2010, pp. 1957-1976.
  15. Preeda Chaimahawan and Amorn Pimanmas (2009). Nonlinear FEM analysis of RC beam-column joint strengthened by cast in-situ joint expansion, Journal of Advanced Concrete Technology, Vol. 7, No. 3, October 2009, pp. 307-326.
  16. Preeda Chaimahawan and Amorn Pimanmas (2009). Seismic retrofit of substandard beam-column joint by planar joint expansion, Materials and Structures, Vol. 42, No. 4, May 2009, pp. 443-459.
  17. Amorn Pimanmas; Sittisak Imsombat; and Knut Hj. Neilsen (2009). New Phra-Nangklao bridge – a balanced cantilever prestressed concrete bridge in Thailand, Structural Engineering International, Vol. 19, No. 1, February 2009, pp. 38-40.
  18. Amorn Pimanmas and Teeraphot Supaviriyakit (2008). Cyclic behavior of non-seismically designed interior reinforced concrete beam-column connections, Songklanakarin Journal of Science and Technology, Vol. 30, No. 3, May-June 2008, pp. 323-332.
  19. Teeraphot Supaviriyakit and Amorn Pimanmas (2008). Comparative performance of sub-standard interior reinforced concrete beam-column connection with various joint reinforcing details, Materials and Structures, Vol. 41, No. 3, April 2008, pp. 543-557.
  20. Teeraphot Supaviriyakit; Amorn Pimanmas; and Pennung Warnitchai (2008). Nonlinear finite element analysis of non-seismically detailed interior RC beam-column connection under reversed cyclic load, ScienceAsia: Journal of the Science Society of Thailand, Vol. 34, No. 1, March 2008, pp. 49-58.
  21. Theeraphot Supaviriyakit; Amorn Pimanmas; and Pennung Warnitchai (2007). Cyclic response of non-seismically detailed interior RC beam– column connection with varying column tributary area, Magazine of Concrete Research, Vol. 59, No. 5, June 2007, pp. 351-365.
  22. Amorn Pimanmas and Jiraphong Tisavipat (2005). Effect of existing cracks on shear failure behaviour of reinforced concrete members, Magazine of Concrete Research, Vol. 57, No. 8, pp. 485-495.
  23. Amorn Pimanmas and Phuwanat Pornpongsaroj (2004). Peeling behaviour of reinforced concrete beams strengthened with CFRP plates under various end restraint conditions, Magazine of Concrete Research, Vol. 56, No. 2, pp. 73-81.
  24. Amorn Pimanmas and Koichi Maekawa (2003). Shear failure of reinforced concrete members subjected to pre-cracking coupled with combined axial tension and shear, Concrete Library International, No. 41, pp. 17-33. (Reprinted from Proceedings of JSCE, November 2001, Vol. 53, No. 690)
  25. Chayanon Hansapinyo, Amorn Pimanmas, Maekawa, Koichi, and Taweep Chaisomphob. (2003). Proposed model of shear deformation of reinforced concrete beam after diagonal cracking, Journal of Materials, Concrete Structures and Pavements, JSCE, Vol. 58, No. 725, pp. 305-319.
  26. Amorn Pimanmas and Koichi Maekawa (2001). Behavior and finite element analysis of pre-cracked reinforced concrete in shear, Magazine of Concrete Research, Vol. 53, No. 4, pp. 263-282.
  27. Amorn Pimanmas and Koichi Maekawa (2001). Influence of pre-cracking on reinforced concrete behavior in shear,Concrete Library of JSCE No. 38, December, pp. 207-223.
  28. Amorn Pimanmas and Koichi Maekawa (2001). Influence of pre-crack on RC behavior in shear, J. Material. Conc. Struct., Pavements, JSCE, Vol. 50, No. 669, pp. 227-291.
  29. Amorn Pimanmas and Koichi Maekawa (2001). Multi-directional fixed crack approach for highly anisotropic shear behavior in pre-cracked RC members, J. Material. Conc. Struct., Pavements, JSCE, Vol. 50, No. 669, pp. 293-307.
  30. Amorn Pimanmas and Koichi Maekawa (2001). Control of crack localization and formation of failure path in RC members containing artificial crack device, J. Material. Conc. Struct., Pavements, JSCE, Vol. 52, No. 683, pp. 157-171.
  31. Amorn Pimanmas and Koichi Maekawa (2001). Numerical simulation of failure path formation and crack sequence in RC with full and local shear anisotropy, J. of Material. Conc . Struct., Pavements, JSCE, Vol. 52, No. 683, pp. 173-186.
  32. Amorn Pimanmas and Koichi Maekawa (2001). Shear failure of RC members subjected to generic loading paths and coupled axial tension and shear, J. Material. Conc. Struct., Pavements, JSCE, Vol. 53, No. 690, pp. 159-174.
National Journals
  1. Saleem, Shahzad; Amorn Pimanmas; and Tahir Mehmood (2015). Finite element modeling of non-ductile reinforced concrete columns, Research and Development Journal, Vol. 26, No. 1, January-March 2015, pp. 23-34.
  2. Lam, Lalin; Qudeer Hussain; and Amorn Pimanmas (2014). Shear strengthening of RC deep beams using glass chopped strand mat (GCSM), Research and Development Journal, Vol. 25, No. 4, October-December 2014, pp. 25-33.
  3. Preeda Chaimahawan and Amorn Pimanmas (2013). Application of nonlinear link in strut and tie model for joint planar expansion, Research and Development Journal of the Engineering Institute of Thailand, No. 24, Vol. 4, October-December 2013, pp. 1-11.
  4. Panuwat Joyklad and Amorn Pimanmas (2013). Seismic behavior of lightly reinforced concrete beam-column joints at first floor, Kasem Bundit Engineering Journal (KBEJ), Vol. 3, No. 2, July-December 2013, pp. 1-25.
  5. Ratkriangkrai Paoleng and Amorn Pimanmas (2012). Experimental study of ferrocement for strengthening short lap splice of RC members, Research and Development Journal of The Engineering Institute of Thailand, Vol. 23, No. 3, 2012, pp. 1-8.
  6. Panuwat Joyklad and Amorn Pimanmas (2012). Seismic behavior of substandard RC beam-column joints dominated by cantilever action, Kasem Bundit Engineering Journal, Vol. 2, No. 1, January – June 2012, pp. 51-76.
  7. Pragasit Jantanalikit, Panuwat Joyklad, and Amorn Pimanmas (2010). Experimental investigation of reinforced concrete beams strengthened by skeleton steel and ferrocement cover, Research and Development Journal of The Engineering Institute of Thailand, Vol. 21, No. 1, pp. 17-26.
  8. Dam Xuan Thai and Amorn Pimanmas (2010). Strength prediction of lap splice confined with fiber reinforced polymer (FRP), Suranaree Journal of Science and Technology, Vol. 17, No.1, pp. 13-25.
  9. Preeda Chaimahawan and Amorn Pimanmas (2009). Effect of connection reinforcement details on performance of full-scale precast concrete beam-column connection designed for gravity, Research and Development Journal of the Engineering Institute of Thailand, Vol. 20, No. 3, pp. 50-58.
  10. Dam Xuan Thai and Amorn Pimanmas (2009). Modeling of RC column with lap splices strengthened by fiber reinforced polymer (FRP), Research and Development Journal of the Engineering Institute of Thailand, Vol. 20, No. 4, pp. 22-34.
  11. Amorn Pimanmas (2007). Behavior and failure mode of reinforced concrete members damaged by pre-cracking,Songklanakarin Journal of Science and Technology, Vol. 29, No. 4, July-August 2007, pp. 1039-1048.
  12. Amorn Pimanmas (2007). The effect of long-term creep and prestressing on moment redistribution of balanced cantilever cast-in-place segmental bridge, Songklanakarin Journal of Science and Technology, Vol. 29, No. 1, January-February 2007, pp. 205-216.
  13. Panuwat Joyklad, Preeda Chaimahawan, and Amorn Pimanmas (2007). Assessment of seismic deficiency of existing reinforced concrete buildings in Bangkok, Research and Development Journal of the Engineering Institute of Thailand, Vol. 18, No. 3, 2007, pp. 19.28.
  14. Preeda Chaimahawan and Amorn Pimanmas (2007). Simple seismic evaluation methodology for gravity-designed reinforced concrete building, Research and Development Journal of the Engineering Institute of Thailand, Vol. 18, No. 1, 2007, pp. 35-45.
  15. Teeraphot Supaviriyakit and Amorn Pimanmas (2007). Comparative performance of a substandard beam-column joint with and without initial bond between beam bars and concrete in the joint core, Thammasat International Journal of Science and Technology, Vol. 12, No. 1, January-March 2007, pp. 42-51.
  16. Teeraphot Supaviriyakit, Phuwanat Pornpongsaroj, and Amorn Pimanmas (2004). Finite element analysis of FRP-strengthened RC beams, Songklanakarin Journal of Science and Technology, Vol. 26, No. 4, July-August 2004, pp. 497-507.
International Conferences
  1. Atipphat Suwattanakorn; Qudeer Hussain; Winyu Rattanapitikon; and Amorn Pimanmas (2016). Behavior of rectangular concrete column confined with sisal fiber reinforced polymers (Sisal FRP). In Proceedings of the 2016 International Conference on Composite Materials and Material Engineering (ICCMME2016), 9-11 March 2016, Bangkok, Thailand, Paper No. 33-ICCMME2016-346E, 4 p.
  2. Arissaman Sangthongtong; Qudeer Hussain; and Amorn Pimanmas (2016). Compressive behavior of concrete confined by hemp fiber composite jackets. In Proceedings of the 2016 International Conference on Composite Materials and Material Engineering (ICCMME2016), 9-11 March 2016, Bangkok, Thailand, Paper No. 39-ICCMME2016-351E, 4 p.
  3. Yinh, Seyha; Qudeer Hussain; Winyu Rattanapitikon; and Amorn Pimanmas (2016). Flexural behavior of reinforced-concrete (RC) beams strengthened with hemp fiber-reinforced polymer (FRP) composites. In Proceedings of the 2016 International Conference on Composite Materials and Material Engineering (ICCMME2016), 9-11 March 2016, Bangkok, Thailand, Paper No. 34-ICCMME2016-347E, 4 p.
  4. Khan, Arslan Qayyum; Qudeer Hussain; Winyu Rattanapitikon; and Amorn Pimanmas (2016). Flexural strengthening of RC beams with sisal fiber composites and sisal fiber rods. In Proceedings of the 2016 International Conference on Composite Materials and Material Engineering (ICCMME2016), 9-11 March 2016, Bangkok, Thailand, Paper No. 36-ICCMME2016-348E, 4 p.
  5. Sanyawit Siriluk; Qudeer Hussin; Winyu Rattanapitikorn; and Amorn Pimanmas (2016). Shear strengthening of reinforced concrete beams with HFRP composite. In Proceedings of the 2016 International Conference on Composite Materials and Material Engineering (ICCMME2016), 9-11 March 2016, Bangkok, Thailand, Paper No. 37-ICCMME2016-349E, 4 p.
  6. Khan, Arslan Qayyum; Qudeer Hussain; Winyu Rattanapitikon; and Amorn Pimanmas (2015). Strengthening of reinforced concrete beams with SFRP composites. In Proceedings of the 9th Asia Pacific Structural Engineering and Construction Conference (APSEC 2015) and 8th Asean Civil Engineering Conference (ACEC 2015) [CD-ROM], 3-5 November 2015, Kuala Lumpur, Malaysia, 6 p.
  7. Arissaman Sangthongtong, Qudeer Hussain and Amorn Pimanmas (2015). Behavior of square and rectangular concrete columns strengthened with hemp fiber. In Proceedings of the 9th Asia Pacific Structural Engineering and Construction Conference (APSEC 2015) and 8th Asean Civil Engineering Conference (ACEC 2015) [CD-ROM], 3-5 November 2015, Kuala Lumpur, Malaysia, 6 p.
  8. Atipphat Panyasirikhunawut; Qudeer Hussain; Winyu Rattanapitikon; and Amorn Pimanmas (2015). Axial behavior of concrete externally confined with sisal FRP. In Proceedings of the 9th Asia Pacific Structural Engineering and Construction Conference (APSEC 2015) and 8th Asean Civil Engineering Conference (ACEC 2015) [CD-ROM], 3-5 November 2015, Kuala Lumpur, Malaysia, 6 p.
  9. Lam, Lalin; Qudeer Hussain; and Amorn Pimanmas (2015). De-bonding of chopped glass strand mat (CGSM) composites in shear. In Proceedings of the 9th Asia Pacific Structural Engineering and Construction Conference (APSEC 2015) and 8th Asean Civil Engineering Conference (ACEC 2015) [CD-ROM], 3-5 November 2015, Kuala Lumpur, Malaysia, 6 p.
  10. Hussain, Qudeer and Amorn Pimanmas (2015). Contribution of externally bonded sprayed FRP to shear capacity of RC deep beams. In Proceedings of the 9th Asia Pacific Structural Engineering and Construction Conference (APSEC 2015) and 8th Asean Civil Engineering Conference (ACEC 2015) [CD-ROM], 3-5 November 2015, Kuala Lumpur, Malaysia, 6 p.
  11. Yinh, Seyha; Qudeer Hussain; Winyu Rattanapitikon; and Amorn Pimanmas (2015). Strengthening of concrete beams using sisal FRP. In Proceedings of the 9th Asia Pacific Structural Engineering and Construction Conference (APSEC 2015) and 8th Asean Civil Engineering Conference (ACEC 2015) [CD-ROM], 3-5 November 2015, Kuala Lumpur, Malaysia, 6 p.
  12. Lam, Lalin; Qudeer Hussain; Panuwat Joyklad; and Amorn Pimanmas (2015). Behavior of RC deep beams strengthened in shear using glass fiber reinforced polymer with mechanical anchors. In Proceedings of 2015 International Conference on Environment and Civil Engineering (ICEACE’2015), 24-25 April 2015, Chon Buri, Thailand, pp. 83-88.
  13. Hussain, Qudeer; Lam Lalin; and Amorn Pimanmas (2014). Strength and ductility of SGFRP confined concrete. InProceedings of SETCOR International Conference on Smart Materials and Surfaces (SMS Bangkok 2014), 26-28 August 2014, Bangkok, Thailand, 4 p.
  14. Ratkriangkrai Paoleng and Amorn Pimanmas (2011). An experimental study on strengthening lap splice by ferrocement jacket. In Proceedings of the 10th International Symposium on New Technologies for Urban Safety of Mega Cities in Asia (USMCA 2011) [CD-ROM], 12-14 October 2011, Chiang Mai, Thailand, 9 p.
  15. Amorn Pimanmas and Preeda Chaimahawan (2011). Cyclic shear resistance of expanded beam-column joint. In the Twelfth East Asia-Pacific Conference on Structural Engineering and Construction (EASEC-12), 26-28 January 2011, Hong Kong, China.
  16. Preeda Chaimahawan and Amorn Pimanmas (2010). The analysis of beam-column joint retrofitted by in-situ joint enlargement. In Proceedings of the third Asian Conference on Earthquake Engineering, 1-3 December 2010, Bangkok, Thailand.
  17. Thai Xuan Dam and Amorn Pimanmas (2009). Nonlinear analysis of RC column with short lap splice length strengthened by FRP jacketing. In Proceedings of the 6th Asian Symposium on Polymers in Concrete, 29-30 October 2009, Shanghai, China. pp. 373-380.
  18. Pragsit Juntanalikit; Panuwat Joyklad; and Amorn Pimanmas (2009). Shear strengthening of reinforced concrete beams using ferrocement. In Proceedings of the 8th International Symposium on New Technologies for Urban Safety of Mega Cities in Asia (USMCA 2009) , 15-16 October 2009, Incheon, Korea. pp. 301-312.
  19. Pragsit Juntanalikit and Amorn Pimanmas (2009). Nonlinear analysis of shear strengthening of reinforce concrete columns by using fiber reinforce polymer. In Proceedings of the 8th International Symposium on New Technologies for Urban Safety of Mega Cities in Asia (USMCA 2009) , 15-16 October 2009, Incheon, Korea. pp. 131-142.
  20. Amorn Pimanmas and Panuwat Joyklad (2009). Effects of debonding on behaviors of substandard bridge piers. InProceedings of the Sixth Regional Symposium on Infrastructure Development (RSID6) [CD-ROM], 12-13 January 2009, Bangkok, Thailand. Paper No. STR22, 6 p.
  21. Panuwat Joyklad and Amorn Pimanmas (2009). Assessment of seismic performance of existing bridge piers in Bangkok. In Proceedings of the Sixth Regional Symposium on Infrastructure Development (RSID6) [CD-ROM], 12-13 January 2009, Bangkok, Thailand. Paper No. STR23, 6 p.
  22. Preeda Chaimahawan and Amorn Pimanmas (2009). Nonlinear FEM analysis of RC beam-column joint upgraded by planar joint expansion. In Proceedings of the Sixth Regional Symposium on Infrastructure Development (RSID6) [CD-ROM], 12-13 January 2009, Bangkok, Thailand. Paper No. STR24, 6 p.
  23. Amorn Pimanmas and Preeda Chaimahawan (2008). Relocation of plastic hinge of substandard beam-column joint by joint planar expansion. In Proceedings of the Eleventh East Asia-Pacific Conference on Structural Engineering & Construction (EASEC-11) “Building a Sustainable Environment” [CD-ROM], 19-21 November 2008, Taipei, Taiwan. 6 p.
  24. Panuwat Joyklad and Amorn Pimanmas (2008). The seismic behavior of reinforced concrete bridge pier with debonded reinforcements and interface dowels. In Proceedings of the Eleventh East Asia-Pacific Conference on Structural Engineering & Construction (EASEC-11) “Building a Sustainable Environment” [CD-ROM], 19-21 November 2008, Taipei, Taiwan. 6 p.
  25. Amorn Pimanmas and Preeda Chaimahawan (2006). Seismic evaluation methodology for gravity-designed reinforced building. In Proceedings of the Fifth International Symposium on New Technologies for Urban Safety of Mega Cities in Asia (USMCA 2006) [CD-ROM], 16-17 November 2006, Phuket, Thailand. pp. 449-459.
  26. Preeda Chaimahawan and Amorn Pimanmas (2006). Seismic vulnerability of existing reinforced concrete building in Bangkok, Thailand. In Proceedings of the Fifth International Symposium on New Technologies for Urban Safety of Mega Cities in Asia (USMCA 2006) [CD-ROM], 16-17 November 2006, Phuket, Thailand. pp. 545-555.
  27. Preeda Chaimahawan; Teeraphot Supaviriyakit; and Amorn Pimanmas (2006). Behavior of full-scale precast concrete beam-column connection under cyclic load. In Proceedings of the Tenth East Asia-Pacific Conference on Structural Engineering & Construction (EASEC-10) [CD- ROM], 3-5 August 2006, Bangkok, Thailand. Vol. 2, pp. 85-90.
  28. Teeraphot Supaviriyakit; Amorn Pimanmas; and Pennung Warnitchai (2006). Effect of removing initial bond between beam bar and concrete on cyclic response of non-ductile beam-column joint. In Proceedings of the Tenth East Asia-Pacific Conference on Structural Engineering & Construction (EASEC-10) [CD-ROM], 3-5 August 2006, Bangkok, Thailand. Vol. 3, pp. 85-90.
  29. Amorn Pimanmas and Knut H. Nielsen (2005). The effect of long-term creep on moment redistribution of Pathum Thani bridge crossing the Chao- Praya river. In Proceedings of the Fourth International Conference on Current and Future Trends in Bridge Design, Construction and Maintenance, 10-11 October 2005, Kuala Lumpur, Malaysia. pp. 283-292.
  30. Amorn Pimanmas and Jiraphong Tisavipat (2004). Shear strength degradation of reinforced concrete deep beam due to pre-cracking. In Proceedings of the 1st International Conference on Asian Concrete Federation, 28-29 October 2004, Chiang Mai, Thailand. 8 p.
  31. Pennung Warnitchai; Sommai Pongpornsup; Unnop Prawatwong; and Amorn Pimanmas (2004). Seismic performance of post-tensioned interior flat slab-column connections. In Proceedings of the Third International Symposium on New Technologies for Urban Safety of Mega Cities in Asia, 18-19 October 2004, Agra, India. pp. 147-156.
  32. Amorn Pimanmas; Pennung Warnitchai; and Sommai Pongpornsup (2004). Seismic performance of 3/5 scaled post-tensioned interior flat slab- column connections. In Proceedings of Asia Conference on Earthquake Engineering (ACCE2004), 5-6 March 2004, Manila, Phillipines. 8 p.
  33. Pennung Warnitchai; Amorn Pimanmas; and Do Tien Thinth (2004). Seismic performance of RC sub-assemblages with non-seismic reinforcement details. In Proceedings of Asia Conference on Earthquake Engineering (ACCE2004), 5-6 March 2004, Manila, Phillipines. 8 p.
  34. Amorn Pimanmas, Phuwanat Pornpongsaroj, and Theeraphot Supaviriyakit (2003). Strengthening of opening in reinforced concrete beam by surface-mounted FRP rod. In Proceedings of the Ninth East Asia-Pacific Conference on Structural Engineering and Construction, 16-18 December 2003, Bali, Indonesia, 6 p.
  35. Phuwanat Pornpongsaroj and Amorn Pimanmas (2003). Effect of end wrapping on peeling behavior of FRP-strengthened beams. In Proceedings of the Sixth International Symposium on Fibre-Reinforced Polymer Reinforcement for Concrete Structures (FRPRCS-6), 8-10 July 2003, Singapore, Vol. 1, pp. 277-286.
  36. Phuwanat Pornpongsaroj and Amorn Pimanmas (2003). End wrapping method for preventing peeling failure of FRP-strengthened beams. In Proceedings of the Forth Regional Symposium on Infrastructure Development in Civil Engineering (RSID-4), 3-5 April 2003, Thailand, pp. 91- 96.
  37. Jirapong Tisavipat, Amorn Pimanmas, and Phuwanat Pornpongsaroj (2002). Effect of pre-cracking on change of failure mode of reinforced concrete beams, Proceedings of the 2nd International Symposium, Asian Concrete Forum, Seoul, November 2002.
  38. Amorn Pimanmas, Koichi Maekawa, and N. Fukuura (2002). Crack propagation control with pre-existing slits and cracks in concrete, Proceeding of the 1st Fib Concrete 2002, Ozaka, Japan, 13-19 October.
  39. Amorn Pimanmas and Koichi Maekawa (2001). Shear failure of pre-cracked reinforced concrete beam, Proceedings of the 7th East Asia-Pacific Conference on Structural Engineering and Construction, Singapore.
  40. Chayanon Hansapinyo, Taweep Chaisomphob, Koichi Maekawa, and Amorn Pimanmas (2001). Experimental investigation on rectangular reinforced concrete beam subjected to bi-axial shear, Proceedings of the 8th East Asia-Pacific Conference on Structural Engineering and Construction, Singapore, 5-7 December.
  41. Amorn Pimanmas and Koichi Maekawa (2000). Shear behavior of RC beams containing vertical penetrating pre-cracks, Proceeding of 55th Annual Conf., JSCE.
  42. Amorn Pimanmas and Kazumasa Ozawa (1996). Mathematical modeling of shear constitutive relationship for flowing fresh concrete, Int. Conf. on Urban Eng. in Asian Cities in the 21st Century, AIT.
  43. Amorn Pimanmas and Kazumasa Ozawa (1996). Modeling of the mechanism of shear stress generation due to coarse aggregate interaction in fresh concrete, 51st Annual Conf., JSCE.
  44. Amorn Pimanmas and Kazumasa Ozawa (1996). A microscopic model to predict viscosity of concentrated suspension,Proc. of JCI Symposium on Consistency and Workability of Fresh Concrete, JCI.
Invited Presentation, Seminar Proceedings and Local Publications
  1. Sanyawit Siriluk; Qudeer Hussain; Winyu Rattanapitikon; and Amorn Pimanmas (2015). Shear strengthening of RC deep beams using hemp fibers. In Proceedings of the AUN/SEED-NET Regional Conference 2015 on Materials Engineering (RCME 2015), 29-30 October 2015, Bangkok, Thailand, Article No. RCME 3C-3, 2 p.
  2. Hussain, Qudeer and Amorn Pimanmas (2015). Seismic strengthening of concrete structures in Thailand. In Proceedings of the AUN/SEED-NET Regional Conference 2015 on Materials Engineering (RCME 2015), 29-30 October 2015, Bangkok, Thailand, Article No. RCME 3C-2, 2 p.
  3. Yinh, Seyha; Qudeer Hussain; Winyu Rattanapitikon; and Amorn Pimanmas (2015). Use of externally polyester-bonded sisal fiber reinforced polymer composites in strengthening of concrete members. In Proceedings of the AUN/SEED-NET Regional Conference 2015 on Materials Engineering (RCME 2015), 29-30 October 2015, Bangkok, Thailand, Article No. RCME 2A-4, 2 p.
  4. Khan, Arslan Qayyum; Qudeer Hussain; Winyu Rattanapitikon; and Amorn Pimanmas (2015). Use of sisal FRP for flexural strengthening of RC beams. In Proceedings of the AUN/SEED-NET Regional Conference 2015 on Materials Engineering (RCME 2015), 29-30 October 2015, Bangkok, Thailand, Article No. RCME 2A-3, 2 p.
  5. Atipphat Panyasirikhunawut; Qudeer Hussain; Winyu Rattanapitikon; and Amorn Pimanmas (2015). Sisal fiber reinforced polymer (Sisal FRP) as an external confinement. In Proceedings of the AUN/SEED-NET Regional Conference 2015 on Materials Engineering (RCME 2015), 29-30 October 2015, Bangkok, Thailand, Article No. RCME 2A-2, 2 p.
  6. Arissaman Sangthongtong; Qudeer Hussain; and Amorn Pimanmas (2015). Behavior of concrete columns confined by hemp fiber reinforced polymer (HFRP). In Proceedings of the AUN/SEED-NET Regional Conference 2015 on Materials Engineering (RCME 2015), 29-30 October 2015, Bangkok, Thailand, Article No. RCME 1B-4, 2 p.
  7. Lam, Lalin; Qudeer Hussain; and Amorn Pimanmas (2015). Externally bonded glass chopped strand mat fiber composites for shear strengthening of reinforced concrete deep beams. In Proceedings of the AUN/SEED-NET Regional Conference 2015 on Materials Engineering (RCME 2015), 29-30 October 2015, Bangkok, Thailand, Article No. RCME 1B-3, 2 p.
  8. Amorn Pimanmas and Preeda Chaimahawan (2012). Application of Strut-and-Tie model to beam-column joint strengthening by planar joint expansion method. In Proceedings of the 17th National Convention on Civil Engineering[CD-ROM], 9-11 May 2012, Udon Thani, Thailand, 19 p. (in Thai)
  9. Panuwat Joyklad; Pragasit Jantanalikit; and Amorn Pimanmas (2009). Shear strengthening of RC beams using web steel and ferrocement cover. In Proceedings of Annual Concrete Conference 5, 20-22 October 2009, Nakhon Ratchasima, Thailand. pp. STR-41 to STR-46.
  10. Amorn Pimanmas and Preeda Chaimahawan (2008). Seismic retrofit of substandard beam-column joint by joint planar expansion. In Proceedings of the 13th National Conference on Civil Engineering (NCCE13) [CD-ROM], 14-16 May 2008, Pattaya, Thailand. Paper No. STR-044, pp. 235-240. (in Thai)
  11. Preeda Chaimahawan and Amorn Pimanmas (2008). Seismic retrofit beam-column joint by steel bracket joint planar expansion. In Proceedings of the 13th National Conference on Civil Engineering (NCCE13) [CD-ROM], 14-16 May 2008, Pattaya, Thailand. Paper No. STR-045, pp. 241-246. (in Thai)
  12. Amorn Pimanmas and Panuwat Joyklad (2008). Design concepts for evacuation shelter in tsunami hazard areas. InProceedings of the 13th National Conference on Civil Engineering (NCCE13) [CD-ROM], 14-16 May 2008, Pattaya, Thailand. Paper No. STR-059, pp. 301-306. (in Thai)
  13. Panuwat Joyklad and Amorn Pimanmas (2008). Structural evaluation and strengthening of existing buildings in tsunami hazard areas. In Proceedings of the 13th National Conference on Civil Engineering (NCCE13) [CD-ROM], 14-16 May 2008, Pattaya, Thailand. Paper No. STR- 060, pp. 307-312. (in Thai)
  14. Panuwat Joyklad and Amorn Pimanmas (2008). The seismic behavior of reinforced concrete bridge pier with debonded reinforcements. In Proceedings of the 13th National Conference on Civil Engineering (NCCE13) [CD-ROM], 14-16 May 2008, Pattaya, Thailand. Paper No. STR- 066, pp. 326-331. (in Thai)
  15. Amorn Pimanmas and Knut Nielsen (2007). Experience in monorail structural design in the palm Jumeriah project. InProceedings of the 12th National Convention on Civil Engineering (NCCE12) [CD-ROM], 2-4 May 2007, Pisanulok, Thailand. Vol. 7 (STR), pp. 259-264. (in Thai)
  16. Amorn Pimanmas and Panuwat Joyklad (2007). Measures for tsunami evacuation shelters in Phuket and Pang-Nga. InProceedings of the 12th National Convention on Civil Engineering (NCCE12) [CD-ROM], 2-4 May 2007, Pisanulok, Thailand. Vol. 7 (STR), pp. 319-324. (in Thai)
  17. Amorn Pimanmas and Teeraphot Supaviriyakit (2007). Nonlinear fem analysis of non-seismically detailed interior RC beam-column connection under horizontal cyclic load. In Proceedings of the 12th National Convention on Civil Engineering (NCCE12) [CD-ROM], 2-4 May 2007, Pisanulok, Thailand. Vol. 7 (STR), pp. 331-337. (in Thai)
  18. Panuwat Joyklad and Amorn Pimanmas (2007). Design guidelines for evacuation shelter in tsunami hazard area. InProceedings of the 12th National Convention on Civil Engineering (NCCE12) [CD-ROM], 2-4 May 2007, Pisanulok, Thailand. Vol. 7 (STR), pp. 222-226. (in Thai)
  19. Preeda Chaimahawan and Amorn Pimanmas (2007). Simple seismic evaluation methodology for gravity-designed reinforced building. In Proceedings of the 12th National Convention on Civil Engineering (NCCE12) [CD-ROM], 2-4 May 2007, Pisanulok, Thailand. Vol. 7 (STR), pp. 247-252. (in Thai)
  20. Preeda Chaimahawan and Amorn Pimanmas (2007). Vulnerability of existing reinforced concrete building in Bangkok against seismic hazard. In Proceedings of the 12th National Convention on Civil Engineering (NCCE12) [CD-ROM], 2-4 May 2007, Pisanulok, Thailand. Vol. 7 (STR), pp. 253-258. (in Thai)
  21. Teeraphot Supaviriyakit and Amorn Pimanmas (2007). Reversed cyclic behavior of RC beam-column joint designed according to ACI building code. In Proceedings of the 12th National Convention on Civil Engineering (NCCE12) [CD-ROM], 2-4 May 2007, Pisanulok, Thailand. Vol. 7 (STR), pp. 313-318. (in Thai)
  22. Amorn Pimanmas; Phuwanat Pornponsaroj; and Teeraphot Supaviriyakit (2005). Finite element analysis of FRP-strengthened RC beams. In Proceedings of the First Annual Concrete Conference, 25-27 October 2005, Rayong, Thailand. pp. STR19 to STR26.
  23. Jiraphong Tisavipat and Amorn Pimanmas (2005). Shear strength degradation of RC deep beam due to pre-cracking. In Proceedings of the Tenth National Convention on Civil Engineering, Engineering Institute of Thailand, 2-4 May 2005, Pattaya, Thailand. pp. STR179 to STR185. (in Thai)
  24. Teeraphot Supaviriyakit; Amorn Pimanmas: and Pennung Warnitchai (2005). Effect of removing bond between reinforcement and concrete of beam -column joint under cyclic loads. In Proceedings of the Tenth National Convention on Civil Engineering, Engineering Institute of Thailand, 2-4 May 2005, Pattaya, Thailand. pp. STR186 to STR191. (in Thai)
  25. Amorn Pimanmas; Pennung Warnitchai; and Do Tien Thinth (2004). Reversed cyclic behavior of sub-standard RC beam-column joint. In Proceedings of the 2nd National Concrete Conference, 26-27 October 2004, Chiang Mai, Thailand. (in Thai)
  26. Phuwanat Pornpongsaroj and Amorn Pimanmas (2004). Finite element analysis of opening beam strengthened by FRP rod. In Proceedings of the 9thNational Convention on Civil Engineering, Engineering Institute of Thailand, 19-21 May 2004, Petchaburi, Thailand. (in Thai)
  27. Theeraphot Supaviriyakit and Amorn Pimanmas (2004). The moment redistribution in continuous RC beam by nonlinear finite element method based on fiber model. In Proceedings of the 9th National Convention on Civil Engineering, Engineering Institute of Thailand, 19-21 May 2004, Petchaburi, Thailand. (in Thai)
  28. Jiraphong Tisavipat and Amorn Pimanmas (2003). Effect of pre-cracking on shear capacity of beam with large amount of stirrups. In Proceedings of the First National Concrete Conference, 14-16 May 2003, Kanjanaburi, Thailand, pp. 155-163. (In Thai)
  29. Phuwanat Pornpongsaroj and Amorn Pimanmas (2003). End wrapping method to prevent peeling failure of FRP-strengthened beams. In Proceedings of the First National Concrete Conference, 14-16 May 2003, Kanjanaburi, Thailand, pp. 137-142. (In Thai)
  30. Phuwanat Pornpongsaroj and Amorn Pimanmas (2003). Nonlinear finite element analysis of FRP-strengthened RC beams. In Proceedings of the First National Concrete Conference, 14-16 May 2003, Kanjanaburi, Thailand, pp. 149-154. (In Thai)
  31. Phuwanat Pornpongsaroj and Amorn Pimanmas (2003). Peeling behavior of FRP-strengthened RC beam. InProceedings of the First National Concrete Conference, 14-16 May 2003, Kanjanaburi, Thailand, pp. 143-148. (In Thai)
  32. Amorn Pimanmas and Koichi Maekawa, “Behavior of pre-cracked reinforced concrete members”, Proceedings of the 8th National Civil Engineering Convention, Konkaen, Thailand, (in Thai).
  33. Phuwanat Pornpongsaroj and Amorn Pimanmas, “Change of failure mode of RC beam damaged by pre-loading”,Proceedings of the 8th National Civil Engineering Convention, Konkaen, Thailand, (in Thai).
  34. Amorn Pimanmas, “Strength evaluation of existing concrete structures according to ACI437R-91”, Proceedings of the Seminar “Non-Destructive Testing in Civil Engineering and Structural Inspection”, Engineering Institute of Thailand, Bangkok, Thailand, November 2002 (In Thai).
  35. Amorn Pimanmas, “Behavior and design of torsion and combined shear and torsion in reinforced concrete member”,Proceedings of the Seminar -Workshop “Design of Reinforced Concrete by Ultimate Strength Method”, Engineering Institute of Thailand, Bangkok, Thailand, November 2002 (In Thai).
  36. Amorn Pimanmas, “Behavior and design of shear in reinforced concrete member”, Proceedings of the Seminar-Workshop “Design of Reinforced Concrete by Ultimate Strength Method”, Engineering Institute of Thailand, Bangkok, Thailand, May 2002 (In Thai).
  37. Amorn Pimanmas, “Behavior and failure of anchorage in structural connection”, Proceedings of the Seminar “Design of Structural Steel-Concrete Connection”, Engineering Institute of Thailand, Bangkok, Thailand, March 2002 (In Thai).
  38. Special Lecture “Nonlinear finite element analysis of reinforced concrete structures”, Chulalongkorn university, Bangkok, Thailand, Jan. 2002.
  39. Amorn Pimanmas, “Behavior and failure of reinforced concrete members strengthened by fiber reinforced composites”, Proceedings of the Seminar “Strengthening of Concrete Structures by Fiber Reinforced Composite Materials”, Engineering Institute of Thailand, Bangkok, Thailand, December 2001 (In Thai).
  40. Amorn Pimanmas, “Behavior and design of deep reinforced concrete beams”, Proceedings of the Seminar-Workshop “Design of Reinforced Concrete by Ultimate Strength Method”, Engineering Institute of Thailand, Bangkok, Thailand, November 2001, 2002 (In Thai).
  41. Amorn Pimanmas, “Analysis of indeterminate beam and frame”, Proceedings of the Seminar-Workshop “Design of Reinforced Concrete by Ultimate Strength Method”, Engineering Institute of Thailand, Bangkok, Thailand, November 2001 (In Thai).
  42. Amorn Pimanmas, “Finite element analysis of reinforced concrete”, Proceedings of the Seminar “Finite Element Analysis for Concrete Structures”, Engineering Institute of Thailand, Bangkok, Thailand, August 2001 (In Thai).
  43. Amorn Pimanmas and Koichi Maekawa. “Shear behavior of pre-cracked reinforced concrete beam”, Proceedings of the Joint Meeting between University of Tokyo and Seoul National University, Tokyo, Japan.
  44. Special Lecture “Non-Orthogonal crack interaction and response of pre-cracked concrete in shear”, Kochi University of Technology, Kochi, Japan, September 2000.