Publication: Use of high-performance fiber reinforced cement composites for increasing shear strength and displacement capacity in reinforced concrete flexural members
Issued Date
2006-12-01
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2-s2.0-84865859841
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Mahidol University
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SCOPUS
Bibliographic Citation
8th US National Conference on Earthquake Engineering 2006. Vol.7, (2006), 4045-4054
Suggested Citation
Gustavo J. Parra-Montesinos, Praveen Chompreda Use of high-performance fiber reinforced cement composites for increasing shear strength and displacement capacity in reinforced concrete flexural members. 8th US National Conference on Earthquake Engineering 2006. Vol.7, (2006), 4045-4054. Retrieved from: https://repository.li.mahidol.ac.th/handle/20.500.14594/23217
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Title
Use of high-performance fiber reinforced cement composites for increasing shear strength and displacement capacity in reinforced concrete flexural members
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Abstract
The use of high-performance fiber reinforced cement composites (HPFRCCs) to develop highly damage-tolerant flexural members under earthquake-induced displacements was investigated. HPFRCC materials exhibit a strain-hardening behavior in tension with strain capacities exceeding 0.5% and a compression behavior that resembles that of well-confined concrete. The results from the tests of five specimens under displacement reversals, featuring two cantilever flexural members each, are reported. One specimen was constructed with regular concrete and designed according to Chapter 21 of the 2002 ACI Building Code. The other four specimens were constructed with an HPFRCC material and contained no transverse reinforcement. The primary experimental variables were: 1) fiber type and volume fraction, and 2) average shear stress demand at flexural yielding. All HPFRCC members exhibited drift capacities of at least 4.0%. A shear stress level of 0.30√f'c [MPa] represented a lower bound for which no significant shearrelated damage occurred in the HPFRCC test specimens, regardless of the member inelastic rotation demand. Even though no transverse reinforcement was provided in the test specimens, buckling of longitudinal bars was not observed up to plastic hinge rotations of 4.0%. Copyright © (2006) by Earthquake Engineering Research Institute All rights reserved.