Title:
Post-Peak Behavior of Cement-Based Materials in Compression
Author(s):
Alessandro P. Fantilli, Hirozo Mihashi, and Paolo Vallini
Publication:
Materials Journal
Volume:
104
Issue:
5
Appears on pages(s):
501-510
Keywords:
compression; fiber-reinforced concrete; moment-curvature; nonlinear analysis; simply-supported beams; strain.
DOI:
10.14359/18906
Date:
9/1/2007
Abstract:
It has been shown that the post-peak response of cement-based materials in compression can be defined by means of stressinelastic displacement relationships. A unique function, used to define these relationships for different cement-based materials, is introduced in the paper. The function is implemented in two numerical procedures able to compute moment-curvature relationships and predict the failure response of cement-based structures that fail via concrete crushing in compression. Simplysupported beams reinforced with steel bars and made, respectively, of ordinary concrete (RC), fiber-reinforced concrete (FRC), and high-performance fiber-reinforced cementitious concrete (HPFRCC) are analyzed. Referring to the load-midspan deflection curves of these beams, only if the proposed function is taken into account, a good agreement between numerical results and experimental data is obtained.