Fiber-Bridging Constitutive Law of Engineered Cementitious Composites

• DOI: 10.3151/jact.6.181
• Publication Date: 2008-03-18T05:51:10Z
• Authors: En-Hua Yang; Shuxin Wang; Yingzi Yang; Victor C. Li
• Keywords: Spall; Tensile testing; Hardening (computing)

This paper is on modeling and measuring fiber-bridging constitutive law of Engineered Cementitious Composites (ECC), a high performance fiber-reinforced cementitious composite featuring tensile ductility. Fiber-bridging plays an important role in the multiple cracking behavior ECC. Therefore, proper control through tailoring material microstructure key to successfully designing strain-hardening In this paper, analytical model ECC which connects constituent parameters properties, built previous simplified version, was proposed. To improve accuracy crack opening prediction, new mechanisms fiber/matrix interactions, specifically fiber two-way debonding pull-out, matrix micro-spalling, Cook-Gordon effects were included. revised compared with experimental measurement validity confirmed. It expected that will greatly design technology terms steady-state width control, for structural long-term durability, properties safety at ultimate limit state.