Abstract
Engineered cementitious composites (ECC) are special type of cementitious composites tailored through an optimization process of their constituents with microfibers for specific applications. ECC sustain various slow loading rates while showing pseudo-strain hardening behavior that prevents accelerated failure of the structure with multiple cracks formation. The effect of individual constituents on the rheological behavior of ECC cementitious matrix and composite were investigated. Each constituent has its own individual effect on the rheological properties until it reaches its optimum content. The rheological behaviors of different combinations of all fine materials with and without class F fly ash were assessed. Plastic viscosity and yield stress were shown to have a significant effect on PVA fibers distribution and cementitious matrix stability.