Experimental Investigation on the Quasi-Static Tensile Capacity of Engineered Cementitious Composites Reinforced with Steel Grid and Fibers

摘要: An engineered cementitious composite (ECC) was reinforced with a steel grid and fibers to improve its tensile strength ductility. A series of tests have been carried out investigate the quasi-static capacity ECC. The capacities ECCs different numbers steel-grid layers, types (Polyvinyl alcohol (PVA) fiber, KEVLAR polyethylene (PE) fiber), volume fractions tested compared. It is indicated by test results that: (1) On whole, grid-PVA fiber grid-KEVLAR high considerable energy dissipation performance, while grid-PE ECC exhibits excellent (2) ultimate can be improved addition grids. maximal peak stress increase about 50–95% or 140–190% adding one layer two layers grid, respectively. (3) enhanced fraction. For certain kind fraction between 1.5% 2% grants best strength. Near loading point, strain hardening behavior, increases considerably. performance also remarkably such an in (4) ductility grids alone. mechanical model for initial grid-fiber proposed. validated data from tension experiments on