Influence of Aggregate type and size on ductility and mechanical properties of engineered Cementitious composites

This paper presents the results of an investigation on the influence of aggregate type and size on the mechanical and ductility properties of engineered cementitious composites (ECC). ECC is a micromechanically-based designed high-performance fiberreinforced cementitious composite with high ductility and improved durability due to tight crack width. Standard ECC mixtures are typically produced with microsilica sand (200 µm [0.008 in.] maximum aggregate size). In this study, ECC mixtures containing either crushed dolomitic limestone sand or gravel sand with maximum sizes of 1.19 or 2.38 mm (0.047 or 0.094 in.) were investigated.