Abstract
A new kind of multi-scale engineered cementitious composite (MS-ECC), which contains polyvinyl alcohol (PVA) fiber and calcium carbonate (CaCO3) whisker, was designed from the perspective of multi-scale structure and fracture process of cementitious material. 12 series of MS-ECC proportions was casted and the mechanical properties including compressive strength, uniaxial tension behavior, flexural behavior and microstructures of the mixtures were studied. The results indicates that the strength and ductility of MS-ECC was enhanced with proper addition of CaCO3 whisker. Moreover, it seems that the PVA fiber can be appropriately reduced due to the existence of CaCO3 whisker, which is beneficial in decreasing the production cost of fiberreinforced cementitious composites for large-scale construction projects.
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