Robustness of hybrid fiber reinforced engineered cementitious composite containing stone processing waste

The present research is conducted to optimize and introduce the sustainable and cost-effective hybrid ECC mixtures. The availability, expensive nature, and high carbon footprints of standard ECC constituents: silica sand (SS) and polyvinyl alcohol fiber (PVA) restricted its wide application. The designed hybrid ECC were prepared with three different profiles of fibers: PVA, PET and MSE. This study also investigates the usability of stone processing waste (SPW) in ECC. To analyse the effect of SPW on the robustness of hybrid ECC, six different ECC mixtures were prepared having SPW up to 100% as a substitute for SS. To check the role of various constituents in designed matrices compressive response, tensile performance, flexural characteristics, air permeability, electrical resistivity, sorptivity, environmental, economic performance, effect of chemical immersion were firmly recorded. Evaluated viability of hybrid ECC mixes depicted that strength, durability, strain, and ecological parameters improved appreciably. Thus, it was revealed that the incorporation SPW improved the robustness behaviour of designed ECC mixes. Economic index of developed mixes revealed that the cost of hybrid ECC mixes lowered by 43.3% as compared to fully PVA and SS containing mixes. In addition, developed hybrid ECC mixes improved sustainability by reducing carbon footprints which is beneficial for eco-friendly environment.