ABSTRACT Waste recycling and reuse from the industries are effective way to maintain and enhance the sustainable environment. To investigate the optimal percentage of replacement of cement with industrial waste materials such as Alccofine and calcined clay and the addition of polypropylene fibre as an additive to concrete are the novelty of the present study. The use of polypropylene fibre in concrete is to improve its structural performance and sustainability. Polypropylene fibre was chosen for its excellent tensile strength, chemical resistance, low cost and cementitious material compatibility and also very good in decreasing cracks, enhancing durability. The study followed 15% and 30% replacement of Alccofine and calcined clay for cement and with 2% of fiber were added to enhance the mechanical and durability properties of M40. The study found that, 15% of replacement is optimal percentage of Alccofine and calcined to increase the mechanical properties such as 19.38% of compressive strength, 15.24% of bending strength and 14% of tensile strength. The microstructural studies confirmed that the increase in strength and durability of the concrete is due to the thinness of the Alccofine material and its ability to fill voids.
Murugan et al. (Wed,) studied this question.