Experimental investigation on self-curing concrete with sodium lignosulphate by partial replacement of cement with flyash

Abstract

Concrete is a crucial and costly material in building construction. For good performance and durability of concrete, curing is essential. Huge quantities of water are needed for the curing of concrete. The self-curing technique can overcome this problem. Water is retained within self-curing concrete, allowing it to cure without additional moisture. In this study, we will utilize Sodium Ligno sulphate as a self-curing agent, and due to the tremendous demand for cement, its cost is increasing daily. Therefore, cement is partially replaced by fly ash (a waste product) to reduce costs. Self-Curing concrete using Sodium Ligno-sulphate is a substitute method for improving concrete's mechanical and physical properties. At 7, 14, and 28 days, tests for compressive, flexural, and split tensile strength are performed. The amount of fly ash used as a partial cement replacement ranges from 0% to 30%. This study aims to determine the optimal mix proportion for improved strength characteristics of concrete (M40) by fixing the Fly ash percentage at 20% and varying the Sodium Ligno sulphate percentage at 0%, 1%, and 2.5% by weight of cement.