Utilization of Industrial Wastes in Manufacture of Self Compacting Concrete and Examining Its Flexural Behaviour

Abstract

Recent studies indicate that marble processing industries and limestone quarries produce tons of waste in the form of powder which is found as a major concern for disposal. Considering significant high degree of fineness of these filler materials in contrast to cement, they may be employed for manufacture of Self Compacting Concrete (SCC). For the study, Self-Compacting Concrete is achieved by partially replacing Cement (70%) with filler materials like Limestone Powder (LP) and Marble Powder (MP) at different percentages by mass of cement and M-sand is used as fine aggregate as a complete replacement for river sand. The study focuses on determination of macro properties of concrete mixes and flexural behaviour of Self Compacting Concrete beams using the above materials. A total of 4 mixes were taken for the study namely Conventional mix, 15% lime powder(LP), 15% marble powder(MP) and 30%LPMP (15% LP and 15% MP). As per EFNARC conditions, following tests like Slump flow, V-funnel, L-Box tests were conducted to qualify the achieved concrete mix as SCC. At the age of 7 and 28 days respectively, strength aspects such as compressive strength, split tensile strength, and flexural strength tests of different proportioned mixes were determined. Flexural behaviour of casted SCC beams with and without filler materials was also examined and studied. Results proved that mix incorporated with lime powder and marble powder (30LPMP) reported the higher strength values than other mixes and exhibited better flexural behaviour.