Experimental investigation on effect of copper slag in alccofine based self compacting concrete

Abstract

Self-compacting concrete (SCC) is widely used in the development of infrastructure due to various benefits such as high-speed construction, less man power, better surface finish and effortless placing. Aggregates perform significant character in enhancing the strength and workability of concrete. The global consumption of an enormous number of aggregates will cause exhaustion of instinctive resources. For suitable alternative materials, either by-product generated from industries or artificial source of aggregates can be utilized in the production of concrete. Copper slag is an industrial by-product. The Management and disposal of copper slag poses a major challenge for the environment. Because of the physical and chemical nature of copper slag, it can be efficiently used in manufacturing of concrete. For the generation of greener concrete, the content of cement in concrete need to be reduced. This can be done by using supplementary cementitious materials. The main aim of the project work is to investigate the properties of alccofine based self-compacting concrete with partial replacement fine aggregate by copper slag. The Alccofine replacement was carried out at different percentages of 5%, 10%, and 15%, and the optimal replacement percentage was determined. Once the optimal Alccofine replacement was established, the replacement of fine aggregate by copper slag was done at varying percentages ranging from 0% to 60% to determine the ideal combination. The compression and split tensile strength test were conducted to find the mechanical properties and slump flow test and J ring were conducted to find the fresh properties. According to the findings, the incorporation of copper slag as a partial replacement for fine aggregate in selfcompacting concrete resulted in improved workability and strength properties.