Assessment of Lime Stone Dust as Replacement of Cement to Support Affordable Housing- A Step Towards Sustainability

1Assistant Professor in Department of civil Engineering, Jamia Millia Islamia, India 2HOD Department of Civil Engg, IFTM, India ----------------------------------------------------------------***-------------------------------------------------------------------Abstract: The major environmental impact of using concrete as a prime building material is the amount of CO2 emissions produced during the cement manufacturing process. In the recent decade fly ash was utilized as the substitute of cement in the manufacturing industry but due to closing down of thermal power plants the availability of fly ash is scarce. Thus limestone being in abundance can be considered as the replacement for cement. The main objective of this research study is to ascertain the use of limestone powder as a partial replacement of cement, to reduce the consumption of energy and CO2 emissions. In this study limestone of various ratios are used to replace a portion of Portland cement and efficiency of this replacement is noted. Studies suggest the predictable reduction in the structural properties of the concrete mainly due to dilution effect caused by partially replacing cement with limestone will also be checked during the course of this paper.