FACTORS AFFECTING MIX DESIGN OF CONCRETE

Abstract

Concrete is a low-maintenance composite material that is primarily composed of cementitious material, water and gravel. It is often used construction material not only in Bangladesh but also across the world. The design of the concrete mix is a critical determinant of the qualities of the concrete. The fundamental ideas and comparative research of certain prominent concrete mix design methods from a qualitative perspective are presented in this work. Two types of concrete mix designs are used which are ACI 211.1-91 (2002) Standard and British Standard (1997) in this paper. Several factors have been determined in this study to choose between the ACI and British Standard. These approaches rely heavily on graphs, tables and bar charts with arbitrary values. The nominal maximum size of coarse aggregate, water to cement ratio (w/c), slump value and the % passing of fine aggregates are used here to change the amount of materials. Differentiating between these strategies allows for a better understanding of the impacts of variables. The ACI and British Standard have been used to compare how the w/c, fine aggregate to cement ratio (FA/C), total aggregate to cement ratio (TA/C) and fine aggregate to total aggregate ratio (FA/TA) are different for various strengths. The following study is expected to pave the path of concrete performance via extensive research on different suggested design factors.