Compressive Strength Test Comparison Between Ready Mix Concrete and Batch Plant Concrete

Abstract

Ready-mixed concrete is manufactured according to the job requirement and delivered to the site of work in form of ready to use, where batch plant concrete is prepared at the site of construction manually. In this study experimental work was done to determine the compressive strength test of both ready-mixed concrete and batch plant concrete at a mixture ratio of 1:1.5:3 and to compare between them. For Batch plant concrete Portland composite cement (Supercrete), coarse aggregate, local sand from Bhuapur and Sylhet sand from Fazilpur was collected. Ready-mixed concrete was collected from vendor (NDE). Both types of concrete were prepared in a mix ratio of 1:1.5:3 in 6 cylinders of each type (200 x100 mm size) with curing time of 28 days. The compressive strength test was done by using Universal Testing Machine (UTM). The average compressive strength of ready-mixed concrete is found as 3528.774 psi, where the batch mix concrete is found as 3422.938 psi. The compressive strength of ready-mixed concrete is found as 3.1% higher than that of batch plant concrete. The tensile strength of both of the concretes is almost the same. Studying the failure pattern, most of the cylinders failed in common crush.