Statistical Quality Assessment of M60A20 Grade Concrete: A Case Study

Abstract

Abstract: Concrete is one of the thing that comes into mind whenever we think about construction of anything, be it buildings, dams, airports, ports, roads etc. It is the most produced and used construction material in world and demand for it will increase day by day. Quality Control during production of concrete therefore becomes an important tool for achieving the highest quality concrete and at a lower cost. The compressive strength is considered to be the most important property and it is used as an indicator to check the quality of concrete and to judge compliance with the specifications. Variability in compressive strength of concrete produced in batches is inevitable in practice. Numerous studies have been carried out and statistical approaches have been devised in the field of quality control to analyse the statistics of strength results in order to draw conclusions about quality level in concrete plants and ways to improve it. In the present research the quality of concrete is examined using well established quality control tools and techniques. The main objective of the study is to assess the compressive strength of M60A20 grade concrete produced at site and evaluate the variance for strength deviation and evaluate opportunities for improvement in concrete production processes and in pouring methods of concrete.