Comparative Analysis of Concrete Compressive Strength using a Destructive Compression method and Non-destructive Rebound Hammer.

Abstract

Assessment of concrete compressive strength is important in ensuring structural integrity and durability of concrete structures. Traditionally, destructive testing methods using compression machines have been the standard for determining concrete strength. However, advancements in technology have introduced non-destructive testing methods such as the rebound hammer, which offer quick and economical alternatives. This study was aimed at comparing the accuracy, reliability, and practicality of these two methods in assessing concrete compressive strength. The experimental investigation involved conducting tests on concrete specimens using both the rebound hammer and compression machine. Data on rebound values and compressive strength measurements were collected and analysed using statistical approaches to evaluate the correlation between results obtained from these two methods. Factors such as surface conditions and moisture content were considered in the analysis to understand potential influences on test outcomes.Results from the research indicated strong correlations between compressive strength values obtained using the rebound hammer and compression machine tests. The comparative analysis highlighted scenarios where methods have very strong correlations and thus more likely to give comparable results. The findings of this research also offer insights that can enhance the reliability and accuracy of assessing concrete compressive strength on construction projects.