The impact of cement type on the correlation between non-destructive testing and the compressive strength of concrete

Buildings' concrete structures are weakened by destructive tests like "coring", which compress cylindrical specimens in the lab to measure the compressive strength of in situ hardened concrete.These tests also produce trash that is hazardous to the environment.Alternative methods to destructive concrete testing include rebound hammering and ultrasonic non-destructive testing of hardened concrete.The first goal of this research is to determine the link between compressive strength, rebound hammer, and ultrasonic pulse velocity tests.The second goal is to investigate the impact of cement type and concrete age on these correlations.In this case, two cement kinds (CEM I 42.5 and CEM II 42.5) and two concrete compositions based on local resources were developed in this context.Simultaneous tests on cubic samples (ultrasonic test, rebound hammer test, compressive strength test) were conducted at ages 7 and 28 days.According to the studies' findings, there is a strong association between compressive strength and the ultrasonic and rebound hammer tests.The compressive strength of concrete can be predicted using these relationships without the requirement for destructive testing.Additionally, the results demonstrate that these correlations are impacted by the type of cement and the age of the concrete, demonstrating that these two parameters have an impact on the outcomes and that it is important to consider them.