This study’s main objective was to assess a newly built magnetorheological hammer for use in core and ultrasonic probe velocimetry (UPV) testing to determine the compressive strength of RC. By reusing or recycling existing materials, reinforced concrete has been found to reduce building costs and have a smaller negative impact on the environment. On the other hand, well-established techniques for determining material strength without breaking it include magnetorheological hammer and core testing. This study set out to determine the compressive strength of RC using the suggested methodology and compare the results to those attained using 150 mm core specimens. To do this, three different types of concrete were created. The OPC, river sand, and natural aggregate (crushed granite) were used to make concrete. These concrete mixtures, which contained aggregates no larger than 20 mm, were poured in order to evaluate a newly designed magnetorheological design using UPV, core, and hammer methods. Using this multi-faceted strategy, correlations between UPV, core testing, and magnetorheological (MR) hammer were also obtained. These results are more encouraging than those from the rebound hammer test, which showed that it was impossible to anticipate with any degree of accuracy the compressive strength of the RC. © 2024 Elsevier B.V., All rights reserved.