Korelasi antara hasil pengujian hammer, UPV dan kuat tekan beton mutu sedang

Abstract

Preserving the functional performance of buildings across their lifespan is crucial, especially when considering potential changes in use, unforeseen natural disasters, and the inevitable effects of time. Traditional destructive testing methods, while effective, can compromise structural integrity and disrupt building operations. Therefore, nondestructive testing methods have emerged as valuable tools for accurately assessing concrete condition without causing any damage. This study investigates the effectiveness of two such methods, the hammer test and Ultrasonic Pulse Velocity (UPV) test, in evaluating the compressive strength of different concrete grades (K225 to K325). Sixty cubic specimens were tested, with each grade having twelve samples to ensure robust data analysis. Results reveal strong correlations between both non-destructive tests and compression strength. The hammer test, with its simplicity and ease of use, demonstrates a moderate correlation (R² = 0.5452), while the UPV test, which provides deeper insights into internal concrete properties, exhibits a slightly lower correlation (R² = 0.0709). Notably, a combined equation incorporating both tests yields a significantly improved correlation (R² = 0.405), highlighting the potential for synergistic use of these two methods.