Korelasi antara hasil pengujian hammer dan hasil pengujian UPV dengan hasil pengujian kuat tekan beton mutu rendah

Abstract

Low-strength concrete, commonly used in complementary/supporting part of road infrastructure like roadside, sidewalks, and paving, requires quality testing despite its lower compressive strength. Destructive testing, involving core drilling and compression testing, is the most effective method but is not always feasible due to potential structural damage and increased costs. As an alternative, non-destructive testing methods such as hammer tests and ultrasonic pulse velocity (UPV) tests are employed. This study is aimed to obtain the relationship between the compressive strength values from compression testing and the results of nondestructive testing in the form of hammer test and ultrasonic pulse velocity (UPV) test. The samples used were cubic concrete of K-100, K- 125, K-150, K-175, and K-200 strengths with an age of 28 days. The total number of samples was 60, with 12 samples for each variation of strength. The research results indicate that the average compression test value for K100 is 13,66 MPa, K125 is 19,93 MPa, K150 is 15,63 MPa, K175 is 19,40 MPa, and K200 is 20,78 MPa. The average value of the hammer test results was 18,29 for K100, 18,86 for K125, 20,80 for K150, 19,40 for K175, and 20,78 for K200. The average UPV test results for K-100 are 4182,47 m/s, K-125 is 4315,55 m/s, K-150 is 4323 m/s, K-175 is 4377,81 m/s, and K-200 is 4440,13 m/s. The correlation relationship between hammer testing and compression testing was obtained in the formula of Y = 0,7199x + 1,9563 (R² = 0,5741) (Where; X = hammer test; Y = compression test), UPV testing with compression testing in the formula of Y= 0,3023𝑒0,0009 (R² = 0,4356) (Where; X = UPV test; Y = compression test), and hammer testing, UPV testing with compressive test in the formula of Y = -38,08524 + 1,06996 X1 + 0,00778X2 (R² = 0,656) (Where; X1 = hammer test; X2 = UPV test; Y = compression test)