| dc.description.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) | en_US |
