Table 4: Ultrasonic pulse velocity (m/sec) measurements for various concretes.

Mix IdCuring days
1st day3rd day7th day14th day28th day56th day

M1A1384040804400442045504720
M1A2386041204370451046054760
M1A3365039404280456045704700
M1A4334036204240452045604580
M2B1320034003980413044554610
M2B2368038204010420044504510
M2B3375039704310455045804600
M2B4398040404280443045904610
M3C1367039804375445045004590
M3C2341037803950401044604620
M3C3327035303740422044154480
M3C4387039604080437045104480
M4D1353039404190407044604630
M4D2347036403930441045204610
M4D3359036104020447045104410
M4D4356036803970410042804520