The Effect of Accelerators and Mix Constituents on the High Early Strength Concrete Properties

Table 4

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

Mix Id	Curing days
	1st day	3rd day	7th day	14th day	28th day	56th day
M1A1	3840	4080	4400	4420	4550	4720
M1A2	3860	4120	4370	4510	4605	4760
M1A3	3650	3940	4280	4560	4570	4700
M1A4	3340	3620	4240	4520	4560	4580
M2B1	3200	3400	3980	4130	4455	4610
M2B2	3680	3820	4010	4200	4450	4510
M2B3	3750	3970	4310	4550	4580	4600
M2B4	3980	4040	4280	4430	4590	4610
M3C1	3670	3980	4375	4450	4500	4590
M3C2	3410	3780	3950	4010	4460	4620
M3C3	3270	3530	3740	4220	4415	4480
M3C4	3870	3960	4080	4370	4510	4480
M4D1	3530	3940	4190	4070	4460	4630
M4D2	3470	3640	3930	4410	4520	4610
M4D3	3590	3610	4020	4470	4510	4410
M4D4	3560	3680	3970	4100	4280	4520