Table 4.

Bending strengths of samples during different ages.

Time	Type	Load (kN)	Strength after Reduction (MPa)	Average Strength (MPa)
3 days	Plain concrete	9.37	2.39	2.42
		9.03	2.30
		10.07	2.57
	Hybrid concrete	27.34	6.97	6.97
		17.16	4.37 *
		27.84	7.10
7 days	Plain concrete	13.50	3.44	3.60
		13.70	3.49
		15.17	3.87
	Hybrid concrete	28.74	7.33	7.61
		28.81	7.34
		31.97	8.15
28 days	Plain concrete	12.86	3.88	3.95
		15.95	4.07
		14.11	3.9
	Hybrid concrete	44.50	11.35	11.51
		45.20	11.53
		45.70	11.65

Note: * indicates that the abnormal data were ignored when calculating the average value.