Table 5.

Test results of the bending strength of each sample.

Type	Condition	Load (kN)	Strength (MPa)	Average Strength (MPa)
Hybrid concrete	No sulfate	10.43	19.55	18.08
	No sulfate	9.70	18.19
	No sulfate	8.81	16.51
	With sulfate	8.89	16.66	14.70
	With sulfate	7.60	14.25
	With sulfate	7.04	13.20
Plain concrete	No sulfate	3.89	7.30	7.13
	No sulfate	3.84	7.21
	No sulfate	3.67	6.87
	With sulfate	3.26	6.11	5.95
	With sulfate	3.25	6.09
	With sulfate	3.00	5.63