Experimental Study on Equivalent Strength of Induced Joints with consideration to Influence of Concrete Strength, Inducer Spacing, and Concrete Age

Table 2

Summary of equivalent strength test results for different concrete strengths.

Inducers form	Specimen size; L × n × m (mm)	Number	Age (day)	Space (mm)	Average load (kN)	Equivalent strength average (MPa)
Bidirectional interval nonpenetration induced joints	500 × 150 × 150	1-C20-90	90	20	28.733	1.277
		1-C30-90			41.009	1.823
		1-C40-90			53.350	2.371
		2-C20-28	28	10	24.758	1.073
		2-C20-28		20	24.935	1.094
		2-C20-28		30	25.632	1.144
		2-C20-28		40	26.836	1.164
		2-C20-28		50	27.011	1.179
		2-C20-28		60	27.192	1.184
		3-C20-7	7	20	10.148	0.451
		3-C20-14	14		20.231	0.740
		3-C20-28	28		24.593	1.093
		3-C20-60	60		26.528	1.179
		3-C20-90	90		28.733	1.277