Experimental Study on the Compressive Strength of Big Mobility Concrete with Nondestructive Testing Method

Table 3

Result of concrete strength measurement according to different standard (specification).

Name of component	Rebound number	Depth of carbonation	Crushing compressive strength	By DBJ14-026-2004	By (1)	Error (%)
		(mm)	(MPa)	(MPa)	(MPa)	Equation (1)	DBJ14-026-2004
Column 1-A	39.5	6.0	34.3	26.6	32.9	4.0	22.6
Column 3-B	38.6	6.0	35.1	25.5	31.5	10.2	27.6
Column 5-C	39.5	5.0	33.2	28.4	34.0	2.5	14.5
Column 8-D	39.3	5.5	37.5	27.2	33.2	11.6	27.5
Column 10-E	38.9	6.0	35.8	25. 8	32.0	10.6	28.0
Column 15-F	40.2	4.5	36.2	30.4	35.8	1.2	16.1
Mean relative error						6.7	22.7