Bond Behavior of Wet-Bonded Carbon Fiber-Reinforced Polymer-Concrete Interface Subjected to Moisture

Table 2

Test results of all specimens.

Specimen; ID	Exposure (month)	(MPa)	Average	(mm)	Average	(N⋅mm/mm2)	Average	(kN)	Average	Failure; mode
RH-A-0-1	0	5.464	5.670	0.034	0.038	0.229	0.277	3.619	4.364	AD
RH-A-0-2		5.875		0.041		0.348		4.508		AD
RH-A-0-3		5.670		0.039		0.254		4.964		AD
RH-A-1-1	1	7.422	6.021	0.057	0.043	0.625	0.406	5.255	4.786	AD
RH-A-1-2		6.337		0.033		0.375		4.462		AD
RH-A-1-3		4.304		0.038		0.219		4.641		AD
RH-A-3-1	3	4.999	6.036	0.066	0.051	0.363	0.395	3.931	4.468	AD
RH-A-3-2		7.475		0.048		0.493		4.657		AD
RH-A-3-3		5.636		0.037		0.328		4.817		AD
RH-A-6-1	6	4.640	5.103	0.045	0.038	0.262	0.274	3.639	4.023	AD
RH-A-6-2		5.709		0.040		0.320		4.324		AD
RH-A-6-3		4.960		0.027		0.240		4.105		AD
RH-A-12-1	12	5.057	4.192	0.039	0.035	0.253	0.206	3.887	3.898	AD
RH-A-12-2		3.315		0.036		0.164		4.311		AD
RH-A-12-3		4.204		0.031		0.200		3.497		AD
RH-B-0-1	0	5.521	5.685	0.039	0.042	0.252	0.287	3.820	4.179	AD
RH-B-0-2		6.179		0.041		0.324		4.587		AD
RH-B-0-3		5.355		0.044		0.285		4.130		AD
RH-B-1-1	1	5.215	5.491	0.049	0.043	0.404	0.350	4.666	4.453	AD
RH-B-1-2		5.649		0.038		0.336		4.111		AD
RH-B-1-3		5.609		0.041		0.311		4.582		AD
RH-B-3-1	3	6.144	6.249	0.039	0.040	0.397	0.376	4.734	4.667	AD
RH-B-3-2		5.708		0.036		0.267		4.417		AD
RH-B-3-3		6.894		0.044		0.463		4.850		AD
RH-B-6-1	6	5.084	5.598	0.052	0.046	0.366	0.365	4.671	4.590	AD
RH-B-6-2		4.913		0.035		0.286		4.451		AD
RH-B-6-3		6.797		0.051		0.443		4.649		AD
RH-B-12-1	12	3.560	4.519	0.036	0.037	0.224	0.243	4.127	4.134	AD
RH-B-12-2		5.478		0.037		0.263		4.141		AD
RH-B-12-3		—				—		—		AD
RH-C-0-1	0	7.819	8.842	0.048	0.050	0.499	0.572	5.307	5.662	CO
RH-C-0-2		9.841		0.053		0.710		6.532		CO
RH-C-0-3		8.865		0.050		0.507		5.146		CO
RH-C-1-1	1	8.172	9.600	0.056	0.058	0.850	0.887	7.148	6.725	CO
RH-C-1-2		10.495		0.056		0.864		6.562		CO
RH-C-1-3		10.132		0.062		0.948		6.464		CO
RH-C-3-1	3	8.067	7.163	0.057	0.063	0.517	0.554	5.345	5.747	CO
RH-C-3-2		5.895		0.049		0.368		4.997		C/A
RH-C-3-3		7.528		0.082		0.776		6.900		CO
RH-C-6-1	6	5.868	7.492	0.051	0.064	0.563	0.611	5.941	6.212	AD
RH-C-6-2		7.778		0.088		0.671		6.145		C/A
RH-C-6-3		8.830		0.054		0.597		6.551		C/A
RH-C-12-1	12	9.332	8.182	0.050	0.051	0.471	0.487	5.601	5.586	AD
RH-C-12-2		—		—		—		—		AD
RH-C-12-3		7.032		0.052		0.504		5.571		AD

Note. AD: adhesive failure; CO: cohesive failure; C/A: mixed cohesive/adhesive failure.