Experimental Study on the Effect of Boric Acid Corrosion on the Performance of Reinforced Concrete

Table 3

Mechanical properties of steel bar and steel plate in an immersion environment.

Test environment		Steel bar			Steel plate
Age (d)	Concentration (%)	Yield strength (MPa)	Ultimate strength (MPa)	Corrosion rate (%)	Yield strength (MPa)	Ultimate strength (MPa)	Corrosion rate (%)
60	0	461.2	619.8	0.086	312.0	471.5	0.047
	0.27	460.7	619.6	0.086	312.3	471.2	0.063
	0.8	461.0	619.8	0.090	312.5	471.3	0.068
	3	461.2	620.0	0.092	312.5	471.2	0.078
120	0	461.2	619.8	0.113	312.5	471.5	0.063
	0.27	461.0	619.6	0.129	312.3	471.4	0.073
	0.8	461.0	619.6	0.132	312.2	471.4	0.078
	3	460.8	619.6	0.139	312.3	471.2	0.089
180	0	461.1	620.0	0.135	312.4	471.6	0.094
	0.27	461.0	619.7	0.140	312.6	471.3	0.100
	0.8	461.0	619.7	0.148	312.0	471.5	0.109
	3	461.0	619.7	0.146	312.4	471.2	0.099
240	0	462.0	620.3	0.160	312.3	471.4	0.120
	0.27	461.5	619.3	0.166	312.8	471.5	0.131
	0.8	460.8	620.0	0.174	312.1	471.1	0.146
	3	461.2	620.5	0.180	312.5	471.3	0.125
300	0	460.5	618.9	0.176	312.0	470.0	0.156
	0.27	460.0	618.5	0.170	312.2	470.5	0.172
	0.8	461.8	619.3	0.180	311.0	470.8	0.199
	3	459.7	619.6	0.158	311.6	471.0	0.121