Experimental study on flexural performance of CFRP-coral concrete beams
In order to study flexural performance of CFRP-coral concrete beam,flexural test of CFRP-coral concrete beam was carried out.The flexural bearing capacity,failure mode,crack development and deflection of CFRP-coral concrete beam were studied with ordinary steel-coral concrete beam of the same diameter as the control group.The results show that when the reinforcement ratio and the concrete strength are the same,the bearing capacity of the CFRP-coral concrete beam is higher than that of ordinary steel-coral concrete beam.When the concrete strength increases from 34.8MPa and 37.7MPa to 44.0MPa,the ultimate bearing capacity of the test beam increases by 21.42%and 16.11%,the crack width decreases by 3.6%and 5.9%,respectively,and the deflection also decreases with the increase of the concrete strength.The flexural bearing capacity of CFRP-coral concrete beams was calculated by using the American specification ACI 440.1R-15.It is found that it is overestimated and it is recommended to consider the influence of component deflection.
NETL
NSTL
万方数据
