The effect of carbon nanotube incorporation on the chloride ion permeation resistance of ultra-high performance concrete(UHPC)is not clear,and there are few studies involving the effect of loading on the chloride ion permeation resistance of UHPC.Therefore,the effects of carbon nanotubes and loading on the chloride ion permeation resistance of UHPC was investigated by measuring the chloride ion diffusion coefficient by chloride ion diffusion coefficient method,determining the chloride ion concentration at different depths under salt solution immersion,and observing the microstructure and other experimental methods.The results show that the damage caused by loading will reduce the chloride ion permeation resistance of UHPC.Effect of different concentrations of carbon nanotubes on the chloride ion permeation resistance of UHPC under different loading levels is different.Carbon nanotubes play the role of both filling the pores and promoting the electrochemical corrosion of steel fibers.
ultra-high performance concretecarbon nanotubesteel fiberchloride ion diffusion coefficientchloride ion concentrationmicrostructure
NETL
NSTL
维普
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