Effect of fly ash and surface protectant on the anti-chloride ion penetration performance of concrete
The key to improve the durability performance of concrete is to improve its impermeability.Applying surface protectant and adding fly ash are two common technical solutions.In order to study the synergistic effect of the two solutions on the anti-chloride ion penetration performance of concrete,different amounts of fly ash concrete were designed.Some of the specimens were coated with surface protectant.The cubic compressive strength tests and chloride ion permeability resistance test were conducted.The test results show that the compressive strength of concrete is significantly affected by the amount of fly ash admixture,but not much by the surface protectant.The surface protectant has a more obvious effect on the improvement of chloride ion permeation resistance of concrete without or with a small amount(9.5%)of fly ash;For the fly ash concrete with a larger admixture(19%),it is recommended to test its chloride ion permeation resistance with the results of long age is appropriate.
anti-chloride ion penetration performancefly ashsurface protectantdurability
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