The effect of the reaction time of the light burnt magnesium oxide on the durability of concrete such as impermeability and carbonization resistance was studied,and the influence mechanism of the activity of the light burned magnesium oxide on the durability of concrete was further explored and analyzed by scanning electron microscopy and mercury poroscopy,and the results showed that the early hydration reaction rate of the light burned magnesium oxide M75 with short active reaction time and high hydration activity was faster,and the hydration products were easier to fill the voids inside the cement concrete.Optimizing the pore size distribution and porosity of cement concrete has a more significant effect on the improvement of water permeability,chloride ion permeability resistance and carbonization resistance of concrete.However,the early hydration reaction rate of light-burned magnesium oxide M190 with long active reaction time and low hydration activity is relatively slow,and the pore filling ability decreases,and the effect on improving the anti-permeability of concrete is relatively weak.
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维普
