Abstract
The change of concrete resistivity reflects the change of concrete porosity. The variation law of concrete resistivity within the age range of concrete is studied, and the effects of water binder ratio and fly ash content on concrete resistivity are studied. The change law of resistivity of concrete sulfuric acid corrosion was studied. The results show that the resistivity of concrete increases gradually with the increase of age. With the increase of water binder ratio and fly ash content, the resistivity increases with age. With the increase of sulfuric acid corrosion time, the concrete resistivity decreases gradually. With the decrease of sulfuric acid pH value, fly ash content and water binder ratio, the reduction range of concrete resistivity increases.
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