Influence of Surface Coating on Water Absorption Performance of Concrete

Abstract

Abstract: Four kinds of surface coatings were used, and the water absorption rate was used as an evaluation index to study the change law of water absorption performance of the concrete specimens after the surface coating. The test results show that the surface coatings reduce the water absorption rate of the concrete specimens to varying degrees. The effect of polyurethane coating is the best, and the effect of emulsion coating is the worst. The effects of fluorocarbon coating and bridge coating are between the polyurethane coating and the emulsion coating. With the increase of times of coating brushing, the water absorption rate of the concrete specimens gradually decreases, but the reduction range decreases. According to the environment of the concrete structure, select the appropriate times of coating brushing from the economic point. With the increase of water-cement ratio, the water absorption rate of the blank and the painted concrete specimens increases significantly.

Key words: concrete, surface coating, water absorption rate, durability, water-cement ratio, coating thickness

CLC Number:

TU528

LIU Fang, XIONG Rui, ZHONG Yongqiang. Influence of Surface Coating on Water Absorption Performance of Concrete[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2021, 40(7): 2209-2214.

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