Workability and Mechanical Properties of Polymer Modified Self-Compacting Concrete

Abstract

Abstract: The polymer modified cement concrete has good tensile properties and durability, and it is widely used, while the polymer modified self-compacting concrete is rarely used. The basic mechanical properties and workability of epoxy resin modified self-compacting concrete were studied. Four kinds of epoxy resin content (0%, 5%, 10%, 15%, mass fraction) were used in the experiment, and the effect of different epoxy resin content on the basic mechanical properties and workability of modified self-compacting concrete were obtained. The results show that: compared with ordinary self-compacting concrete, when the mass fraction of epoxy resin is 5%, the compressive strength is improved to a certain extent; when the mass fraction of epoxy resin is 10%, the flexural strength is the best; when the mass fraction of epoxy resin is 10% or more than 10%, the macropores in concrete turn into micropores; when the mass fraction of epoxy resin reaches 15%, the epoxy resin solidifies into clusters and destroys the internal structure of concrete. The flexural toughness of self-compacting concrete is improved with the increase of epoxy resin content. When the content of epoxy resin is high, the fluidity of self-compacting concrete decreases, but the fluidity can be improved by appropriately blending a water reducing agent.

Key words: epoxy resin, self-compacting concrete, workability, compressive strength, flexural strength, flexural toughness, pore distribution

CLC Number:

TU528

HOU Shengjun, JIANG Chenchen, TANG Weiyu, TAO Wenjiang, AN Xuehui, MA Jiajun. Workability and Mechanical Properties of Polymer Modified Self-Compacting Concrete[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2021, 40(5): 1489-1496.

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