High Temperature Performance of Graphite Modified Concrete

Abstract

Abstract: The influence of graphite and graphene oxide combined with basalt fiber on the high temperature performance of concrete was studied by mechanical properties and microstructure of concrete after heat treatment. The results show that the addition of graphite reduces the mechanical stability of concrete, while graphene oxide greatly improves the mechanical stability of concrete and effectively reduces the deterioration effect of heat treatment. The combination of basalt fiber with graphite and graphene oxide not only fails to form a synergistic effect, but also reduces the mechanical properties of the specimens. The micro-analysis show that graphite disperses in the material system formed interface transition zone defects, but graphene oxide forms a close and continuous cross-linking structure in the material system, which effectively improves the high temperature mechanical properties of concrete.

Key words: graphite, graphene oxide, concrete, microstructure

CLC Number:

TQ178

ZHENG Huijun. High Temperature Performance of Graphite Modified Concrete[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2020, 39(12): 3851-3857.

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