Abstract
Abstract Emerging nanomaterials provide an invaluable opportunity for the development of cementitious materials. Many scholars have explored the influence of graphene (GP) and graphene oxide (GO) on the performance of the cementitious materials. This article reviews the previous research on the effect of GP and GO on the properties of cementitious materials. Detailed review of the mechanical properties and durability of cementitious materials containing GP or GO nanofilms is presented, and the mechanism is discussed. The mechanical properties of GO-cementitious materials are significantly enhanced. The optimal improvement of GO-modified compressive, flexural, and tensile strengths is 77.3%, 78.3%, and 78.6%, respectively. The durability of GO- and GP-modified cementitious material is compared with the control group. The incorporation of GP or GO significantly improves the sulfate attack resistance, and the transport properties can be decreased, while the frost resistance of GO- and GP-modified cementitious materials needs further research. This literature review shows that the microstructure of GO- and GP-modified cementitious material is improved in three aspects: accelerating the cement hydration, refining the pore structure, and hindering the crack propagation.
Highlights
Cementitious materials have been generally used in the world and will still be one of the main building materials in the twenty-first century
Zhou [75] observed the effect of GP and graphene oxide (GO) on the frost resistance of cementitious materials, and it was found that the weight loss of the GO-modified mortar is lower than the GPmodified mortar and control mortar
In the study by Muthu and Santhanam [78], the GO-modified and nanoalumina-modified cement pastes were soaked in the acidic solution, and when compared with the unmodified sample, the porosity of the cement pastes was reduced by 46% and 51%, respectively
Summary
Cementitious materials have been generally used in the world and will still be one of the main building materials in the twenty-first century. Carbon nanotubes (CNTs) as a microscopic fiber can significantly enhance the strength [25], toughness [26], and durability [27] of cementitious materials and will affect the electrical [28] and thermal [29] conductivity, making cementitious materials multifunctional and smart [30,31,32,33]. The results of the previous research have shown that GO can regulate the hydration reaction [43], and GO and GP nanoplatelets can give functions and intelligence to cementitious materials [38,44,45,46], so the study of the GPand GO-modified cementitious materials are of great significance and have attracted the attention of scholars. This article reviews recent studies on GP- and GOmodified cementitious materials, focuses on the mechanical and durability properties of GP- and GO-modified cementitious materials, and discusses the related mechanism
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