Hydration and Early Age Properties of Graphene-Cement Composites

氧化石墨烯（GO）是一种新型的二维纳米平面光纤。氧化石墨烯通常是通过石墨的化学氧化和剥落产生的。一些作者还报道，用氧化石墨烯增强水泥基体会在微孔中形成水化硅酸钙（C-S-H）凝胶，从而提高复合材料的力学性能。显然，很少有研究考察氧化石墨烯水泥基复合材料的耐久性。本研究计划旨在研究使用纯石墨烯、氧化石墨烯和还原氧化石墨烯制备的石墨烯-水泥复合材料的可加工性、水化动力学、力学性能和输运性能。对三种类型的石墨烯粉末对水泥基复合材料的性能和性能的影响进行严格检查，将有助于更好地理解石墨烯最适合应用于建筑材料的形式类型。此外，还对材料的化学性质、性能的演变进行了评价，以阐明相应的水化机理。

Graphene oxide (GO) is a recently invented 2D nanoplane fiber. GO is typically produced via the chemicaloxidation and exfoliation of graphite. Some authors have also reported that reinforcing the cement matrix withGO results in the formation of calcium silicate hydrate (C-S-H) gel in the micropores, thereby enhancing theresultant composite's mechanical properties. Markedly few studies have examined the durability ofGO-cement-based composites. This proposed research program aims to examine the workability, hydrationkinetics, mechanical properties and the transport properties of graphene-cement composites using puregraphene, graphene oxide and reduced graphene oxide.Critical examination of the effect of the three types of graphene powders on the properties and performanceof cement based composites will allow for a better understanding of the type of form graphene is most suitablefor application to construction materials. In addition, the evaluation of the material chemistry, evolution of theproperties is warranted to shed light on the corresponding hydration mechanism.