硅酸盐学报2018，Vol.46Issue(2)：163-172,10.DOI:10.14062/j.issn.0454-5648.2018.02.10
氧化石墨烯对水泥水化进程及其主要水化产物的影响
Effect of Graphene Oxide on Hydration Process and Main Hydration Products of Cement
摘要
Abstract
The influence of graphite oxide (GO) on the hydration of cement and its main hydration products,i.e., calcium hydroxide (CH) and hydrated calcium silicate gel (C-S-H), was investigated. The GO was characterized by atomic force microscopy, transmission electron microscopy. The hydration degree and the content of hydration products of fresh cement paste with different GO dosages (i.e., 0％, 0.01％, 0.03％ and 0.05％, in mass fraction) were measured by means of hydration heat analysis, X-ray diffraction and thermogravimetric analysis. The results show that the GO has no effect on the hydration process of cement, but it can extremely affect the formation of hydration products, especially the crystallization process and morphology of calcium hydroxide. GO has an important influence on the pore characteristics of hardened cement paste. The more free water can be formed in the gel pore, and the pore structure can be refined to a certain extent when the GO content is increased. Also, the presence of graphene oxide inhibits the formation of hexagonal plates crystals, and refines the size of crystalline calcium hydroxide.关键词
氧化石墨烯/水泥水化/晶体氢氧化钙/孔结构Key words
graphite oxide/hydration/calcium hydroxide crystal/pore structure分类
化学化工引用本文复制引用
王琴,李时雨,王健,潘硕,郭紫薇,吕春祥..氧化石墨烯对水泥水化进程及其主要水化产物的影响[J].硅酸盐学报,2018,46(2):163-172,10.基金项目
国家自然科学基金(51508020). （51508020）
