GO改性掺尾矿胶砂试块的抗压强度及水化产物  

Compressive Strength and Hydration Products of Tailings Based Mortars Modified by Graphene Oxide

作　　者：李春 张创[1] 南宁 王之宇 刘璇[1,2,3] 周春生 崔孝炜[1,2,3] Li Chun;Zhang Chuang;Nan Ning;Wang Zhiyu;Liu Xuan;Zhou Chunsheng;Cui Xiaowei(College of Chemical Engineering and Modern Materials,Shangluo University,Shangluo,Shaanxi 726000;Shaanxi Key Laboratory of Com­prehensive Utilization of Tailings Resources,Shangluo University,Shangluo,Shaanxi 726000;Research Centre of Grapheme Technology and Application,Shangluo University,Shangluo,Shaanxi 726000)

机构地区：[1]商洛学院化学工程与现代材料学院,陕西商洛726000 [2]商洛学院陕西省尾矿综合利用重点实验室,陕西商洛726000 [3]商洛学院商洛市石墨烯技术与应用研究中心,陕西商洛726000

出　　处：《非金属矿》2022年第6期46-49,共4页Non-Metallic Mines

基　　金：陕西省教育厅重点科学研究计划(20JS041);陕西省尾矿资源综合利用重点实验室开放基金资助项目(2017SKY-WK011);国家级大学生创新创业训练计划项目(202111396002)。

摘　　要：为阐明GO改性掺尾矿胶砂试块的水化反应进程,制备了不同GO添加量下的掺尾矿胶砂试块,探究GO添加量对胶砂试块抗压强度和主要水化产物的影响。结果表明,随着GO添加量的增大,胶砂试块的抗压强度和化学结合水含量均呈现出先增大后减小的变化趋势。当GO添加量为0.04%时,相较于未改性的胶砂试块,改性后胶砂试块3 d、7 d和28 d抗压强度分别提高48.87%、34.11%和26.74%,且水化反应进程提高;同时,添加GO抑制了CH生成,对CH(001)晶面的微晶粒具有细化作用。In order to clarify hydration process of tailings based mortars modified by graphene oxide,the tailings based mortars were prepared by adding different amounts of GO,and the effect of GO addition on the compressive strength and hydration products of tailings based mortars were investigated.The results show that with GO addition increasing,the compressive strength and chemically bonded water increase firstly and reduce afterward.When the addition of GO is 0.04%,the compressive strengthes are increased by 48.87%,34.11%and 26.74%respectively at 3 d,7 d and 28 d hydration reaction compared with unmodified mortars.And the hydration reaction process of mortar is improved.Meanwhile,the addition of GO inhibits the formation of CH and refines the microcrystals on the CH(001)plane.

关 键 词：氧化石墨烯 胶砂试块 抗压强度 化学结合水 水化产物 

分 类 号：TU522[建筑科学—建筑技术科学] X75[环境科学与工程—环境工程]