碳纳米管对硅酸盐水泥耐腐蚀性的影响研究  

Research on Anti-corrosion Properties of Portland Cement doped with Carbon Nanotubes

作　　者：赵晋津[1] 任书霞[1] 吕臣敬[1] 卢雪[1] 朱文华 

机构地区：[1]石家庄铁道大学材料科学与工程学院,河北石家庄050043 [2]中国中铁二局第四工程有限公司,四川成都610300

出　　处：《石家庄铁道大学学报（自然科学版）》2013年第2期88-91,共4页Journal of Shijiazhuang Tiedao University(Natural Science Edition)

基　　金：河北省引进留学人员资助项目(D2011003044);河北省教育厅项目(2011170;Y2011112);高性能陶瓷和超微结构国家重点实验室开放课题基金(SKL201105SIC);河北省自然科学基金(E2012210015);国家自然科学基金(51102172)

摘　　要：研究了碳纳米管对硅酸盐水泥耐腐蚀性的影响,采用SEM和能谱对碳纳米管水泥的水化产物形貌进行测试,并对改性机理进行了初步研究。试验结果表明:碳纳米管的掺入可以改善水泥净浆的抗酸性硫酸盐及盐酸侵蚀,当碳纳米管的掺量为0.1%时,水泥净浆试件的抗腐蚀性最佳。在最佳掺量下,水泥净浆试件在浓度分别为5%的Na2SO4和HCl溶液中浸泡28 d的抗压强度较未掺杂碳纳米管试件分别提高了46.3%和56.8%,抗拉强度分别提高了60.3%和11.5%。初步分析碳纳米管的掺入可改善硅酸盐水泥耐腐蚀性的机理在于填充作用和桥联增强效应。The acid sulfate and hydrochloric acid resistance of Portland cement doped with Carbon Nano- tubes （CNTs） are studied in this paper. The morphology of Carbon Nanotubes modified cement composites are determined by SEM and EDS, and the modified mechanism is discussed later. The experimental results indicate that Carbon Nanotubes can improve the acid sulfate and hydrochloric acid resistance of cement and the most fa- vorable content is 0.1%. Comparing to those of the control one, the compressive strength of the cement doped with 0.1% Carbon Nanotubes soaking in the acid sulfate and hydrochloric acid with the concentration of 5% af- ter 28days are increased by 46.3% and 56.8% respectively, and the tensile strength are increased by 60.3% and 11.5 %. The mechanism of Carbon Nanotubes increasing the corrosion resistance of cement lies in its micro- filling and fiber bridge effect.

关 键 词：碳纳米管 硅酸盐水泥 硫酸盐侵蚀 盐酸侵蚀 力学性能 

分 类 号：TU528.01[建筑科学—建筑技术科学]