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个人信息Personal Information
教授
博士生导师
硕士生导师
任职 : 建筑材料研究所所长、土木水利国家级实验教学中心常务副主任
性别：男
毕业院校：大连理工大学
学位：博士
所在单位：建设工程学院
学科：材料学. 结构工程. 市政工程
办公地点：大连理工大学3号实验楼
联系方式：0411-84707101
电子邮箱：wangbm@dlut.edu.cn
Influence of carbon nanofibres/silica fume on mechanical performance of cement mortars [Wp?yw dodatku nano-w? kien w?glowych i py?u krzemionkowego na fizyczne w?a?ciwo?ci zapraw cementowych]
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论文类型：期刊论文
发表时间：2015-01-01
发表刊物：Cement, Wapno, Beton
收录刊物：Scopus
卷号：2015
期号：4
页面范围：217-224
ISSN号：14258129
摘要：The influence of carbon nanofibres (CNFs)/silica fume (SF) addition on physical performance of cement mortars was investigated. CNFs were added in 0.15%, 0.25% and 0.35% by mass of cement in mortars, with constant water/cement ratio of 0.35 as well as aggregate/cement ratio of 1.5 in all samples. The mechanical properties, porosity and pore structure (MIP) as well as microstructure (SEM and EDS) of all mortar samples were examined. The test results showed that the SF addition has an dispersion effect on carbon nanofibers in cement matrix, which increased the mechanical properties of the mortar samples. The results showed that the addition of CNFs/SF increased the flexural and compressive strength of mortars, even of about 30% and 41% respectively. The addition of CNFs/ SF improved also the pore structure, and SEM analysis showed that the CNFs are forming bridges through micro-cracks and improve the interfacial transition zone in cement matrix. ? 2015, Foundation Cement, Lime, Concrete. All rights reserved.