文献类型：会议论文

英文题名：Resistance of chlorides-induced corrosion of steel bar embedded in CNTs-OH modified concrete

作者：Wang, Zhongkun Fan, Jie Li, Gengying

第一作者：Wang, Zhongkun

通信作者：Li, Gengying

机构：[1] College of Water Conservancy and Civil Engineering, South China Agricultural University, Guangzhou, 510642, China; [2] School of Civil Engineering, Guizhou Institute of Technology, Guiyang, 55003, China

第一机构：College of Water Conservancy and Civil Engineering, South China Agricultural University, Guangzhou, 510642, China

会议论文集：Properties and Testing Techniques of Inorganic Materials III

会议日期：July 19, 2017 - July 21, 2017

会议地点：Kunming, China

语种：英文

外文关键词：Bars (metal) - Carbon nanotubes - Cements - Chlorine compounds - Microstructure - Steel corrosion - Testing - Water absorption

年份：2018

摘要：Aim of this paper is to evaluate the influence of hydroxyl carbon nanotubes (CNTs-OH) content (by 0.1-0.5% of cement weight) on the resistance of chlorides-induced corrosion of steel bar embedded in concrete. The corrosion process of concrete was monitored by using half-cell potential method (Ecorr, mv CSE). Test results show that the addition of CNTs-OH considerably increased the resistance of rebar chlorides induced corrosion of concrete, and the optimum content of CNTs was about 0.3% by mass of cement. Simultaneously, results also indicate that the measuring position impacted the corrosion potential value, in which the point on the water/air interface had the highest corrosion probability. In addition, the water absorption and SEM of concrete containing CNTs-OH were also investigated, and the pore-filling effect of CNTs-OH was observed to improve the properties of concrete. ? 2018 Trans Tech Publications, Switzerland.