3D neutron tomography of steel reinforcement corrosion in cement-based composites

被引：27
|
作者：
Zhang, Peng [1 ,2 ]
Liu, Zhaolin [1 ]
Wang, Yu [3 ]
Yang, Jinbo [4 ]
Han, Songbai [3 ]
Zhao, Tiejun [1 ]
机构：
[1] Qingdao Univ Technol, Ctr Durabil & Sustainabil Studies, Qingdao 266033, Peoples R China
[2] Karlsruhe Inst Technol, Inst Concrete Struct & Bldg Mat, D-76131 Karlsruhe, Germany
[3] China Inst Atom Energy, Neutron Scattering Lab, Beijing 102413, Peoples R China
[4] Shandong Agr Univ, Dept Civil Engn, Tai An 271018, Shandong, Peoples R China
来源：
CONSTRUCTION AND BUILDING MATERIALS | 2018年 / 162卷
关键词：
Neutron tomography; Steel reinforcement corrosion; Strain Hardening Cementitious Composites (SHCC); Crack; CONCRETE;
D O I：
10.1016/j.conbuildmat.2017.12.057
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
Corrosion of steel reinforcement is one of the major durability problems for reinforced concrete structures. The steel corrosion in both ordinary mortar and strain hardening cementitious composites (SHCC) has been for the first time visualized by means of neutron tomography in three dimensions with high resolution. It has been found that the steel rebar starts corroding from the bottom interface between the steel and cementitious matrix. The corrosion products mainly exist around the cracks. Microcracking SHCC has higher resistance against steel rebar corrosion than cracked ordinary mortar. (C) 2017 Elsevier Ltd. All rights reserved.
引用
收藏
页码：561 / 565
页数：5
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