Visualization of rapid penetration of water into cracked cement mortar using neutron radiography

被引：26

作者：

Zhang, Peng ^{[1
,3
]}

Liu, Zhaolin ^{[1
]}

Han, Songbai ^{[2
]}

He, Linfeng ^{[2
]}

Mueller, Harald S. ^{[3
]}

Zhao, Tiejun ^{[1
]}

Wang, Yu ^{[2
]}

机构：

[1] Qingdao Univ Technol, Ctr Durabil & Sustainabil Studies, Qingdao 266033, Peoples R China

[2] China Inst Atom Energy, Neutron Scattering Lab, Beijing 102413, Peoples R China

[3] Karlsruhe Inst Technol, Inst Concrete Struct & Bldg Mat, D-76131 Karlsruhe, Germany

来源：

MATERIALS LETTERS | 2017年 / 195卷

基金：

中国国家自然科学基金;

关键词：

Neutron radiography; Crack; Porous materials; Cement mortar; Water penetration; Visualization; RESEARCH REACTOR; CONCRETE;

D O I：

10.1016/j.matlet.2017.02.077

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The penetration of water and other aqueous solutions into cracked cementitious materials is important in a variety of engineering contexts. The quick process of water penetration into cracked cement mortar during the first few seconds has been visualized for the first time with high temporal resolution of 10 fps by neutron radiography (NR). The results indicate that cracks are filled with water instantaneously by capillary action whenever they come in contact with water. The water front travelled more than 20 mm during the first second. Time-dependent moisture distributions in the cracked cement mortar during water penetration testing have also been quantitatively analysed.(C) 2017 Elsevier B.V. All rights reserved.

引用

页码：1 / 4

页数：4

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