Water distribution characteristics in cement paste with capillary absorption (Publication with Expression of Concern)

被引：29

作者：

Hong, Shuxian ^{[1
]}

Yao, Wanqiong ^{[1
]}

Guo, Bangwen ^{[1
]}

Lin, Chen ^{[1
]}

Dong, Biqin ^{[1
]}

Li, Weiwen ^{[1
]}

Hou, Dongshuai ^{[2
]}

Xing, Feng ^{[1
]}

机构：

[1] Shenzhen Univ, Shenzhen 518060, Peoples R China

[2] Qingdao Technol Univ, Qingdao 266000, Peoples R China

来源：

CONSTRUCTION AND BUILDING MATERIALS | 2020年 / 240卷

基金：

中国国家自然科学基金;

关键词：

Cement; X-ray computed tomography (XCT); Capillary absorption; Water-cement (w/c) ratio; Water content profile; MERCURY INTRUSION POROSIMETRY; CONCRETE SURFACE-COATINGS; RAY COMPUTED-TOMOGRAPHY; C-S-H; NEUTRON-RADIOGRAPHY; PORE STRUCTURE; ION DIFFUSION; PENETRATION; SATURATION; TRANSPORT;

D O I：

10.1016/j.conbuildmat.2019.117767

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

Water penetration is important to the durability deterioration of concrete structures. This study provides X-ray computed tomography (XCT) to nondestructively trace the capillary absorption process in hardened cement and investigate the influence of water-cement (w/c) ratio. With our proposed data analysis procedure, the changes of water absorption front position and the water content profile during the absorption process can be obtained. The results show that the w/c ratio not only influences the capillary coefficient and sorptivity, but also changes the absorbed water distribution. The obtained results are verified and further used to investigate the influence of the w/c ratio on the capillary absorption features. (C) 2019 Elsevier Ltd. All rights reserved.

引用

页数：8

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