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

被引：30
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.
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页数：8
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