Implementation of capillary penetration coefficient on water sorptivity for porous building materials: An experimental study

被引：5
作者：
El Abd, A. [1 ]
Taman, M. [2 ]
Kichanov, S. E. [3 ]
Hamad, E. [1 ]
Nazarov, R. . M. [3 ,4 ]
机构：
[1] Egyptian Atom Energy Author, Nucl Res Ctr, Reactor Phys Dept, Abu Zaabal 13759, Egypt
[2] Tanta Univ, Fac Engn, Dept Struct Engn, Tanta 31511, Egypt
[3] Joint Inst Nucl Res, Frank Lab Neutron Phys, Dubna 141980, Russia
[4] Eurasian Natl Univ, Astana 010008, Kazakhstan
来源：
CONSTRUCTION AND BUILDING MATERIALS | 2021年 / 298卷
基金：
中国国家自然科学基金;
关键词：
Neutron radiography; Bricks; Capillary coefficient; Sorptivity; Porosity; Water front; Profiles; PORE-SIZE DISTRIBUTION; NEUTRON-RADIOGRAPHY; UNSATURATED DIFFUSIVITY; MOISTURE DISTRIBUTIONS; ABSORPTION; SANDSTONE; MIGRATION; MORTARS; FLOW;
D O I：
10.1016/j.conbuildmat.2021.123758
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
Neutron radiography is used to study the relation between water sorptivities (s) and capillary penetration coefficient (k), and to reveal impacts of sealing method on the water absorption process in brick samples. Except for the ends, the samples' outer surfaces were coated with a polymeric waterproofing slurry. While the samples were absorbing water, neutron radiography images were recorded continuously. Analyses of the acquired images, as well as published results for construction building materials, were used to determine water sorptivities (s), capillary penetration coefficient (k), and capillary porosity (theta(c)). The results showed that s is proportional to k in a direct manner, and that theta(c) is the proportionality constant. It was found that samples coated with a polymeric waterproofing slurry absorb water more quickly than samples coated with acrylic paint. (C) 2021 Elsevier Ltd. All rights reserved.
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页数：10
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