Electroosmotic transport in porous construction materials and dehumidification of masonry

被引：37

作者：

Bertolini, L. ^{[1
]}

Coppola, L. ^{[2
]}

Gastaldi, M. ^{[1
]}

Redaelli, E. ^{[1
]}

机构：

[1] Politecn Milan, Dipartimento Chim Mat & Ingn Chim G Natta, I-20131 Milan, Italy

[2] Univ Bergamo, Fac Ingn, I-24044 Dalmine, BG, Italy

来源：

CONSTRUCTION AND BUILDING MATERIALS | 2009年 / 23卷 / 01期

关键词：

Electroosmosis; Masonry; Humidity; Capillary suction; Dehumidification; Porous construction materials; CEMENT; CLAY; ZETA;

D O I：

10.1016/j.conbuildmat.2007.12.013

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

Techniques based on electroosmosis have been proposed as restoration methods to reduce the moisture content in masonry subjected to capillary suction. Although several applications have been reported in the literature and beneficial effects of electroosmosis are often claimed, very little technical information is available. Quite rarely quantitative measurements of humidity changes in the masonry following the application of the current are reported. This paper reports the results of a research work aimed at studying the electroosmotic transport through porous construction materials, in order to investigate the factors that influence electroosmosis and de. ne its actual technological applicability for the rehabilitation of damp masonry. The experimental tests showed that, for several concomitant circumstances, the chances that the technique based on electroosmosis might be effective in drying damp masonry are extremely low. (C) 2008 Elsevier Ltd. All rights reserved.

引用

页码：254 / 263

页数：10

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