Spontaneous electrical effects in masonry affected by capillary water rise: The role of salts

被引：8

作者：

Franzoni, Elisa ^{[1
]}

Bandini, Simone ^{[1
]}

机构：

[1] Univ Bologna, Dipartimento Ingn Civile Ambientale & Mat, I-40131 Bologna, Italy

来源：

CONSTRUCTION AND BUILDING MATERIALS | 2012年 / 35卷

关键词：

Soluble salts; Efflorescence; Rising damp; Electrokinetic effects; Spontaneous potential; Brick masonry; SODIUM-SULFATE; DECAY; CRYSTALLIZATION; BUILDINGS; MOISTURE; DAMAGE;

D O I：

10.1016/j.conbuildmat.2012.04.098

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

The investigation of the electrical effects accompanying capillary water rise from ground in old masonries is of great practical interest, as such effects might be exploited for both measurement purposes (determination of moisture and soluble salts) and for dehumidification purposes (techniques based on electrokinetic principles). In the present paper, the spontaneous dc voltages arising in a real-scale masonry model subject to a steady-state capillary flux of saline solutions (0.05 M sodium chloride and 0.05 M sodium sulphate in water) were measured. The resulting voltage depends on the amount and distribution of salts, rather than on moisture content in the masonry. (C) 2012 Elsevier Ltd. All rights reserved.

引用

页码：642 / 646

页数：5

共 21 条

[1]

[Anonymous], 2005, FLOODING ENV CHALLEN

[2] Optical FBG Sensors for Static Structural Health Monitoring [J].

Antunes, Paulo ;

Varum, Humberto ;

Andre, Paulo .

PROCEEDINGS OF THE TWELFTH EAST ASIA-PACIFIC CONFERENCE ON STRUCTURAL ENGINEERING AND CONSTRUCTION (EASEC12), 2011, 14 :1564-1571

[3] Electroosmotic transport in porous construction materials and dehumidification of masonry [J].

Bertolini, L. ;

Coppola, L. ;

Gastaldi, M. ;

Redaelli, E. .

CONSTRUCTION AND BUILDING MATERIALS, 2009, 23 (01) :254-263

[4] Monitoring civil structures with a wireless sensor network [J].

Chintalapudi, K ;

Fu, T ;

Paek, J ;

Kothari, N ;

Rangwala, S ;

Caffrey, J ;

Govindan, R ;

Johnson, E ;

Masri, S .

IEEE INTERNET COMPUTING, 2006, 10 (02) :26-34

[5]

Franzoni E, 2010, ATT 4 CONV MON CONS, P60

[6] An experimental fixture for continuous monitoring of electrical effects in moist masonry walls [J].

Franzoni, Elisa ;

Sandrolini, Franco ;

Bandini, Simone .

CONSTRUCTION AND BUILDING MATERIALS, 2011, 25 (04) :2023-2029

[7]

Gallone P, 1970, PRINCIPI PROCESSI EL

[8]

GLASSTONE S, 1956, INTRO ELECTROCHEMIST

[9]

KORTUM G, 1951, TXB ELECTROCHEMISTRY

[10]

Larsen E.S., 1990, MATER STRUCT, V23, P16, DOI DOI 10.1007/BF02472994

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