Drying brick masonry by electro-osmosis

Lisbeth M. Ottosen; Inge Rörig-Dalgaard

Drying brick masonry by electro-osmosis

Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

Abstract

When a fine grained, porous medium is applied an electric DC field, transport of matter occurs, and the transport mechanism in focus of the present study is electro-osmosis, which is transport of water. In laboratory it was shown possible to transport water inside a brick and brick/mortar system in an applied electric field. Electrodes have been constructed and placed inside an old house with moisture problems from capillary rise of water. The water content of the experimental wall was about 14%(weight). The electro-osmotic effect was even more pronounced here than in the in the laboratory, and a clear movement of water towards the cathode was seen. Thus the basis for utilizing the electro-osmotic effect for drying brick masonry is present, but proper electrodes still needs to be developed.

Original language	English
Title of host publication	“Masonry (10)”, Proceedings of the Seventh International Masonry Conference
Volume	CD rom
Place of Publication	British Masonry Society
Publisher	British Masonry Society
Publication date	2006
Publication status	Published - 2006
Event	7th International Masonry Conference - London, United Kingdom Duration: 30 Oct 2006 → 1 Nov 2006 Conference number: 7 http://www.masonry.org.uk/masonry/events/events_archive/7th_international_masonry_conference_2006_7imc

Conference

Conference	7th International Masonry Conference
Number	7
Country/Territory	United Kingdom
City	London
Period	30/10/2006 → 01/11/2006
Internet address	http://www.masonry.org.uk/masonry/events/events_archive/7th_international_masonry_conference_2006_7imc

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@inproceedings{19ebbb64aee445cda5e12ef41db3985a,

title = "Drying brick masonry by electro-osmosis",

abstract = "When a fine grained, porous medium is applied an electric DC field, transport of matter occurs, and the transport mechanism in focus of the present study is electro-osmosis, which is transport of water. In laboratory it was shown possible to transport water inside a brick and brick/mortar system in an applied electric field. Electrodes have been constructed and placed inside an old house with moisture problems from capillary rise of water. The water content of the experimental wall was about 14\%(weight). The electro-osmotic effect was even more pronounced here than in the in the laboratory, and a clear movement of water towards the cathode was seen. Thus the basis for utilizing the electro-osmotic effect for drying brick masonry is present, but proper electrodes still needs to be developed.",

author = "Ottosen, \{Lisbeth M.\} and Inge R{\"o}rig-Dalgaard",

year = "2006",

language = "English",

volume = "CD rom",

booktitle = "“Masonry (10)”, Proceedings of the Seventh International Masonry Conference",

publisher = "British Masonry Society",

note = "7th International Masonry Conference, 7IMC ; Conference date: 30-10-2006 Through 01-11-2006",

url = "http://www.masonry.org.uk/masonry/events/events\_archive/7th\_international\_masonry\_conference\_2006\_7imc",

}

TY - GEN

T1 - Drying brick masonry by electro-osmosis

AU - Ottosen, Lisbeth M.

AU - Rörig-Dalgaard, Inge

N1 - Conference code: 7

PY - 2006

Y1 - 2006

N2 - When a fine grained, porous medium is applied an electric DC field, transport of matter occurs, and the transport mechanism in focus of the present study is electro-osmosis, which is transport of water. In laboratory it was shown possible to transport water inside a brick and brick/mortar system in an applied electric field. Electrodes have been constructed and placed inside an old house with moisture problems from capillary rise of water. The water content of the experimental wall was about 14%(weight). The electro-osmotic effect was even more pronounced here than in the in the laboratory, and a clear movement of water towards the cathode was seen. Thus the basis for utilizing the electro-osmotic effect for drying brick masonry is present, but proper electrodes still needs to be developed.

AB - When a fine grained, porous medium is applied an electric DC field, transport of matter occurs, and the transport mechanism in focus of the present study is electro-osmosis, which is transport of water. In laboratory it was shown possible to transport water inside a brick and brick/mortar system in an applied electric field. Electrodes have been constructed and placed inside an old house with moisture problems from capillary rise of water. The water content of the experimental wall was about 14%(weight). The electro-osmotic effect was even more pronounced here than in the in the laboratory, and a clear movement of water towards the cathode was seen. Thus the basis for utilizing the electro-osmotic effect for drying brick masonry is present, but proper electrodes still needs to be developed.

M3 - Article in proceedings

VL - CD rom

BT - “Masonry (10)”, Proceedings of the Seventh International Masonry Conference

PB - British Masonry Society

CY - British Masonry Society

T2 - 7th International Masonry Conference

Y2 - 30 October 2006 through 1 November 2006

ER -

Drying brick masonry by electro-osmosis

Abstract

Conference

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