Hygric properties of hydrophobized building materials

Vasilis Soulios; Ernst Jan de Place Hansen; Hans Janssen

doi:10.1051/matecconf/201928202048

Hygric properties of hydrophobized building materials

Vasilis Soulios^*, Ernst Jan de Place Hansen, Hans Janssen

^*Corresponding author for this work

Research output: Contribution to book/anthology/report/conference proceeding › Article in proceeding › Research › peer-review

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Abstract

Moisture loads due to wind-driven rain can lead to accelerated decay of exposed building façades. Hydrophobic impregnation reduces water absorption of facade materials and is thus presumed to decrease moisture related damages. Hydrophobic impregnation however also lowers the drying speed of the exposed facade, leaving mainly water vapour transfer to take place. This study examines the open porosity and capillary absorption coefficient of impregnated brick samples as well as the effect of hydrophobic impregnation on the vapour permeability of brick and mortar samples. The open porosity was measured with vacuum saturation test, the absorption coefficient was determined by water uptake tests, both done after one month of curing of the impregnated brick samples. The vapour permeability was derived from cup tests and from drying tests. The resulting open porosity from brick samples indicates that the changes in the overall pore structure are minimal after impregnation. In addition, the absorption coefficient of brick was found to be fairly close to zero, even with low concentrations of active ingredient, and regardless the percentage of silane/siloxane. Our findings support the claim that the hydrophobic impregnation does not influence significantly the water vapour permeability of brick and mortar

Original language	English
Title of host publication	4th Central European Symposium on Building Physics (CESBP 2019) : Prague, Czech Republic, September 2-5, 2019
Editors	R. Černý, J. Kočí , V. Kočí
Number of pages	6
Publisher	EDP Sciences
Publication date	6 Sept 2019
Pages	1-6
Article number	02048
DOIs	https://doi.org/10.1051/matecconf/201928202048
Publication status	Published - 6 Sept 2019
Event	4th Central European Symposium on Building Physics 2019 - Czech Technical University in Prague, Prague, Czech Republic Duration: 2 Sept 2019 → 5 Sept 2019 https://www.cesbp2019.org/

Conference

Conference	4th Central European Symposium on Building Physics 2019
Location	Czech Technical University in Prague
Country/Territory	Czech Republic
City	Prague
Period	02/09/2019 → 05/09/2019
Internet address	https://www.cesbp2019.org/

Series	MATEC Web of Conferences
Volume	282
ISSN	2261-236X

Access to Document

10.1051/matecconf/201928202048Licence: CC BY 4.0

Open Access versionFinal published version, 2.03 MBLicence: CC BY 4.0

AUB Link

Search for the material in Aalborg University Library's search engine

1 Finished

Moisture-proof energy renovation of conservation-worthy exterior masonry walls
Peuhkuri, R. H. (Project Manager), de Place Hansen, E. J. (Project Participant), Soulios, V. (Project Participant), Hansen, T. K. (Project Participant), Jensen, N. F. (Project Participant), Møller, E. B. (Project Participant), Pagoni, P. (Project Participant), Ørsager, M. (Project Participant) & Møller, P. (Project Participant)
01/10/2017 → 30/06/2024
Project: Research

1 Conference organisation or participation

4th Central European Symposium on Building Physics 2019
de Place Hansen, E. J. (Participant)
2 Sept 2019 → 5 Sept 2019
Activity: Attending an event › Conference organisation or participation

1 PhD thesis

Hygrothermal Performance of Hydrophobized Brick and Mortar: Energy Renovation Through Internal Insulation - Can Hydrophobization Improve the Moisture Safety?
Soulios, V., 2021, Aalborg Universitetsforlag. 74 p.
Research output: PhD thesis

Open Access
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295 Downloads (Pure)

Cite this

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title = "Hygric properties of hydrophobized building materials",

abstract = "Moisture loads due to wind-driven rain can lead to accelerated decay of exposed building fa{\c c}ades. Hydrophobic impregnation reduces water absorption of facade materials and is thus presumed to decrease moisture related damages. Hydrophobic impregnation however also lowers the drying speed of the exposed facade, leaving mainly water vapour transfer to take place. This study examines the open porosity and capillary absorption coefficient of impregnated brick samples as well as the effect of hydrophobic impregnation on the vapour permeability of brick and mortar samples. The open porosity was measured with vacuum saturation test, the absorption coefficient was determined by water uptake tests, both done after one month of curing of the impregnated brick samples. The vapour permeability was derived from cup tests and from drying tests. The resulting open porosity from brick samples indicates that the changes in the overall pore structure are minimal after impregnation. In addition, the absorption coefficient of brick was found to be fairly close to zero, even with low concentrations of active ingredient, and regardless the percentage of silane/siloxane. Our findings support the claim that the hydrophobic impregnation does not influence significantly the water vapour permeability of brick and mortar",

author = "Vasilis Soulios and {de Place Hansen}, {Ernst Jan} and Hans Janssen",

year = "2019",

month = sep,

day = "6",

doi = "10.1051/matecconf/201928202048",

language = "English",

series = "MATEC Web of Conferences",

publisher = "EDP Sciences",

pages = "1--6",

editor = "{ {\v C}ern{\'y}}, R. and {Ko{\v c}{\'i} }, J. and {Ko{\v c}{\'i} }, V.",

booktitle = "4th Central European Symposium on Building Physics (CESBP 2019)",

address = "France",

note = "4th Central European Symposium on Building Physics 2019 ; Conference date: 02-09-2019 Through 05-09-2019",

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Soulios, V, de Place Hansen, EJ & Janssen, H 2019, Hygric properties of hydrophobized building materials. in R Černý, J Kočí & V Kočí (eds), 4th Central European Symposium on Building Physics (CESBP 2019): Prague, Czech Republic, September 2-5, 2019., 02048, EDP Sciences, MATEC Web of Conferences, vol. 282, pp. 1-6, 4th Central European Symposium on Building Physics 2019, Prague, Czech Republic, 02/09/2019. https://doi.org/10.1051/matecconf/201928202048

Hygric properties of hydrophobized building materials. / Soulios, Vasilis; de Place Hansen, Ernst Jan; Janssen, Hans.
4th Central European Symposium on Building Physics (CESBP 2019): Prague, Czech Republic, September 2-5, 2019. ed. / R. Černý; J. Kočí ; V. Kočí . EDP Sciences, 2019. p. 1-6 02048 (MATEC Web of Conferences, Vol. 282).

Research output: Contribution to book/anthology/report/conference proceeding › Article in proceeding › Research › peer-review

TY - GEN

T1 - Hygric properties of hydrophobized building materials

AU - Soulios, Vasilis

AU - de Place Hansen, Ernst Jan

AU - Janssen, Hans

PY - 2019/9/6

Y1 - 2019/9/6

N2 - Moisture loads due to wind-driven rain can lead to accelerated decay of exposed building façades. Hydrophobic impregnation reduces water absorption of facade materials and is thus presumed to decrease moisture related damages. Hydrophobic impregnation however also lowers the drying speed of the exposed facade, leaving mainly water vapour transfer to take place. This study examines the open porosity and capillary absorption coefficient of impregnated brick samples as well as the effect of hydrophobic impregnation on the vapour permeability of brick and mortar samples. The open porosity was measured with vacuum saturation test, the absorption coefficient was determined by water uptake tests, both done after one month of curing of the impregnated brick samples. The vapour permeability was derived from cup tests and from drying tests. The resulting open porosity from brick samples indicates that the changes in the overall pore structure are minimal after impregnation. In addition, the absorption coefficient of brick was found to be fairly close to zero, even with low concentrations of active ingredient, and regardless the percentage of silane/siloxane. Our findings support the claim that the hydrophobic impregnation does not influence significantly the water vapour permeability of brick and mortar

AB - Moisture loads due to wind-driven rain can lead to accelerated decay of exposed building façades. Hydrophobic impregnation reduces water absorption of facade materials and is thus presumed to decrease moisture related damages. Hydrophobic impregnation however also lowers the drying speed of the exposed facade, leaving mainly water vapour transfer to take place. This study examines the open porosity and capillary absorption coefficient of impregnated brick samples as well as the effect of hydrophobic impregnation on the vapour permeability of brick and mortar samples. The open porosity was measured with vacuum saturation test, the absorption coefficient was determined by water uptake tests, both done after one month of curing of the impregnated brick samples. The vapour permeability was derived from cup tests and from drying tests. The resulting open porosity from brick samples indicates that the changes in the overall pore structure are minimal after impregnation. In addition, the absorption coefficient of brick was found to be fairly close to zero, even with low concentrations of active ingredient, and regardless the percentage of silane/siloxane. Our findings support the claim that the hydrophobic impregnation does not influence significantly the water vapour permeability of brick and mortar

U2 - 10.1051/matecconf/201928202048

DO - 10.1051/matecconf/201928202048

M3 - Article in proceeding

T3 - MATEC Web of Conferences

SP - 1

EP - 6

BT - 4th Central European Symposium on Building Physics (CESBP 2019)

A2 - Černý, R.

A2 - Kočí , J.

A2 - Kočí , V.

PB - EDP Sciences

T2 - 4th Central European Symposium on Building Physics 2019

Y2 - 2 September 2019 through 5 September 2019

ER -

Hygric properties of hydrophobized building materials

Abstract

Conference

Access to Document

AUB Link

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Projects

Moisture-proof energy renovation of conservation-worthy exterior masonry walls

Activities

4th Central European Symposium on Building Physics 2019

Research output

Hygrothermal Performance of Hydrophobized Brick and Mortar: Energy Renovation Through Internal Insulation - Can Hydrophobization Improve the Moisture Safety?

Cite this