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The Impact of Wind-Driven Rain on Surface Waterproofed Brick Cavity Walls

D'Ayala, D; Zhu, H; Aktas, Yasemin; (2024) The Impact of Wind-Driven Rain on Surface Waterproofed Brick Cavity Walls. Building , 14 (2) , Article 447. 10.3390/buildings14020447. Green open access

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Abstract

settingsOrder Article Reprints Open AccessArticle The Impact of Wind-Driven Rain on Surface Waterproofed Brick Cavity Walls by Dina D’Ayala *,Hengrui Zhu andYasemin AktasORCID Department of Civil Environmental Geomatic Engineering, University College London, London WC1E 6BT, UK * Author to whom correspondence should be addressed. Buildings 2024, 14(2), 447; https://doi.org/10.3390/buildings14020447 Submission received: 28 December 2023 / Revised: 1 February 2024 / Accepted: 3 February 2024 / Published: 6 February 2024 (This article belongs to the Section Building Materials, and Repair & Renovation) Downloadkeyboard_arrow_down Browse Figures Versions Notes Abstract Moisture ingress is a major cause of damage to masonry cavity walls. Products of various chemical compositions are available for wall surface treatment, aimed at reducing/eliminating water ingress. This study presents the results of full-scale wall tests designed to quantify water absorption into uninsulated and insulated brick masonry cavity walls exposed to wind-driven rain (WDR) with and without surface waterproofing. Two different waterproofing products were used: acrylic and silane–siloxane mixture. Untreated and treated walls were exposed to cycles consisting of 10 min wetting at 2.25 L/m2·min every 60 min. The results show that both treatments lead to a reduction in water ingress ranging from 90% to 97%. However, while a more consistent performance was obtained for the silane/siloxane-treated walls under repeated exposure, the results for the acrylic treatment were dominated by the original wall conditions, improved with a reapplication of the treatment. The testing protocol proposed in this study is effective in determining the performance of waterproofing treatments exposed to different levels of WDR. Both treatments prove to be effective in preventing moisture uptake in walls in moderate WDR exposure conditions, while in extreme WDR exposure conditions, the acrylic treatment is less effective.

Type: Article
Title: The Impact of Wind-Driven Rain on Surface Waterproofed Brick Cavity Walls
Open access status: An open access version is available from UCL Discovery
DOI: 10.3390/buildings14020447
Publisher version: https://doi.org/10.3390/buildings14020447
Language: English
Additional information: © 2024 by the Authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
Keywords: waterproofing; water repellence; surface treatment; brick masonry; wind-driven rain (WDR); absorption; cavity wall construction; insulation
UCL classification: UCL
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Civil, Environ and Geomatic Eng
URI: https://discovery.ucl.ac.uk/id/eprint/10186997
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