Janssens, K;
Feng, C;
Marincioni, V;
Van der Bossche, N;
(2023)
A Dose-response Approach for Predicting Frost Damage with Hygrothermal Simulations.
In: Li, KF and Fang, DP, (eds.)
DBMC 2023:16th International Conference on Durability of Building Materials and Components.
(pp. pp. 1-9).
CIMNE: Barcelona, Spain.
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Abstract
Freeze-thaw degradation is one of the most prominent degradation risks of brick facades. Considering the difficulties of repairing freeze-thaw damage without replacing the materials, which may not always be an option due to heritage values, it is highly important to quantify the risk of frost damage in advance. Hygrothermal simulations have proven to be a valuable tool to assess the risk of deterioration of building facades. The performance criterion method generally applied today quantifies the number of critical freeze-thaw cycles (FTCcrit) as described by Mensinga et al (2010). This method is based on frost resistance tests that adopt high moisture contents and extremely low frost temperatures. However, building facades often experience milder frost temperatures and lower moisture contents rather than these extreme conditions. A journal article published by Feng et al. (2019) investigated the relationship of frost damage with temperature and moisture content, which enables a dose-response approach that goes beyond the existing threshold level criteria. The experimental study tested freezing temperatures from -2°C to -20°C and moisture saturation degrees from 0.1 to 1.0. This paper studies freeze-thaw risk using this advanced approach, and investigates whether the dose-response approach can lead to a clarification at what number of FTCcrit actual deterioration occurs and how this can be predicted by the use of hygrothermal simulations. Thereby, an attempt is made to derive a more representative performance criterion for frost damage.
| Type: | Proceedings paper |
|---|---|
| Title: | A Dose-response Approach for Predicting Frost Damage with Hygrothermal Simulations |
| Event: | 16th International Conference on Durability of Building Materials and Components (XVI DBMC) |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.23967/c.dbmc.2023.075 |
| Publisher version: | https://doi.org/10.23967/c.dbmc.2023.075 |
| Language: | English |
| Additional information: | This is an Open Access article published under CC BY-NC-SA license (https://creativecommons.org/licenses/by-nc-sa/3.0/deed.en). |
| Keywords: | Frost Damage, Hygrothermal Simulations, Freeze-thaw Cycle, HAM. |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of the Built Environment UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of the Built Environment > Bartlett School Env, Energy and Resources |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10182817 |
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