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Risk assessment of joint sealing tape in joints between precast concrete sandwich panels resilient to climate change
Chalmers University of Technology, Sweden.
RISE Research Institutes of Sweden, Built Environment, Building and Real Estate.ORCID iD: 0000-0003-4211-4885
Chalmers University of Technology, Sweden.
2021 (English)In: Buildings, E-ISSN 2075-5309, Vol. 11, no 8, article id 343Article in journal (Refereed) Published
Abstract [en]

Lately, a new technical solution, pre-compressed joint sealing tapes in precast concrete sandwich panel facades, has been introduced in Sweden. Although the consequences of performance failure can go far beyond the component, affecting the building, the introduction has gained little attention in terms of risk assessment in the literature and in industry. Instead, reference cases are used as verification without formal evaluation, potentially leading to serial failure. The aim of this paper was to provide guidance on how a design–build contractor should handle this new technical solution. A risk assessment framework using a design–build contractor’s perspective was applied to the case. The framework addresses new technical solutions or adaption to new conditions (e.g., climate change) with the aim of preventing serial failures. Moisture conditions within the joints were simulated using present and future climates, and probabilities of failure were assessed using the Monte Carlo method. The results of the study included identified risks of failure associated with the solution and factors influencing the probability of failure. A main issue was the exposure of the facade to driving rain but also run-off areas and imperfections in the application of the joint sealing tape. Future climate changes affect performance negatively. In conclusion, the new technical solution might be possible to use if draining potential is ensured in all detailed designs and a set of recommendations, including full-scale testing, is provided for the design–build contractor. © 2021 by the authors.

Place, publisher, year, edition, pages
MDPI AG , 2021. Vol. 11, no 8, article id 343
Keywords [en]
Climate change, Driving rain, Joint sealing tape, Moisture safety, New technical solutions, Precast concrete, Risk assessment
National Category
Building Technologies
Identifiers
URN: urn:nbn:se:ri:diva-56698DOI: 10.3390/buildings11080343Scopus ID: 2-s2.0-85113737036OAI: oai:DiVA.org:ri-56698DiVA, id: diva2:1601363
Note

Funding details: 13535, 13818; Funding text 1: Funding: The work is partly funded by SBUF, the Swedish Construction industry’s organization for research and development: grant number 13535 and 13818.

Available from: 2021-10-07 Created: 2021-10-07 Last updated: 2024-01-17Bibliographically approved

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Olsson, Lars

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