Risk assessment of joint sealing tape in joints between precast concrete sandwich panels resilient to climate change
Journal article, 2021

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.

Moisture safety

Driving rain

Precast concrete

New technical solutions

Joint sealing tape

Risk assessment

Climate change

Author

Charlotte Svensson Tengberg

Chalmers, Architecture and Civil Engineering, Building Technology

Lars Olsson

RISE Research Institutes of Sweden

Carl-Eric Hagentoft

Chalmers, Architecture and Civil Engineering, Building Technology

Buildings

20755309 (eISSN)

Vol. 11 8 343

Metodikutveckling för undvikande av serieskador

Development Fund of the Swedish Construction Industry (SBUF) (13535), 2018-05-01 -- 2020-02-29.

Subject Categories

Production Engineering, Human Work Science and Ergonomics

Other Civil Engineering

Building Technologies

DOI

10.3390/buildings11080343

More information

Latest update

9/13/2021