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Publication . Article . Conference object . 2021

Hygrothermal Analysis of CLT-Based Retrofit Strategy of Existing Wall Assemblies According to EN 13788 Standard

Vincenzo Costanzo; Gianpiero Evola; Antonio Gagliano; Luigi Marletta; Francesco Nocera;
Open Access  
Published: 08 Jul 2021 Journal: TECNICA ITALIANA-Italian Journal of Engineering Science, volume 65, pages 324-329 (issn: 0040-1846, Copyright policy )
Publisher: International Information and Engineering Technology Association
Country: Italy
Abstract
In the framework of the ongoing EU-funded innovation project called e-SAFE (energy and Seismic Affordable rEnovation solutions), several solutions for the energy and seismic deep renovation of reinforced-concrete (RC) framed buildings in the EU countries are going to be developed and demonstrated. One of these solutions makes use of cross laminated timber (CLT) panels connected to the existing RC frame through specifically designed dampers to increase the seismic and energy performances of the existing envelope. This paper aims to preliminary assess the hygrothermal performance of such CLT panels when applied to various typical wall structures under different climate conditions in Italy through numerical simulations carried out according to the EN 13788 Standard and considering various indoor vapor production classes. Results show that the most problematic existing wall structures are uninsulated concrete walls, for which a risk of surface condensation and mold growth is predicted in all climate zones because of their low thermal resistance (U-value of 3.55 W·m-2·K-1), followed by uninsulated solid brick walls (U-value of 1.81 W·m-2·K-1). The application of CLT panels is found to not only significantly improve the thermal behaviour of the walls, but also to eliminate any surface and interstitial condensation issues in all climate zones.
This file corresponds to the pre-print of the final Conference paper
Subjects

General Engineering, CLT panels, EN 13788 Standard, Hygrothermal analysis, Walls retrofit solutions

Related Organizations
Funded by
EC| e-SAFE
Project
e-SAFE
Energy and Seismic AFfordable rEnovation solutions
  • Funder: European Commission (EC)
  • Project Code: 893135
  • Funding stream: H2020 | IA