Hygrothermal Modeling of Green Roof Made with Substrate and Drainage Layers of Coarse Recycled Materials

[en] The thermal performance of an extensive green roof can be influenced by the initial hygrothermal conditions of substrate and drainage layers. Moreover, coarse recycled materials can affect the thermal resistance of green roof layers, while there is a demand for optimizing their thickness. Therefore, the main objective of this study is to optimize the thickness of green roof layers, once coarse recycled materials were used for substrate and drainage layers: WUFI software has been used for such application, which was suitable for modeling the initial hygrothermal conditions (heat and moisture properties) of green roof layers. According to the results, Rc-value for the green roof without coarse recycled materials was found slightly higher than that of the specimen with coarse recycled materials (4.1%), indicating nearly the same thermal resistance of the former and the latter. The green roof model with 15-cm substrate and 6-cm drainage layer can be regarded as the best appropriate system concerning their better thermal resistance and lower weight.

Disciplines :

Civil engineering

Author, co-author :

Kazemi, Mostafa ; Université de Liège - ULiège > Département ArGEnCo > Département ArGEnCo

Courard, Luc ; Université de Liège - ULiège > Département ArGEnCo > Matériaux de construction non métalliques du génie civil

Attia, Shady ; Université de Liège - ULiège > Département ArGEnCo > Techniques de construction des bâtiments

Language :

English

Title :

Hygrothermal Modeling of Green Roof Made with Substrate and Drainage Layers of Coarse Recycled Materials

Publication date :

2021

Event name :

Building Simulation 2021 Conference

Event organizer :

International Building Performance Simulation Association

Event place :

Bruges, Belgium

Event date :

1-3 September 2021

By request :

Yes

Audience :

International

Main work title :

Proceeding of the International Building Simulation Conference

Publisher :

KU Leuven, Leuven, Belgium

Peer reviewed :

Peer reviewed

Funders :

ULiège - Université de Liège [BE]

Available on ORBi :

since 13 September 2021

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