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

Available on ORBi :

since 13 September 2021

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Bibliography

ASTM D4611-16. (2018). Standard test method for specific heat of rock and soil. ASTM International.
Atsonios, I. A., Mandilaras, I. D., Kontogeorgos, D. A., & Founti, M. A. (2017). A comparative assessment of the standardized methods for the in-situ measurement of the thermal resistance of building walls. Energy and Buildings, 154, 198-206.
Bellazzi, A., Barozzi, B., Pollastro, M. C., & Meroni, I. (2020). Thermal resistance of growing media for green roofs: To what extent does the absence of specific reference values potentially affect the global thermal resistance of the green roof? An experimental example. Journal of Building Engineering, 28, 101076.
Berndtsson, J. C., Emilsson, T., & Bengtsson, L. (2006). The influence of extensive vegetated roofs on runoff water quality. Science of the Total Environment, 355(1-3), 48-63.
Burch, D. M., & Chi, J. (1997). MOIST: A PC program for predicting heat and moisture transfer in buildingenvelopes. Release 3.0. NIST Special Publication, 917.
Cascone, S. (2019). Green Roof Design: State of the Art on Technology and Materials. Sustainability, 11(11), 3020. https://doi.org/10.3390/su11113020
Cascone, S., Catania, F., Gagliano, A., & Sciuto, G. (2018). A comprehensive study on green roof performance for retrofitting existing buildings. Building and Environment, 136, 227-239.
Chenani, S. B., Lehvävirta, S., & Häkkinen, T. (2015). Life cycle assessment of layers of green roofs. Journal of Cleaner Production, 90, 153-162.
Coma, J., Pérez, G., Castell, A., Solé, C., & Cabeza, L. F. (2014). Green roofs as passive system for energy savings in buildings during the cooling period: Use of rubber crumbs as drainage layer. Energy Efficiency, 7(5), 841-849.
Coma, J., Pérez, G., Solé, C., Castell, A., & Cabeza, L. F. (2016). Thermal assessment of extensive green roofs as passive tool for energy savings in buildings. Renewable Energy, 85, 1106-1115.
Delgado, J. M., Barreira, E., Ramos, N. M., & De Freitas, V. P. (2012). Hygrothermal numerical simulation tools applied to building physics. Springer Science & Business Media.
Desogus, G., Mura, S., & Ricciu, R. (2011). Comparing different approaches to in situ measurement of building components thermal resistance. Energy and Buildings, 43(10), 2613-2620.
Dvorak, B., & Volder, A. (2013). Rooftop temperature reduction from unirrigated modular green roofs in south-central Texas. Urban Forestry & Urban Greening, 12(1), 28-35.
EN 1015-19. (1999). Methods of test for mortar for masonry. Determination of water vapour permeability of hardened rendering and plastering mortars.
EN 1925. (1999). Natural stone test methods. Determination of water absorption coefficient by capillarity.
ISO 9869-1. (2014). 9869-1: 2014 Thermal insulation, Building elements, In-situ measurement of thermal resistance and thermal transmittance-Part 1: Heat flow meter method. London: BSI.
ISO 16586. (2003a). Soil quality-Determination of soil water content as a volume fraction on the basis of known dry bulk density-Gravimetric method. ISO. https://www.iso.org/cms/render/live/en/sites/isoorg/contents/data/standard/03/23/32317.html
ISO 16586. (2003b). Soil quality-Determination of soil water content as a volume fraction on the basis of known dry bulk density-Gravimetric method. ISO. https://www.iso.org/cms/render/live/en/sites/isoorg/contents/data/standard/03/23/32317.html
Jim, C. Y. (2014). Air-conditioning energy consumption due to green roofs with different building thermal insulation. Applied Energy, 128, 49-59.
Kazemi, M., & Courard, L. (2020). Modelling thermal and humidity transfers within green roof systems: Effect of rubber crumbs and volcanic gravel. Advances in Building Energy Research, 0(0), 1-26. https://doi.org/10.1080/17512549.2020.1858961
Kazemi, M., & Courard, L. (2021). Simulation of humidity and temperature distribution in green roof with pozzolana as drainage layer: Influence of outdoor seasonal weather conditions and internal ceiling temperature. Science and Technology for the Built Environment, 27(4), 509-523.
Kazemi, M., Hajforoush, M., Talebi, P. K., Daneshfar, M., Shokrgozar, A., Jahandari, S., Saberian, M., & Li, J. (2020). In-situ strength estimation of polypropylene fibre reinforced recycled aggregate concrete using Schmidt rebound hammer and point load test. Journal of Sustainable Cement-Based Materials, 1-18.
Krus, M. (1996). Moisture transport and storage coefficients of porous mineral building materials: Theoretical principles and new test methods. Fraunhofer IRB Verlag Stuttgart.
Künzel, H. M. (1994). Verfahren zur ein-und zweidimensionalen Berechnung des gekoppelten Wärme-und Feuchtetransports in Bauteilen mit einfachen Kennwerten [PhD Thesis]. Universität Stuttgart Stuttgart.
Ling, H., Chen, C., Qin, H., Wei, S., Lin, J., Li, N., Zhang, M., Yu, N., & Li, Y. (2016). Indicators evaluating thermal inertia performance of envelops with phase change material. Energy and Buildings, 122, 175-184.
Mickovski, S. B., Buss, K., McKenzie, B. M., & Sökmener, B. (2013). Laboratory study on the potential use of recycled inert construction waste material in the substrate mix for extensive green roofs. Ecological Engineering, 61, 706-714.
Nematzadeh, M., Shahmansouri, A. A., & Fakoor, M. (2020). Post-fire compressive strength of recycled PET aggregate concrete reinforced with steel fibers: Optimization and prediction via RSM and GEP. Construction and Building Materials, 252, 119057. https://doi.org/10.1016/j.conbuildmat.2020.119057
Rincón, L., Coma, J., Pérez, G., Castell, A., Boer, D., & Cabeza, L. F. (2014). Environmental performance of recycled rubber as drainage layer in extensive green roofs. A comparative Life Cycle Assessment. Building and Environment, 74, 22-30.
Rodler, A., Guernouti, S., & Musy, M. (2019). Bayesian inference method for in situ thermal conductivity and heat capacity identification: Comparison to ISO standard. Construction and Building Materials, 196, 574-593.
Saadatian, O., Sopian, K., Salleh, E., Lim, C. H., Riffat, S., Saadatian, E., Toudeshki, A., & Sulaiman, M. Y. (2013). A review of energy aspects of green roofs. Renewable and Sustainable Energy Reviews, 23, 155-168.
Sadeghian, F., Haddad, A., Jahandari, S., Rasekh, H., & Ozbakkaloglu, T. (2020). Effects of electrokinetic phenomena on the load-bearing capacity of different steel and concrete piles: A small-scale experimental study. Canadian Geotechnical Journal, ja.
Schafaczek, B., & Zirkelbach, D. (2013). Ermittlung von Materialeigenschaften und effektiven Übergangsparametern von Dachbegrünungen zur zuverlässigen Simulation der hygrothermischen Verhältnisse in und unter Gründächern bei beliebigen Nutzungen und unterschiedlichen Standorten:[Abschlussbericht]. Fraunhofer-IRB-Verlag.
Tabares-Velasco, P. C., Zhao, M., Peterson, N., Srebric, J., & Berghage, R. (2012). Validation of predictive heat and mass transfer green roof model with extensive green roof field data. Ecological Engineering, 47, 165-173.
TenWolde, A. (2011). A review of ASHRAE Standard 160-Criteria for moisture control design analysis in buildings. In Condensation in Exterior Building Wall Systems. ASTM International.
Uhl, M., & Schiedt, L. (2008). Green roof storm water retention-monitoring results. 11th International Conference on Urban Drainage, Edinburgh, UK, 31.
Vesuviano, G., & Stovin, V. (2013). A generic hydrological model for a green roof drainage layer. Water Science and Technology, 68(4), 769-775.
Vijayaraghavan, K., Joshi, U. M., & Balasubramanian, R. (2012). A field study to evaluate runoff quality from green roofs. Water Research, 46(4), 1337-1345.
Vijayaraghavan, Kuppusamy. (2016). Green roofs: A critical review on the role of components, benefits, limitations and trends. Renewable and Sustainable Energy Reviews, 57, 740-752.
Vila, A., Pérez, G., Solé, C., Fernández, A. I., & Cabeza, L. F. (2012). Use of recycled rubber from tires as drainage layer in green roofs. Building and Environment, 48, 101-106.
Wanielista, M., Kelly, M., & Hardin, M. (2008). A Comparative analysis of greenroof designs including depth of media, drainage layer materials, and pollution control media. Florida Department of Environmental Protection: Tallahassee, FL, USA.
Zirkelbach, D. (2017). Green roofs - hygrothermal simulation of moisture and energy performance. 6.
Zirkelbach, D., Mehra, S.-R., Sedlbauer, K.-P., Künzel, H.-M., & Stöckl, B. (2017). A hygrothermal green roof model to simulate moisture and energy performance of building components. Energy and Buildings, 145, 79-91.