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Buildings 2018, 8(10), 139; https://doi.org/10.3390/buildings8100139

The Laboratory Definition of the Thermal Resistance of Growing Media for Green Roofs: New Experimental Setups

Construction Technologies Institute of National Research Council of Italy, Via Lombardia 49, San Giuliano Milanese, 20098 Milan, Italy
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Received: 9 August 2018 / Revised: 27 September 2018 / Accepted: 29 September 2018 / Published: 3 October 2018
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Abstract

Green roofs are one of the most extensively investigated roofing technologies. Most of the bibliographical studies show results of researches focused on the analysis of different configurations of green roofs, but only few researches deal with the calculation of the growing media thermal resistance using laboratory tests. From 2009 to 2013, ITC-CNR, the Construction Technologies Institute of the National Research Council of Italy, carried out a first laboratory experimental campaign focused on the definition of thermal performances curves of growing media for green roofs as a function of both density and percentage of internal moisture. During this campaign, the experimental results underlined some existing gaps, such as the absence of specific standards concerning the sample laboratory preparation, the absence of shared references concerning the compaction level reached by samples in real working conditions and the evaluation of the internal moisture content of growing media exposed to atmospheric agents. For this reason, the ITC-CNR has set up a second experimental campaign focused on the solution of the gaps underlined by the first phase concerning the preparation of samples for the laboratory calculation of the thermal resistance of growing media for green roofs. This paper proposes and presents methodological approaches, methods and new test devices implemented to solve these gaps, and the results obtained. View Full-Text
Keywords: green roofs; natural compaction of growing media; laboratory compaction of growing media; internal moisture content green roofs; natural compaction of growing media; laboratory compaction of growing media; internal moisture content
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Barozzi, B.; Bellazzi, A.; Maffè, C.; Meroni, I. The Laboratory Definition of the Thermal Resistance of Growing Media for Green Roofs: New Experimental Setups. Buildings 2018, 8, 139.

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