Composite Mortars Produced with Wood Waste from Demolition: Assessment of New Compounds with Enhanced Thermal Properties
Publication: Journal of Materials in Civil Engineering
Volume 30, Issue 2
Abstract
In this study, wood waste from demolition was used by replacing natural aggregate for developing lightweight mortars. Many domestic buildings in the historical city centers of Spain have wooden floors and roof structures. Their rehabilitation process produces a large amount of waste, including wood waste. In this study, the wood waste, wood shavings, and sawdust were tested in ratios of 2.5, 5, 10, and 20% by weight of sand. Mortars containing wood were characterized in fresh and hardened states by means of their consistency and bulk density (fresh state) and mechanical tests, bulk density, water absorption by capillarity, vapor permeability, and thermal behavior (hardened state). The results showed that increasing the amount of waste hinders the workability of the sample and prolongs setting times. Furthermore, compounds with larger-sized particles, those based on wood shavings, showed a more pronounced decrease in density and produced the best thermal results. Finally, contrary to what one might expect, the wood-shavings compounds also presented better mechanical properties.
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Acknowledgments
This research has been supported by the Ministry of Economy and Competitiveness of Spain (Reference No. BIA2013-43061-R). The author Mª Jesús Morales–Conde acknowledges the financial support of the V Research Plan of the University of Seville.
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Published In
Journal of Materials in Civil Engineering
Volume 30 • Issue 2 • February 2018
Copyright
©2017 American Society of Civil Engineers.
History
Received: Apr 12, 2017
Accepted: Jul 31, 2017
Published online: Nov 25, 2017
Published in print: Feb 1, 2018
Discussion open until: Apr 25, 2018
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