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Article

Development of Sustainable Artificial Stone Using Granite Waste and Biodegradable Polyurethane from Castor Oil

1
Advanced Materials Laboratory—LAMAV, State University of the Northern Rio de Janeiro—UENF, Av. Alberto Lamego 2000, Campos dos Goytacazes 28013-602, Brazil
2
Department of Materials Science, Military Engineering Intitute—IME, Praça General Tibúrcio 80, Praia Vermelha, Urca, Rio de Janeiro 22290-270, Brazil
*
Author to whom correspondence should be addressed.
Academic Editor: Miguel Bravo
Sustainability 2022, 14(11), 6380; https://doi.org/10.3390/su14116380
Received: 1 April 2022 / Revised: 26 April 2022 / Accepted: 9 May 2022 / Published: 24 May 2022
Brazil is one of the world’s major ornamental stone producers. As a consequence, ornamental stone wastes are generated on a large scale and are usually open air disposed. Thus, it is important to develop novel material reusing these accumulated wastes, aiming to minimize environmental impact. The development of artificial stones made with ornamental stone wastes agglomerated by a synthetic polymer represents an excellent alternative and, therefore, is currently the subject of several works. This work seeks to develop an innovative artificial stone containing 85%wt of granite waste and 15%wt of vegetable polyurethane from castor oil, a biodegradable resin, from a renewable source. The purpose is creating a sustainable material, technically viable to be applied as a civil construction coating. To manufacture the artificial stone plates, granite and polyurethane were mixed and transferred to a metallic mold subjected to vibration, vacuum and, later, hot compression. The artificial stone presented low water absorption (0.13%) and apparent porosity (0.31%) as well as a favorable 17.31 MPa bend strength. These results were confirmed through the excellent particles/matrix adhesion displayed in the micrographs, in addition to great chemical resistance. View Full-Text
Keywords: artificial stone; vegetable polyurethane; granite waste artificial stone; vegetable polyurethane; granite waste
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MDPI and ACS Style

Gomes, M.L.P.M.; Carvalho, E.A.S.; Barreto, G.N.S.; Rodriguez, R.J.S.; Monteiro, S.N.; Vieira, C.M.F. Development of Sustainable Artificial Stone Using Granite Waste and Biodegradable Polyurethane from Castor Oil. Sustainability 2022, 14, 6380. https://doi.org/10.3390/su14116380

AMA Style

Gomes MLPM, Carvalho EAS, Barreto GNS, Rodriguez RJS, Monteiro SN, Vieira CMF. Development of Sustainable Artificial Stone Using Granite Waste and Biodegradable Polyurethane from Castor Oil. Sustainability. 2022; 14(11):6380. https://doi.org/10.3390/su14116380

Chicago/Turabian Style

Gomes, Maria L.P.M., Elaine A.S. Carvalho, Gabriela N.S. Barreto, Rubén J.S. Rodriguez, Sérgio N. Monteiro, and Carlos M.F. Vieira. 2022. "Development of Sustainable Artificial Stone Using Granite Waste and Biodegradable Polyurethane from Castor Oil" Sustainability 14, no. 11: 6380. https://doi.org/10.3390/su14116380

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