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- Title
Development of Sustainable Artificial Stone Using Granite Waste and Biodegradable Polyurethane from Castor Oil.
- Authors
Gomes, Maria Luiza Pessanha Menezes; Carvalho, Elaine Aparecida Santos; Barreto, Gabriela Nunes Sales; Rodriguez, Rubén Jesus Sánchez; Monteiro, Sérgio Neves; Vieira, Carlos Maurício Fontes
- Abstract
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.
- Subjects
CASTOR oil; SUSTAINABLE development; POLYURETHANES; GRANITE; CHEMICAL resistance; BENDING strength
- Publication
Sustainability (2071-1050), 2022, Vol 14, Issue 11, p6380
- ISSN
2071-1050
- Publication type
Article
- DOI
10.3390/su14116380