期刊
MATERIALS & DESIGN
卷 85, 期 -, 页码 266-274出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.matdes.2015.06.145
关键词
Lightvveight inorganic composites; Geopolymer; Expanded vermiculite; Thermal properties; Thermal conductivity
资金
- Ministry of Economic Development of Italy
The production and the properties of lightweight composite panels, with expanded vermiculite as lightweight aggregate and geopolymer as binder, were investigated. Different compositions of the geopolymer binders (metakaolin or alumina-based) and two sizes of expanded vermiculite were tested. The produced composites were subjected to microstructural analyses, as well as to thermal and mechanical tests. Densities ranged between 700 and 900 kg m(3) while the average strength and thermal conductivity were about 2 MPa and 0.2 W. respectively. Results show that lightweight composites can be produced with satisfactory density and mechanical and thermal properties compared with other materials used in building sector, such as plasterboard or cellular concrete. (C) 2015 Elsevier Ltd. All rights reserved.
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