期刊
CONSTRUCTION AND BUILDING MATERIALS
卷 195, 期 -, 页码 75-84出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.conbuildmat.2018.11.005
关键词
Alkali activated material; Fire resistance; Fly ash; Geopolymer; Passive fire protection; Thermal conductivity; Waste processing
Alkali activated lightweight mortars, obtained by room temperature activation of coal fly ash, were studied as passive fire protection systems for steel elements. Physical, mechanical and thermal properties were investigated as a function of the compositional Si/Al molar ratio and of the amount of lightweight aggregate and foaming agent. Experimental findings were used as input data to assess their fire resistance by finite volume simulations. Results pointed out that the optimized alkali activated lightweight mortars are able to outperform alternative commercial cement-based mortars, thus representing a promising technology. (C) 2018 Elsevier Ltd. All rights reserved.
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