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Title of Journal: J Cent South Univ

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Abbravation: Journal of Central South University

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Central South University

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DOI

10.1007/978-94-011-3696-9_10

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2227-5223

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Strength and thermal behavior of low weight foam g

Authors: Ze Liu Ningning Shao Junfeng Qin Fanlong Kong Chunxue Wang Dongmin Wang
Publish Date: 2015/09/08
Volume: 22, Issue: 9, Pages: 3633-3640
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Abstract

A comparative study of the influence of elevated temperature on foam geopolymer using circulating fluidized bed combustion fly ash CFA was reported Foam geopoymers were prepared with different amounts of foam agent and different SiO2/Al2O3 molar ratios of 31 34 and 38 The mechanical thermophysical properties and microstructure of the foam geopolymers before and after exposure to elevated temperature of 800 1000 and 1200 °C were investigated The specimen with SiO2/Al2O3 molar ratio of 38 exhibits the highest compressive strength better microstructure and dimension stability before and after firing Carnegeite nepheline and zeolite crystalline phases appearing after exposure may contribute to the good postexposure strength Low weight foam geopolymer using CFA can increase strength and maintain higher stability as high as 1000 °C

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