Study on EPS thermal insulation mortar prepared by magnesium oxychloride cement

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Study on EPS thermal insulation mortar prepared by magnesium oxychloride cement

Authors
  • Huang, Shiming1
  • Zhu, Wen1
  • Zhang, Yanli1
  • Lu, Dehui2
  • Zhao, Ruying1
  • 1 1
  • 2 2
Type
Published Article
Journal
E3S Web of Conferences
Publisher
EDP Sciences
Publication Date
Oct 26, 2020
Volume
198
Identifiers
DOI: 10.1051/e3sconf/202019801016
Source
EDP Sciences
License
Green
External links

Abstract

In this paper, a composite thermal insulation mortar was prepared with magnesium oxychloride cement and polystyrene (EPS) particles. The influence of EPS particles content on the mechanical strength, density and thermal conductivity of composite thermal insulation mortar was studied. Also, the effect of fly ash on the density and thermal conductivity of the mortar was researched. It was shown that: (1) Generally, EPS particles could reduce the compressive strength, flexural strength, density and thermal conductivity of the mortar. The 28 days compressive strength and 28 days flexural strength decreased by 93.3 % and 81.3 % respectively, with the content of EPS particles from 0 % to 0.486 %. Also the density of the mortar was reduced from 2043 g/dm3 to 805 g/dm3, and the thermal conductivity was fell from 0.4093 W/(m·K) to 0.2191 W/(m·K). (2) Small amounts (less than 5.487 %) of fly ash could increase the density and thermal conductivity. However, when the content of fly ash was more than 5.487 %, the density and thermal conductivity of thermal insulation mortar were significantly reduced.

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