Study on EPS thermal insulation mortar prepared by magnesium oxychloride cement

Shiming Huang,Dehui Lu,Yanli Zhang,Ruying Zhao,Wen Zhu,G Yang,M Ziegler

doi:10.1051/e3sconf/202019801016

Shiming Huang, Dehui Lu + Show 5 more

Open Access

https://doi.org/10.1051/e3sconf/202019801016

Copy DOI

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.

Highlights

IntroductionPolystyrene (EPS) particles are manufactured from waste chloride aqueous solution)/m(H2O) was 7.41/5.09/1 as the matrix of magnesium oxychloride cement, and EPS polystyrene plastics
In this paper, the mass ratio m(MgO)/m(magnesiumPolystyrene (EPS) particles are manufactured from waste chloride aqueous solution)/m(H2O) was 7.41/5.09/1 as the matrix of magnesium oxychloride cement, and EPS polystyrene plastics
The thermal conductivity was measured by the heat flow method thermal conductivity analyzer (HFM), and the sample was poured with size of 300 mm × 300 mm × 25 mm

Summary

Introduction

Polystyrene (EPS) particles are manufactured from waste chloride aqueous solution)/m(H2O) was 7.41/5.09/1 as the matrix of magnesium oxychloride cement, and EPS polystyrene plastics. Due to the characteristics of light particles were mixed to prepare composite thermal weight, low thermal conductivity, low water absorption, insulation mortar. The influence of EPS content on good thermal insulation effect, and crack resistance, EPS mechanical strength, density and thermal conductivity of particles are usually used to replace traditional inorganic thermal insulation mortar were studied. The effect aggregates to make light-weight thermal insulation of fly ash on the density and thermal conductivity of materials. EPS materials is flammable in fire thermal insulation mortar with the EPS particles content with the droplet phenomenon, which will intensify the of 0.486 % were studied.

Methods

Results

Conclusion