Effects of EPS Particles on Properties of Ultra-Light Cement-Based Composite Thermal Insulation Materials

Abstract

Abstract: EPS particles as the ultra-light aggregate of cement-based composite thermal insulation materials have a significant effect on the mechanical and thermal properties of cement-based composite thermal insulation materials. In this paper, the cement as cementing material, EPS particles, mixes, foams and modifiers, water and other as the main raw materials,ultra-light cement-based composite thermal insulation materials (UCIM) with dry apparent density less than 120 kg/m³ were prepared by physical foaming process. Through the design of different volume of EPS particles, the effect of the EPS particlescontent on the foamed concrete matrix pore structure, the strength and thermal performance of ultra-light cement-based composite thermal insulation materials was analyzed. The results show that the appropriate mix content of EPS particles significantly improves the compressive strength and tensile strength of ultra-light cement-based composite thermal insulation materials, and ensures that ultra-light cement-based composite thermal insulation materials have a good thermal performance. Through the synergistic effect of EPS particles and foamed concrete matrix, the mechanical properties and thermal properties are coordinated, and ultra-light cement-based composite thermal insulation materials with high performance are prepared.

Key words: EPS particle, ultra-light cement-based composite thermal insulation material, strength, thermal conductivity, pore structure, synergistic effect

CLC Number:

TU528.2

WU Zihao, WANG Wuxiang, LIU Guangdong, WANG Aijun, ZHANG Leilei, YANG Jun. Effects of EPS Particles on Properties of Ultra-Light Cement-Based Composite Thermal Insulation Materials[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2021, 40(8): 2527-2533.

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