Open AccessPreparation and properties of solid waste based lightweight plastering gypsum
Author(s) -
Xiaohua Tian,
Liu Dong-ji,
Zhao Fang
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/768/2/022048
Subject(s) - gypsum , compressive strength , calcination , flexural strength , materials science , flue gas desulfurization , ground granulated blast furnace slag , thermal conductivity , slag (welding) , composite material , composite number , metallurgy , waste management , fly ash , engineering , chemistry , biochemistry , catalysis
The lightweight plastering gypsum with excellent heat preservation performance was prepared from β-hemihydrate gypsum obtained by calcining desulfurization gypsum, the polyurethane foam waste modified with water glass, and a composite auxiliary agent composed of ground steel slag and granulated blast-furnace slag. The density of the product is 762.3 kg/m 3 , the initial setting time is 150 min, the final setting time is 205 min, the flexural strength is 3.1 MPa, the compressive strength is 6.8 MPa, and the thermal conductivity is 0.098 W/(m⋅K).