Preparation and properties of lightweight high-strength magnesium oxysulfate foam cement
HE Nan
HAO Wanjun
LIU Changzai
RU Haifeng
CHEN Weipeng
ZHAO Xu
Abstract：Taking magnesium oxysulfate cement and fly ash as raw material,a new type of magnesium oxysulfate foam cement of A05~A08 dry density grade was prepared. The effects of fly ash content and sample dry density on compressive strength,water absorption and thermal conductivity were discussed. The results showed that when the content of fly ash was 40%,the compressive strength of the magnesium oxysulfate foam cement of A05~A08 density grade can be effectively improved while the water absorp-tion and the thermal conductivity of the sample was reduced. Scanning electron microscopy showed that there was no new hydra-tion phase in the addition of fly ash in magnesium oxysulfate foam cement,and the micro-aggregate effect of fly ash particles can make the microstructure of magnesium oxysulfate foam cement more compact.
Keywords：magnesium oxysulfate foam cementfly ashcompressive strengthwater absorptionthermal conductivity
Publication Date：2017-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 20-23 )