硅酸盐通报2023，Vol.42Issue(12)：4262-4270,9.
泡沫掺量对超轻质硫氧镁基泡沫混凝土性能的影响
Effect of Foam Content on Performance of Ultra-Lightweight Magnesium Oxysulfate Foamed Concrete
摘要
Abstract
Magnesium oxysulfate cement has the advantages of light weight,low thermal conductivity and fire resistance,so it has great market potential to be prepared as foamed concrete and applied in building exterior insulation system.The density of ultra-lightweight magnesium oxysulfate foamed concrete was regulated by incorporating high stability modified foam.The changes in pore structure were investigated through scanning electron microscope(SEM)and optical microscope(OM).Additionally,the effects of density and pore structure variations on the compressive strength and thermal conductivity of ultra-lightweight magnesium oxysulfate foamed concrete were also studied.The results indicate that with the increase of content of high stability modified foam,the number of pores increases and the average pore size significantly decreases.The density of ultra-lightweight magnesium oxysulfate foamed concrete decreases gradually,and the compressive strength gradually decreases as well.When the foam content is 250% (mass fraction),the density of ultra-lightweight magnesium oxysulfate foamed concrete reduces to 88.33 kg/m3,and the thermal conductivity reduces to 0.038 2 W/(m·K).关键词
超轻质/改性硫氧镁水泥/泡沫混凝土/气孔结构/导热系数/抗压强度Key words
ultra-lightweight/modified magnesium oxysulfate cement/foamed concrete/pore structure/thermal conductivity/compressive strength分类
建筑与水利引用本文复制引用
吕夏婷,谭洪波,张世轩,李懋高,王金堂,蹇守卫..泡沫掺量对超轻质硫氧镁基泡沫混凝土性能的影响[J].硅酸盐通报,2023,42(12):4262-4270,9.基金项目
国家自然科学基金(51978544) （51978544）
2021年湖北省技术创新重大专项(2021BAA060) （2021BAA060）
