纳米粉煤灰改性泡沫混凝土在装配式节能墙板中的应用  

Application of nano fly ash modified foam concrete in prefabricated energy-saving wall panels

作　　者：欧宁 OU Ning(Hebei Hongxin Tendering Co.,Ltd.,Shijiazhuang 050000,China)

机构地区：[1]河北宏信招标有限公司,河北石家庄050000

出　　处：《粘接》2025年第3期94-96,100,共4页Adhesion

摘　　要：为提高装配式夹心外墙挂板的节能效率,提出采用纳米二氧化硅对水泥粉煤灰泡沫混凝土进行改性处理,然后将其填充到夹心外墙挂板的内叶板中。结果表明,当纳米二氧化硅掺量为1%时,纳米改性粉煤灰泡沫混凝土的综合性能最优,此时材料的平均导热系数为0.1587 W/(m2×K);当纳米改性粉煤灰泡沫混凝土填充厚度达到30 cm后,墙板的导热系数仅为0.373 W/(m2×K),满足宿舍楼建筑75%的节能目标;将40 cm厚纳米改性粉煤灰泡沫混凝土填充到原墙板的内叶板中,改进后墙板相比改进前墙板总体节能率达到11.1%。In order to improve the energy-saving efficiency of the prefabricated sandwich exterior wall cladding,it was proposed to modify the cement fly ash foam concrete by nano silica,and then fill it into the inner leaf plate of the sandwich exterior wall cladding.The results showed that when the nano-silica content was 1%,the comprehensive performance of the nano-modified fly ash foam concrete was the best,and the average thermal conductivity of the material was 0.1587 W/(m2×K).When the filling thickness of nano-modified fly ash foam concrete reached 30 cm,the thermal conductivity of the wallboard was only 0.373 W/(m2×K),which met the energy-saving target of 75%of the dormitory building.When 40 cm thick nano-modified fly ash foam concrete was filled into the inner leaf panel of the original wall panel,the overall energy saving rate of the improved rear wall panel reached 11.1%compared with the improved front wall panel.

关 键 词：装配式节能墙板 纳米二氧化硅 粉煤灰泡沫混凝土 

分 类 号：TQ177.67[化学工程—硅酸盐工业]