外加剂掺量对EPS保温砂浆性能的影响

研究引气剂、乳胶粉和纤维素醚等3种外加剂掺量对EPS保温砂浆工作性、含气量及干表观密度的影响,分析含气量与工作性及干表观密度之间的关系。研究结果表明,3种外加剂的掺量变化均对EPS保温砂浆的工作性、含气量及干表观密度有较大的影响;当含气量小于40%时,EPS保温砂浆的工作性随着含气量的增加而改善;EPS保温砂浆的干表观密度、含气量与导热系数之间存在着一定的关系。

The influence of three additives content i.e. air entraining agent,emulsion powder and cellulose ether on the workability,air content and dry apparent density of EPS thermal insulating mortar are studied, the relationship of air content,workability and dry. apparent density are analyzed.The resuh indicates that the content variation of three additives all have great influence on workability,air content and dry apparent density of EPS thermal insulating mortar; when air content is less than 40%,the workability of EPS thennal insulating mortar become better with the increase of air content：the dry apparent density,air content and coefficient of thermal conductivity of EPS thermal insulating mortar have certain relationships.