摘要
以磷酸镁水泥（magnesium phosphate cement,MPC）为胶凝材料制备出了表观密度为1800-750 kg/m3的可用于结构的磷酸镁水泥-聚苯乙烯泡沫（MPC-EPS）混凝土.试验研究了MPC-EPS混凝土的力学性能、干缩性能、吸水率及抗冻融和干湿循环能力.结果表明：MPC-EPS混凝土具有较高的早期强度,且EPS掺量越大,其早期强度发展越快;与普通水泥为胶凝材料的EPS混凝土相比,MPC-EPS混凝土具有较低的干缩变形和吸水率,是一种耐久性良好的保温隔热材料.
The present work aims to develop a class of structural grade expanded polystyrene（EPS） concrete with a wide range of concrete densities between 750 kg/m^3 and 1 800 kg/m^3 through replacement of cement with magnesium phosphate cement（MPC）. The focus of this paper is to characterize the strength, drying shrinkage and water absorption properties of MPC-EPS concrete. The results show that the MPC-EPS concrete has high early strength and the strength develops faster with the content of EPS increased at early ages. Besides, the drying shrinkage and water absorption observed for MPC-EPS concrete is much lower than that of EPS concrete with cement. The results indicate that MPC-EPS is a heat-proof building material with good durability.
出处
《建筑材料学报》
EI
CAS
CSCD
北大核心
2009年第6期650-655,共6页
Journal of Building Materials
基金
国家自然科学基金资助项目(50708059)
教育部留学人员回国基金资助项目
先进土木工程材料教育部重点实验室(同济大学)开放基金资助项目
关键词
聚苯乙烯泡沫(EPS)
强度
轻质
吸水率
干缩
expanded polystyrene（EPS）
strength
lightweight
water absorption
drying shrinkage
