目前,一般建筑使用的保温隔热混凝土常使用轻质混凝土如膨胀珍珠岩混凝土、陶粒混凝土、泡沫或加气混凝土。为了开发重量更轻、吸水率小的混凝土,国外利用泡沫聚乙烯颗粒作轻骨料,研制出超轻质聚乙烯混凝土。这种混凝土是用普通硅酸盐水泥、聚乙烯泡沫粒(直径 At present, heat-insulating concrete used in general buildings often uses lightweight concrete such as expanded perlite, ceramsite concrete, foam or aerated concrete. In order to develop lightweight concrete with low water absorption, overseas use of foamed polyethylene pellets as lightweight aggregates has led to the development of ultra-lightweight polyethylene concrete. The concrete is made of ordinary Portland cement, polyethylene foam particles (diameter