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一、概况聚苯乙烯(PS)泡沫塑料砼属于轻质砼,但它比一般的轻质砼如加气砼更轻,而且隔热性更好,强度也较高。它的容重为200～1000kg/m~3,导热系数为0.05～0.35千卡/m·h·℃,抗压强度为0.5～10MPa。PS 泡沫砼主要由水泥、砂、水和泡沫 PS 颗粒组成,调整各组分的比例即可得到不同容重的制品。泡沫 PS 由可发性 PS 发泡得到,粒径一般为1.5～2.5mm,容重为13kg/m~3或更低。除以上组分外,PS 泡沫砼中还须加入润湿助剂,因为 PS 泡沫颗粒表面是憎水的,与水泥的粘结力较差,加入润湿助剂能大大提高二者间的粘结力。润湿助剂一般为
I. Overview Polystyrene (PS) foams are light weight, but they are lighter than ordinary lightweight materials such as aerated helium. They also have better thermal insulation and higher strength. Its bulk density is 200 ~ 1000kg/m ~ 3, thermal conductivity is 0.05 ~ 0.35 kcal / m · h · °C, compressive strength of 0.5 ~ 10MPa. The PS foam consists mainly of cement, sand, water, and foam PS particles. Adjusting the proportions of the components can yield different bulk density products. Foam PS is obtained from expandable PS foam and has a particle size of 1.5 to 2.5 mm and a bulk density of 13 kg/m3 or less. In addition to the above components, wetting aids must be added to the PS foam, because the surface of the PS foam particles is hydrophobic, and the adhesion to the cement is poor. Adding wetting additives can greatly increase the adhesion between the two. Force. Wetting aids are generally