陶粒PF混凝土性能试验研究

Experimental Study on Properties of Ceramsite PF Concrete

为探索与结构混凝土同寿命的保温模板的主要性能,以陶粒和PF(酚醛树脂)颗粒为骨料,水泥为胶结材料,以水泥用量为变化参数,分别制作了4组用以测定导热系数和吸水率、抗压强度的混凝土试件。试验结果表明,导热系数和吸水率随水泥用量增加而降低,抗压强度随水泥用量增加而增加,当水泥用量达到200 kg/m^3时,导热系数及抗压强度均达到JG/T 283—2010《膨胀玻化微珠轻质砂浆》的要求,当水泥用量达到250 kg/m^3时,吸水率仅为5.2%,导热系数亦符合JG/T 283—2010的规定,但其抗压强度远高于其要求。该成果可为保温模板设计提供依据,也可为外墙保温层材料选用提供新途径。

The same life performance as the main structural concrete exploration and incubated template to ceramic and PF(phenol resin)particles aggregate,cement cementing material in an amount of variation parameter,the 4 groups were prepared for the determination of concrete specimens with thermal conductivity,water absorption and compressive strength.The results show that the thermal conductivity and water absorption decrease with the increase of cement dosage,but the compressive strength increases with the increase of cement dosage.When the cement dosage is 200 kg/m^3,the thermal conductivity and compressive strength reach the requirements of JG/T 283-2010 Expanded Vitrified Microbeads Lightweight Mortar,when the cement dosage is 250 kg/m^3,the water absorption rate is only 5.2%,the thermal conductivity is also in line with JG/T 283-2010,but its compressive strength is far higher than its requirements.The result can provide a basis for the design of the thermal insulation template,and can also provide a new way for the selection of the outer wall insulation material.