预拌橡胶集料保温砂浆的性能研究

Properties of premixed rubberized insulation mortar

在水泥砂浆中掺入废旧橡胶集料作为轻质保温材料,结合可再分散胶粉(RPP)、木质纤维、甲基纤维素醚和碳酸钙制备预拌橡胶集料保温砂浆(PRIM)。研究了橡胶粒径、掺量及可再分散胶粉对PRIM强度、柔韧性、导热系数的影响,结果表明,PRIM与普通预拌砂浆以及相变保温砂浆相比,具有良好的工作性能、柔韧性、粘结强度和较低的导热系数。

Premixed rubberized insulation mortar（PRIM） was prepared by adding waste rubber aggregate in the cement mortar as light-weight aggregate,with the compound of redispersible polymer powders （RPP）,lignoeelluloses,methyleellulose and carbonate. This paper studies on the intluence of size and dosage of rubber on the strength,tlexibility and thermal conductivity of PRIM and of RPP on the properties of PRIM. The results show that the premixed rubherized insulation mortar has many advantages over the normal premixed mortar and the phase change thermal insulation mortar, such as good working performance,flexibility,bond strength,and lower thermal conductivity.