Research of prefabricated autoclaved lightweight concrete(VPR)composite insulation wall panel
LI Meihong
XU Hongsheng
SUN Hongming
Abstract：In the autoclaved lightweight concrete,fiber reinforced composite material cage(FRP cage)was prepared.A special hollow method of sandwich technology was used to prepare lightweight concrete panels with reinforcing ribs and hollow structure,inner wall of the hollow structure layer has a waterproof coating.Assembled autoclaved lightweight concrete composite thermal insulation wall panels(VPR panels)was prepared by filling two-component polyurethane in the hollow structure of the sandwich structure.It is a kind of heat preservation and self-insulation composite wall board with integrated lightweight.Experimental research and theoretical analysis of the thermal insulation,sound insulation,fire resistance and flexural performance of VPR board was carried out.The results show that the heat transfer coefficient of the 300 mm thick VPR board is 0.24 W/(m2·K),the air-acoustic weighted sound insulation is up to 46 dB,the fire-resistant limit is more than 2h,and the bending capacity is about 2.7 times of the design value,which is a sufficient safety reserve.
Keywords：prefabricated buildingautoclaved lightweight concreteFRP barVPR panelperformance research
Publication Date：2025-01-24
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)