Lightweight building slab or panel - of polyurethane foam contng foamed glass aggregate

摘要

A method of making load-bearing, monolithic building slabs of lightweight concrete having a low water absorption and closed cell structure is as follows: a supporting frame, esp. of rigid steel members or the like, is placed in a mould, the mould is filled with foam glass granules as the aggregate, then a foaming liquid polyurethane based mixt. is injected and bonded under pressure.