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膨胀珍珠岩是珍珠岩矿石经破碎、筛分、预热再在高温中悬浮瞬间焙烧而成的一种具有封闭气孔、轻质粒状材料。它容重轻,保温性好,且具有一定强度,是较好的轻骨料之一。国内外膨胀珍珠岩主要应用于建筑保温和建筑灰浆用集料。近年来亦开始用这种轻集料配制成混凝土以用于承重结构。这样可降低钢筋混凝土结构重量的30～35%,增大装配构件的尺寸,改善
Expanded perlite is a closed-cell, lightweight, granular material made by perlite ore crushing, screening, preheating, and subsequent roasting at elevated temperatures. It has light weight, good heat preservation, and a certain strength. It is one of the better lightweight aggregates. Domestic and foreign expanded perlite are mainly used in building insulation and construction mortar aggregates. In recent years, lightweight aggregates have also been used to make concrete for load-bearing structures. This can reduce the weight of reinforced concrete structures by 30 to 35%, increase the size of assembly components, and improve