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轻骨料和轻骨料混凝土具有轻质、高强、保温、耐火、抗震和施工适应性强等特点,不仅可用作围护结构,还可用于承重结构。尤其在高层和大跨结构中应用,其综合技术经济效益更为显著。我国是轻骨料资源极为丰富的国家。目前已生产和应用的轻骨料有:粘土陶粒、页岩陶粒、粉煤灰陶粒、浮石、火山渣、珍珠岩等数种。除此之外,近年来,国外已将硅藻土成功地用于作轻骨料,制得容重800～1800公斤/米~3的轻骨料混凝土。由于硅藻土的主要矿物成分为蛋白
Lightweight aggregate and lightweight aggregate concrete have the characteristics of light weight, high strength, thermal insulation, fire resistance, seismic resistance and strong construction adaptability, and can be used not only as an envelope structure but also as a load-bearing structure. Especially in the application of high-level and large-span structures, its comprehensive technical and economic benefits are even more significant. China is a country rich in light aggregate resources. Lightweight aggregates that have been produced and applied at present include: clay ceramsite, shale ceramsite, fly ash ceramsite, pumice, volcanic slag, and perlite. In addition, in recent years, diatomaceous earth has been successfully used in foreign countries as a lightweight aggregate to produce lightweight aggregate concrete with a bulk density of 800-1800 kg/m3. Since the main mineral component of diatomite is protein