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轻骨料混凝土是一种自重轻、保温性能好、、抗震能力强的新型建筑材料。早在廿年代,国外已有所研究和应用,最初应用于造船工业,随后广泛应用于建筑工程。近20～30年来,国外结构轻骨料混凝土的研究和应用有了迅速的发展,除了在高层建筑和桥梁工程中大量采用外,目前正逐步向海洋工程发展。在我国,虽然起步较晚,但自五十年代起,在轻骨料混凝土的研究和应用方面也取得了相当进展。本文对国内外轻骨料混凝土的发展作一简要综述,并着重介绍它的主要力学特性及其在公路桥梁中的应用。
Lightweight concrete is a light weight, good insulation properties, strong seismic capacity of new building materials. As early as the twenties, abroad has been studied and applied, initially used in the shipbuilding industry, then widely used in construction. Nearly 20 to 30 years, the foreign research and application of lightweight aggregate concrete has developed rapidly, in addition to a large number of high-rise buildings and bridges in the project, is now gradually developing to marine engineering. In our country, although started late, considerable progress has been made in the research and application of lightweight aggregate concrete since the 1950s. This article gives a brief overview of the development of lightweight aggregate concrete at home and abroad, and emphatically introduces its main mechanical properties and its application in highway bridges.