论文部分内容阅读
随着建筑物向高层和大跨度发展,以及建筑业的工业化、机械化、装配化,轻集料及其混凝土也得到了相应发展。用轻集料配制的混凝土通称为轻集料混凝土,它的容重在1800公斤/米~3以下。轻集料混凝土按功能可分为承重(结构)与保温用两种。轻集料混凝土在国外普遍发展开始于第二次世界大战以后。它具有自重轻、隔热性能好、能防火、便于施工等优点,因此发展速度较快。目前正向轻质、高强和预应力方向发展。
With the development of high-rise buildings and large spans, as well as the industrialization, mechanization, and assembly of the construction industry, lightweight aggregates and their concrete have also developed accordingly. Concrete made of light aggregates is called lightweight aggregate concrete and its bulk density is below 1800 kg/m3. Lightweight aggregate concrete can be divided into two types: load bearing (structure) and insulation. The general development of lightweight aggregate concrete abroad began after the Second World War. It has the advantages of light weight, good heat insulation performance, fire prevention, and easy construction. Therefore, the development speed is faster. At present, it is developing towards light weight, high strength and prestress.