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由于传统高层建筑用混凝土骨料采用天然原料,造成大量山林、耕地被破坏,雨季造成大量山体滑坡及泥石流,环境问题突出。传统建筑材料又由于自身质量大造成高层建筑自重过大,及天然材料的保温性能、耐久性能均不佳使得高层建筑物保温性能低、耐久性差等弊端。且天然混凝土骨料不利于高层泵送,施工难度较大,施工成本较高,不可持续发展,因此现代高层泵送混凝土普遍采用轻质骨料。轻骨料混凝土这一新兴材料已在高层建筑、大跨度结构、海洋工程等土木工程中广泛应用,其前景可观。本文主要对轻质骨料混凝土的构成、特点、施工工艺及应用效果进行详细分析,以期为轻质骨料混凝土的推广提供必要支持。
As the traditional high-rise buildings with the use of natural aggregates of concrete aggregate, resulting in a large number of mountain forests, farmland is destroyed, causing a large number of landslides and debris flow during the rainy season, environmental problems prominent. Due to the high quality of traditional building materials, the overburden of high-rise buildings and the poor insulation properties and durability of natural materials make the high-rise buildings have poor insulation properties and poor durability. And the natural aggregate is not conducive to high-level pumping, construction is more difficult, higher construction costs, unsustainable development, so modern high-rise pumping concrete commonly used lightweight aggregate. The new lightweight aggregate concrete material has been widely used in civil engineering such as high-rise buildings, large-span structures and marine engineering. The prospect is promising. This article mainly analyzes the composition, characteristics, construction technology and application effect of lightweight aggregate concrete in order to provide the necessary support for the promotion of lightweight aggregate concrete.