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概述近年来,随着我国城市化进程的推进和小城镇建设及新农村建设的发展,大量废旧建筑物拆除和新建工程施工产生大量的建筑垃圾,据统计,中国建筑垃圾的年排放量已超过4亿吨。目前,我国建筑垃圾特别是废弃混凝土的回收利用率不到20%,而日本、美国等发达国家废弃混凝土的回收利用率达到85%以上。骨料作为混凝土中用量比重最大的部分,如何合理的循环利用,减少天然砂石的开采消耗是实现废弃混凝土再生资源综合
In recent years, with the progress of urbanization in our country and the development of small towns and new rural areas, a large amount of construction waste has been generated from the demolition of a large number of waste buildings and the construction of new projects. According to statistics, the annual emissions of construction waste in China have exceeded 400 million tons. At present, the recycling rate of China’s construction waste, especially waste concrete, is less than 20%, while the recycling rate of waste concrete in Japan, the United States and other developed countries is over 85%. Aggregate as the proportion of the largest proportion of concrete, how to recycle properly, reducing the consumption of natural gravel is to achieve a comprehensive recycling of waste concrete resources