解放后,北京市为了适应生产发展和人民生活的需要,每年都有较大的民用建筑任务。但是,建筑技术满足不了日益发展的形势需要。墙体材料仍然沿用传统的粘土砖,靠手工一刀一砖砌筑,劳动强度大,机械化施工程度低,不仅影响劳动生产率的提高,而且与农业争地、要砖,影响农业的发展。同时,随着工业迅速发展,北京地区工业废料不断增多,这些工业废料既占用大量堆放场地,又污染环境,危害农田,处理它还要耗费大量的人力、物力和资金,这是一个很大 After the liberation, Beijing has a larger task of civil construction each year in order to meet the needs of production development and people’s lives. However, building technology cannot meet the growing needs of the situation. Wall materials still use traditional clay bricks, which are built by hand using one knife and one brick. The labor intensity is large, and the mechanized construction is low. This not only affects the improvement of labor productivity, but also competes with agriculture for land and bricks, and affects the development of agriculture. At the same time, with the rapid development of industry, the amount of industrial waste in the Beijing area is increasing. These industrial wastes not only occupy a large number of piled sites, but also pollute the environment and endanger the farmland. Processing it also requires a lot of manpower, material resources, and funds. This is a great deal.