在毛主席无产阶级革命路线指引下,天津市基本建设战线一派大好形势,不断新建和扩建大量厂房和民用住宅建筑。天津地区地基的承载能力较差,而且天然骨料资源比较缺乏,建筑工程用的骨料由外地运来,费用增加到每立米24元之多。另一方面,海河流水每年从上游冲来大量泥砂,淤积河底影响航运。据统计每年清理河道,可挖出淤泥100万立米。用海河泥作主要原料,烧制人造轻骨料,这不仅增产了轻骨料,而且可以变废 Under the guidance of Chairman Mao’s proletarian revolutionary line, Tianjin’s infrastructure construction front has been in an excellent situation and new construction and expansion of large-scale factory buildings and residential buildings for civilian use have been continuously carried out. The carrying capacity of the foundations in the Tianjin area is poor, and the natural aggregate resources are relatively lacking. The aggregates used in construction projects are transported from other places and the cost is increased to as much as 24 yuan per cubic meter. On the other hand, a large amount of silt is rushed from the upper reaches of the river water every year, and siltation of the river bottom affects navigation. According to statistics, the annual cleaning of the river channel can excavate 1 million cubic meters of silt. Using Haihe mud as the main raw material and firing artificial lightweight aggregate, this not only increases the production of light aggregates, but also can change the waste.