北京的建筑砌块始于20世纪60年代中期,同时引进开发蒸压加气混凝土砌块;90年代初期兴起炉渣、黏土陶粒混凝土小型空心砌块;90年代中期又引进开发了普通混凝土小型空心砌块;进入21世纪,发展了页岩陶粒和浮石等轻集料混凝土小型空心砌块,纯绿色环保产品———石膏空心(实心)砌块 Building blocks in Beijing began in the mid-1960s with the introduction of autoclaved aerated concrete blocks. In the early 1990s, small hollow blocks of slag and clay ceramsite concrete were introduced. In the mid-1990s, ordinary hollow concrete hollow cores Block; In the 21st century, the development of shale ceramsite and pumice light aggregate concrete small hollow block, pure green products --- gypsum hollow (solid) block