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秦皇岛市建筑材料总厂制砖分厂研制生产的废渣混凝土空心砌块于1992年9月通过了鉴定。该产品与粘土砖相比,容重轻、强度高,能减轻墙体自重,特别有利于抗震。同时保温
The waste residue concrete hollow block developed and produced by the brickmaking factory of the Qinhuangdao Construction Material Factory passed the appraisal in September 1992. Compared with clay bricks, this product has light weight and high strength and can reduce the weight of the wall, which is particularly beneficial to earthquake resistance. While keeping warm