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到2000年,在全国新建房屋中,使用各种空心烧结制品和新型墙体材料的比重要达到40％,其中大城市要达到60％,这是国家建材局制订的墙体材料改革的目标。有关专家指出,实现2000年墙体材料改革的目标主要依靠改造粘土实心砖,发展各种空心和粉煤灰粘土烧结砖来实现,同时发展其它非粘土制品。目前国家建材局正在
By the year 2000, in the construction of new houses throughout the country, the ratio of various hollow sintered products and new wall materials will reach 40%, of which major cities will reach 60%. This is the goal of the reform of wall materials formulated by the National Building Material Bureau. Relevant experts pointed out that the goal of realizing the reform of wall materials in 2000 mainly depends on the transformation of clay solid bricks, the development of various hollow and fly ash clay fired bricks, and the development of other non-clay products. The National Building Materials Bureau is currently