论文部分内容阅读
我国从六十年代,就已着手研究和开发各种新型墙体材料,但进展不快。到1986年,全国新型墙体材料(包括空心砖、砌块、非粘土砖、石膏制品、轻骨料混凝土等)的生产量,只占全国墙体材料生产总量的4～5%。新型墙体材料为什么发展缓慢呢?主要原因是:①实心粘土砖,生产工艺简单,产品成本低,新型墙体材料在价格上竞争不过实心粘土砖。②新建实心粘土砖企业投资少、见效快,生产实心粘土砖成了农民脱贫致富的一条途径。乡镇企业的实心粘土砖垄断了墙体材料市场,抑制了新型墙体材料的发展。③推广应用新型墙体材料必须与建筑部门通力合作,而建材建筑两家目前配合得还不够好。加速发展新型墙体材料,必须按照“保护
Since the 1960s, China has begun to research and develop various new wall materials, but the progress is not fast. By 1986, the national production of new wall materials (including hollow bricks, blocks, non-clay bricks, gypsum products, lightweight aggregate concrete, etc.) accounted for only 4-5% of the total production of wall materials in the country. Why is the development of new wall materials slow? The main reasons are: 1 solid clay bricks, the production process is simple, the product cost is low, the new wall materials can not compete in prices but solid clay bricks. 2 New solid clay brick companies have less investment and quick results, and the production of solid clay bricks has become a way for farmers to shake off poverty and become rich. The solid clay bricks of township and township enterprises monopolize the market for wall materials and inhibit the development of new wall materials. 3 The promotion and application of new wall materials must co-operate with the construction department, and the building materials and buildings are still not good enough. Accelerating the development of new wall materials must follow the "protection