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一、国内墙体材料改革进展情况 我国提倡墙体材料改革已经三十多年了,前几十年步子非常缓慢,曾出现停滞和倒退现象。空心砖的研制和应用,从1961年就开始进行,六十年代中期达到高潮。1964年10月,建工部中南管理局在长沙召开了中南地区粘土空心砖经验交流会,会上展出了华东、中南、西南各大区研制的承重与非承重空心砖样品近百种,最大孔洞率达40％。那次会议后,粘土空心砖的研制工作,有了很大发展。昆明市的昆砖和云砖也研制了廿余种不同规格尺寸和孔洞率的空心砖,并建盖了试验楼。但由于种种原因,粘土空心砖未能得到进一步的推广和应用。
First, the progress of the domestic reform of the wall materials China has been promoting the reform of wall materials for more than 30 years, the pace of the first few decades is very slow, there have been stagnation and retrogression. The development and application of hollow bricks began in 1961 and reached a climax in the mid-1960s. In October 1964, the Central South Bureau of the Ministry of Construction and Engineering held an experience exchange conference on clay hollow bricks in the Central and South China region in Changsha. At the conference, hundreds of heavy-duty and non-load-bearing hollow brick samples were developed for development in East China, South Central, and Southwest China. The rate reached 40%. After that meeting, the development of clay hollow bricks has made great progress. The Kunming and Yunzhuan bricks in Kunming City have also developed hollow bricks of various sizes and hole rates, and built and built test buildings. However, due to various reasons, clay hollow bricks have not been further promoted and applied.