绪言 随着国民经济建设发展的迅速增长,对建筑的要求不论论在质和量上都大力提高。在目前我国居住和民用建筑中,普通桃制粘土砖是最重要的建筑材料之一。特别是我国学习苏联先进经验,采用混合结构建造高达十层的楼房,以节约水泥、钢材和木材,对砖的质量就提出了更高的要求。第 Introduction With the rapid growth of the national economy, the demand for architecture has been greatly improved both qualitatively and quantitatively. In our country’s residential and civil buildings, ordinary peach clay bricks are one of the most important building materials. In particular, our country has learned the advanced experience of the Soviet Union and used mixed structures to build up to ten floors of buildings to save cement, steel and wood, and put forward higher requirements for the quality of bricks. The first