在砖瓦质量中,问题最多而又最难解决的是开裂问题。开裂的原因是多方面的;在生产过程中,几乎每个工序都有使它开裂的可能。兹分述如下:一、属于原料方面的:粘土原料如果处理不善,在原料中有石子、瓦礫、硬泥块,原料含水量不均,或泥性粘土和砂性粘土没有混合均匀,这些情况都会使坯体成为非均质,非均质的坯体在干燥时各部分的 In the quality of brick and tile, the most problematic and most difficult to solve is the cracking problem. The reasons for cracking are manifold; in the production process, almost every process has the potential to crack it. They are described as follows: First, as regards raw materials: if the clay material is not properly handled, there are stones, rubble, and hard clay blocks in the raw materials, the water content of the raw materials is not uniform, or the clay clay and sand clay are not mixed uniformly. All will make the body non-homogeneous, and the non-homogeneous body will be dry