建房盖屋是百年大计,质量好坏,关系着居家安危。但是,往往有些质量低劣的建筑材料流通于市。那么,怎样鉴别其质量呢? 1.水泥。优质水泥抓一把握在手中不起团,会立刻从指缝中喷出来。如果手中留下大小不等的小块。那水泥不是质地粗糙,就是过期了。购买水泥时 Building a house is a century-long plan. The quality is good or bad, which is related to the safety of the home. However, some poor quality building materials often flow to the city. So, how to identify its quality? 1. Cement. As soon as high-quality cement is grasped, you will not be able to hold the group in your hands and will immediately spout out of your fingers. If you leave small pieces of different sizes in your hand. The cement is not rough or expired. When buying cement