最近我们利用废瓦片和水泥制成美丽、坚固的方格花砖,经过检验耐压强度为104公斤/平方厘米,吸水率9%,完全合乎建筑上的需要. 花砖的制造方法是在100斤水泥中掺入50斤瓦片粉(废瓦片事先用球磨机粉磨成细粉),加8%的水,搅拌均匀,放入模型内;另外以100斤水泥和40斤细沙配的料子挂面,然后用压力机(手摇压瓦机亦可)压成瓦坯,放在木架上干燥24小时后,放在水池内养 Recently, we used waste tiles and cement to make beautiful and sturdy checkered tiles. After testing, the compressive strength was 104 kg/cm2 and the water absorption rate was 9%, which perfectly met the needs of the building. The manufacturing method of the tiles was 100 kg. The cement was mixed with 50 pounds of tile powder (waste tiles were pulverized into fine powder with a ball mill in advance), 8% of water was added, and they were evenly mixed and put into the mold; another 100 pounds of cement and 40 pounds of fine sand were mixed with the material. Noodle, and then pressed into a blank with a press (hand-operated tile press), placed on a wooden rack and dried for 24 hours, and placed in a pool.