粉煤灰烧结砖的成型条件研究  

Study of the preparation of fly-ash fired brick

作　　者：郭伟[1] 徐玲玲[2] 钟白茜[2] 

机构地区：[1]盐城工学院材料工程系，江苏 盐城 224003 [2]南京工业大学材料系，江苏 南京 210009

出　　处：《盐城工学院学报（自然科学版）》2002年第2期1-4,共4页Journal of Yancheng Institute of Technology:Natural Science Edition

摘　　要：针对粉煤灰坯料的特性采用半干压成型方法 ,测定了不同成型压力条件下 ,干坯强度的变化 ;以及在不同成型压力和不同焙烧温度条件下 ,烧结砖性能的变化。结果表明 :当成型压力由 7.3MPa升至 1 9.6MPa时 ,干坯强度迅速升高 ,经 1 0 0 0℃、1 0 5 0℃、1 1 0 0℃下烧成的烧结砖均出现显气孔率降低、吸水率降低、体积密度升高 ,抗压强度升高等现象 ;当成型压力进一步升高后 ,干坯强度和烧结性能变化较小。这表明 1 9.Fly ash green body was molded by semi-dry pressing. The compressive strength of the green body molded in various pressing was tested. The green body was calcined at various temperatures. The physical and mechanical properties of the fired brick were researched. The results show that, with shaping pressure from 7.3 MPa up to 19.6 MPa,the strength of the adobe increases rapidly. And the properties of the bricks calcined 1?000 ℃,1?050 ℃,1?100 ℃ show that its apparent porosity and water absorption decreased, volume weight and compressive strength increased with calcineing temperature gradually. Shaping pressure above 19.Mpa, the strength of the adobe and the properties of the fired brick vary in small rang. It shows that the suitable shaping pressure is about 19.6 MPa.

关 键 词：粉煤灰烧结砖 成型条件 粘土砖 成型压力 焙烧温度 干坯强度 建筑材料 

分 类 号：TU522.19[建筑科学—建筑技术科学]