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| 粉煤灰烧结砖的成型条件研究 |
| Study of the preparation of fly-ash fired brick |
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| DOI：10.3969/j.issn.1671-5322.2002.02.001 |
| 中文关键词: 粉煤灰 烧结砖 粘土 成型 |
| 英文关键词: fly ash sintered brick clay shaping |
| 基金项目: |
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| 摘要点击次数: 3709 |
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| 中文摘要: |
| 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7.3 MPa升至19.6 MPa时,干坯强度迅速升高,经1000 ℃、1050 ℃、1100 ℃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19.6 MPa为粉煤灰烧结砖成型的最佳压力. |
| 英文摘要: |
| 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 1000 ℃,1050 ℃,1100 ℃ 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. |
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