| 掺粉煤灰-石灰对膨胀土胀缩性的影响试验研究 |
| |
| 作者姓名： | 查甫生 廖斌 崔可锐 |
| |
| 作者单位： | 合肥工业大学,资源与环境工程学院,合肥,230009 |
| |
| 摘 要： | 本文探讨利用粉煤灰、石灰-粉煤灰作为添加剂改良合肥膨胀土的可行性与改良效果。试验研究了粉煤灰、石灰-粉煤灰掺合物对膨胀土的胀缩性的影响以及养护作用对改良膨胀土胀缩性的影响。研究结果表明,随着掺灰率的增加,膨胀土的自由膨胀率、膨胀量、膨胀力与线缩率呈减小趋势,这说明掺粉煤灰可有效降低膨胀土的胀缩性。经过一定龄期养护后的击实样的膨胀试验结果表明,随着养护龄期的加长,膨胀土的膨胀量与膨胀力都有一定降低。
|
| 关 键 词： | 膨胀土 粉煤灰 改良 无侧限抗压强度 |
Experimental Study on Fly ash-Lime Additives on Swell-Shrinkage Properties of Expansive soil |
| |
| Authors: | ZHA Fu-Sheng LIAO Bin CUI Ke-Rui |
| |
| Institution: | ZHA Fu-Sheng,LIAO Bin,CUI Ke-Rui (School of Resources and Environmental Geology,Hefei University of Technology,Anhui Hefei 230009,China) |
| |
| Abstract: | The swelling,swelling pressure and moisture dependent shear strength of expansive soils pose serious problems to civil engineers. Disposal of large quantities of fly ash,which is an industrial waste,poses an environmental problem in China.In this study,the potential use and effectiveness of fly ash without or with lime as an additive in improving expansive soils are evaluated. The test results show that free swell index,swell potential,swelling pressure and axial shrinkage percent decreased with an increase... |
| |
| Keywords: | expansive soil fly ash improvement unconfined compressive strength |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
