| 高炉渣填料改良与孔隙率计算方法 |
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| 引用本文： | 刘香,吴永博,许有俊,黄大维.高炉渣填料改良与孔隙率计算方法[J].地下空间与工程学报,2016,12(1):256-261. |
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| 作者姓名： | 刘香 吴永博 许有俊 黄大维 |
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| 作者单位： | 1.内蒙古科技大学 建筑与土木工程学院,内蒙古 包头 014010;2.包头钢铁<集团>规划发展部,内蒙古 包头 014010;3.华东交通大学 铁路环境振动与噪音教育部工程研究中心,南昌 330013 |
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| 基金项目： | 内蒙古自然科学基金(2013MS0730) |
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| 摘 要： | 由于高炉渣颗粒粒径大、级配性能差,某地基换填工程通过掺拌粉煤灰、碾压及重锤夯实对高炉渣进行了填料改良。通过对填料颗粒分析表明:碾压与重锤夯实的分层厚度合理;改良后的填料级配得到了改善,填料物理改良效果良好;因细颗粒含量不足,填料化学改良效果不良。填筑体内部孔隙组成及其对压实质量的影响分析表明,土体的粒间孔隙体积与土体总体积的比值作为压实质量评价的孔隙率指标更加合理,并提出了采用蜡封法测定高炉渣颗粒内部孔隙的相关计算公式。
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| 关 键 词： | 高炉废渣 重锤夯实 填料改良 地基处理 |
| 收稿时间： | 2015-04-15 |
Improvement of the Blast Furnace Slag Filler and Computation Method for the Porosity |
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| Liu Xiang,Wu Yongbo,Xu Youjun,Huang Dawei.Improvement of the Blast Furnace Slag Filler and Computation Method for the Porosity[J].Chinese Journal of Underground Space and Engineering,2016,12(1):256-261. |
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| Authors: | Liu Xiang Wu Yongbo Xu Youjun Huang Dawei |
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| Affiliation: | 1.School of Architecture and Civil Engineering, Inner Mongolia University of Science and Technology, Baotou, Inner Mongolia 014010, P. R. China; 2.Baotou Iron and Steel Group Planning and Development Department, Baotou, Inner Mongolia 014010, P. R. China;3.Engineering Research Center of Railway Environment Vibration and Noise, Ministry of Education, East China Jiaotong university, Nanchang 330013, P. R. China |
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| Abstract: | Large particle size and bad grading performance are the characters of the blast furnace slag. One of the replacement method for foundation treatment project has improved the filler of the blast furnace slag by blending coal ash, compacting and heavy tamping. Particle size analysis result shows that, compacting and heavy tamping stratified thickness is reasonable. Grading performance of the filler has been improved and the physical improvement effectiveness is favorable. For the insufficient of fine particles, the chemical improvement effectiveness is not favorable. The analysis of the gap composition for the filling foundation and how it influences the compaction quality shows that, the ratio of the volume of gap among particles to the total volume of the filler used as the index of porosity is more reasonable. Besides, relevant computational formulas for the inner pore of blast furnace slag particles by the wax-sealing method have been given. |
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| Keywords: | blast furnace slag heavy tamping filler improving foundation treatment |
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