土工基础

›› 2015, Vol. 29 ›› Issue (6): 20-24.

• 工程实录 • 上一篇    下一篇

应用于地基处理的高炉渣粉煤灰混合料物理性质研究

刘 香，吴成龙，许有俊，郭 鹏   

  1. （内蒙古科技大学建筑与土木工程学院,内蒙古包头 014010）
  • 收稿日期:2015-01-08 出版日期:2015-12-22 发布日期:2015-12-30
  • 作者简介:刘 香（1964-），女，教授，硕士，研究方向为组合结构、结构抗震。
  • 基金资助:

    基金项目：内蒙古自治区自然科学基金项目（2013MS0730）

Physical Properties of Fly-ash and Blast Furnace Slag Mixtures in the Soil Improvement

LIU Xiang, WU Chenglong, XU Youjun, GUO Peng   

  1. (College of Architecture and Civil Engineering; Inner Mongolia University of Science and Technology, Baotou 014010)
  • Received:2015-01-08 Online:2015-12-22 Published:2015-12-30

摘要： 以高炉矿渣粉煤灰地基填料为研究对象，通过颗粒分析试验，得到其颗粒级配组成情况，分析发现原矿渣级配不良，粒径相对单一且缺少细颗粒填料。采用分层碾压及强夯法处理后，混合料的颗粒级配得到明显的改善，属于级配良好的砾。利用标准重型击实试验测得高炉渣粉煤灰混合料的ρdmax、wop及k值，分析认为高炉渣粉煤灰混合料作为地基回填料的压实性能够满足要求。通过颗粒比重试验，测得高炉渣及高炉渣粉煤灰混合料的平均颗粒比重（密度）；鉴于高炉渣中细颗粒含量不容忽视，对规范中的平均颗粒比重公式进行了修正。

关键词: 高炉渣, 粉煤灰, 物理性质, 地基处理

Abstract: The blast furnace slag and flyash mixtures were used as the foundation fill. The grain size analysis on the mixtures indicates that the fill material is poor graded with the absence of finer grain material. The foundation fill was treated with dynamic compaction as well as the conventional compaction by a vibratory roller. After the treatment, the gradation of the fill materials have significantly improved to the well graded gravel materials. The maximum dry density, optimum moisture and the degree of compaction were obtained by the heavy dynamic penetrometer testing. The average specific gravity of the mixture was obtained from the specific gravity tests on both materials. The code used average specific gravity formula for the mixtures was corrected for the finer grain sized materials.

Key words: Blast Furnace Slags, Fly Ashes, Physical Properties, Soil Treatments