土工基础

›› 2016, Vol. 30 ›› Issue (3): 399-402.

• 工程实录 • 上一篇    下一篇

高岭石矿山风化砂土对水泥胶砂速凝性能影响的试验探究

刘海峰1，钱 玮2，朱长歧1，王 星1，李小刚3，吴文娟1   

  1. (1.中国科学院武汉岩土力学研究所，岩土力学与工程国家重点实验室，武汉 430071；
    2.海军海防工程研究中心，北京 100071；3.桂林理工大学，土木与建筑工程学院，广西桂林 541004）
  • 收稿日期:2016-03-09 修回日期:2016-03-21 出版日期:2016-06-20 发布日期:2016-06-21
  • 作者简介:刘海峰（1989- ），男，在读博士研究生，研究方向为海洋工程地质。

Weathered Fine Aggregates from a Kaolinite Mineral Mine on Fast Setting Properties of Cement Mortar

LIU Haifeng1, QIAN Wei2， ZHU Changqi1, WANG Xing1, LI Xiaogang3, WU Wenjuan1   

  1. (1.State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan，Hubei 430071, China;
    2.Research Center of Coastal Defense Engineering，Beijing100071；
    3. College of Civil Engineering and Architecture, Guilin University of Technology, Guilin, Guangxi 541004, China)
  • Received:2016-03-09 Revised:2016-03-21 Online:2016-06-20 Published:2016-06-21

摘要： 对取自江西省玉山县高岭石矿山的风化砂土进行了室内物理力学试验，试验表明砂土的矿物成分以蒙脱石矿物为主，含量为35%。得到砂土的元素组成和含量，其中铝元素的含量在11%左右。M10等级的混合砂浆试验结果表明，当砂土和速凝剂的占胶比相同时，砂土细粒组作为灰膏的混合砂浆试块的平均7 d抗压强度高于掺拌速凝剂的混合砂浆试块。但当砂土占胶比增大时，胶砂的强度减小，说明砂土不能完全替代水泥做为胶砂的胶灰，掺合比例应按照混合胶砂强度等级予以考虑。

关键词: 风化砂土, 蒙脱石, 速凝剂, 混合砂浆, 抗压强度

Abstract: This paper described indoor physical and mechanical test for kaolinite mineral weathered sandy soil from Yushan county in Jiangxi province. The XRay Diffractomer (XRD) test showed that mineral composition of sandy soil is mainly composed by montmorillonite mineral, content of 35%. The Xray Fluorescence Spectrometer (XRF) test got the composition and content of elements of the sandy soil, including the content of aluminum in around 11%. In order to compare the quicksetting effect of the sand silt group with accelerator, mixed mortar test M10 grades were carried out. Test results show that the average of 7 d compressive strength of mixed mortar test block mixed with sandy soil fine group as plaster was higher than that mixed with accelerator when sandy soil and accelerator at the same proportion of gelatinous material. But the strength of the mortar was reduced when the cement ratio of sand soil increased. This illustrated that sandy soil can't completely replace cement as mortar gelatinous material, and the proportion should be considered according to the mixed mortar strength grade.

Key words: Weathered Sandy soil, Montmorillonite, Accelerator, Composite Mortar, Compressive Strength