土工基础

›› 2018, Vol. 32 ›› Issue (4): 437-439.

• 工程实录 • 上一篇    下一篇

水泥基注浆材料的性能研究

葛延明1,2，3,隆 威1,2,宋会娟1,2   

  1. (1.中南大学有色金属成矿预测与地质环境监测教育部重点实验室，长沙 410083；
    2.中南大学地球科学与信息物理学院，长沙 410083；3.湖南省交通规划勘察设计院有限公司，长沙 410005)
  • 收稿日期:2017-06-28 出版日期:2018-08-20 发布日期:2018-08-23
  • 作者简介:葛延明（1991-），男，在读研究生，研究方向为地质工程。

Evaluation of the Performance of Cement Based Grouting Materials

GE Yanming1,2,3, LONG Wei1,2, SONG Huijuan1,2   

  1. (1.Key Laboratory of Metalogical Prediction of Nonferrous Metals and Geological；Environment Monitoring, 
    Ministry of Education, Central South University, Changsha 410083；
    2.School of Geosciences and InfoPhysics, Central South University, Changsha 410083；
    3.Hunan Provincial  Communication Planning Survey and Design Institute. Changsha Hunan410005)
  • Received:2017-06-28 Online:2018-08-20 Published:2018-08-23

摘要： 注浆的主要作用为防水堵漏和充填加固，其效果很大程度上由浆液性能决定。通过试验总结了浆液在不同水灰比、膨润土和外加剂掺量等因素作用下性能的变化规律。结果表明，影响浆液性能的最主要因素为水灰比；膨润土降低了浆液的流动度，掺量大于8%时显著降低结石体强度；减水剂对浆液流动性影响明显，掺量大于0.8%时显著增大析水率、降低结石率、增加凝结时间；水玻璃的添加使浆液的流动性能变差，增加水玻璃掺量，浆液析水率降低，结石率增加。

关键词: 注浆材料, 浆液性能, 结石率, 强度

Abstract: The main role of grouting for waterproof plugging and filling reinforcement and the results are largely determined by the performance of the grouting slurry. The performance of the slurry under different watercement ratios, bentonite and admixture content were summarized by conducting comparative tests. The results indicate that the main factor affecting the performance of the slurry is watercement ratio. The bentonite reduces the fluidity of the slurry, and the strength of the stone is significantly reduced when the cement content is more than 8%. The effect of the water reducing additives on the fluidity is obvious. The increase of the water content of the slurry will lead the increase of the water content of the slurry and the decrease of the cementation rate.

Key words: Grouting Material, Slurry Performances, Cementation Rate, Strength