长江科学院院报 ›› 2014, Vol. 31 ›› Issue (7): 109-113.DOI: 10.3969/j.issn.1001-5485.2014.07.021

• 水利工程建设与管理 • 上一篇    下一篇

水泥含量测定法控制水泥搅拌桩施工质量研究

王保田a,b,宋为广a,b,赵辰洋a,b,杜妍平a,b   

  1. 河海大学 a. 岩土力学与堤坝工程教育部重点实验室;b.岩土工程科学研究所,南京 210098
  • 收稿日期:2013-09-26 修回日期:2014-07-03 出版日期:2014-07-01 发布日期:2014-07-01
  • 作者简介:王保田(1963-),男,湖北浠水人,教授,博士生导师,主要从事边坡稳定与路基改良加固方面的研究与教学工作,(电话)13951798068 (电子信箱)btwang1010@126.com。

Quality Control for Cement Mixing Pile Construction by Cement Dosage Detection

WANG Bao-tian1,2,SONG Wei-guang1,2,ZHAO Chen-yang1,2,DU Yan-ping1,2   

  1. 1. Key Laboratory of Ministry of Education for Geomechanics and Embankment Engineering, Hohai University, Nanjing 210098, China;
    2. Geotechnical Research Institute, Hohai University, Nanjing 210098, China
  • Received:2013-09-26 Revised:2014-07-03 Published:2014-07-01 Online:2014-07-01

摘要: 目前,水泥搅拌桩施工质量常规检测方法存在时间长,费用高,过程繁琐等缺点。EDTA滴定法具有检测速度快,成本低的优点,已广泛运用于公路工程水泥含量检测。通过分析龄期、养护条件等因素对EDTA滴定的影响;并研制出新型桩芯取样装置,EDTA滴定法已成功运用于水泥搅拌桩水泥含量检测。杨林船闸工程试验桩检测表明该方法能有效检测水泥搅拌桩水泥含量和搅拌均匀性。将水泥含量搅拌均匀性作为水泥搅拌桩质量评判指标,能够直观反映水泥搅拌桩施工质量,并且具有检测速度快、成本低的优点,从而达到及时控制施工质量的目的。

关键词: 水泥搅拌桩, 水泥含量, EDTA滴定法, 质量检验

Abstract: Conventional methods of detecting the quality of cement mixing piles are time-consuming, high-costing and complicated; while EDTA titration has been widely used in the cement content detection for road engineering with its rapid detection and low cost. We have successfully applied EDTA titration to the cement content detection for mixing piles by analyzing the effect of age and curing condition on the detection result and by developing a new sampling device for pile core. Its application to Yanglin shiplock project showed that cement dosage and mixing uniformity in depth of the mixing pile can be detected effectively with this method. Mixing uniformity as an assessment index of pile quality could reflect the construction quality of piles directly and timely.

Key words: cement mixing piles, cement dosage, EDTA titration, quality detection

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