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| 水泥稳定粒料水泥剂量EDTA滴定方法的研究 | |
| 引用本文： | 沈卫国,周明凯,杨志峰,余秀峰.水泥稳定粒料水泥剂量EDTA滴定方法的研究[J].公路,2007(3):46-50. |
| 作者姓名： | 沈卫国 周明凯 杨志峰 余秀峰 |
| 作者单位： | 1. 武汉理工大学硅酸盐工程教育部重点实验室,武汉市,430070 2. 交通部公路研究所,北京市,100088;武汉理工大学材料学院,武汉市,430070 3. 武汉理工大学材料学院,武汉市,430070 |
| 摘 要： | 水泥剂量对水泥稳定粒料路面基层材料性能的影响较大.由于一些试验工作者对试验方法的理解程度和操作水平的差异,水泥剂量的试验结果存在较大的离散,难以起到控制生产质量的目的.对EDTA滴定法的原理进行了阐述,并研究了影响EDTA滴定法数据离散性的因素.研究表明:用2.36 mm粒径以下颗粒绘制的标准曲线离散比较小,不同粒级颗粒的EDTA消耗量相差很大,取样的代表性是试验成功的关键.就此,提出了一种取样方式,大幅度降低了EDTA滴定法测试水泥剂量的离散性,增大了水泥剂量滴定值的可信度. |
| 关 键 词： | 水泥稳定粒料 EDTA滴定法 原理 离散性 |
| 文章编号： | 0451-0712（2007）03-0046-04 |
| 修稿时间： | 2006-11-07 |
A Study on EDTA Titration Testing Method of Cement Dosage of Cement Stabilized Granular Soil |
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| SHEN Wei-guo,ZHOU Ming-kai,YANG Zhi-feng,YU Xiu-feng.A Study on EDTA Titration Testing Method of Cement Dosage of Cement Stabilized Granular Soil[J].Highway,2007(3):46-50. | |
| Authors: | SHEN Wei-guo ZHOU Ming-kai YANG Zhi-feng YU Xiu-feng |
| Institution: | 1. Key Laboratory for Silicate Materials Science and Engineering of Ministry of Education, Wuhan University of Technology, Wuhan 430070, China; 2. Research Institute of Highway of Ministry of Communication, Beijing 100088, China; 3. Material Science and Engineering School, Wuhan University of Technology, Wuhan 430070, China |
| Abstract: | The cement dosage of the cement stabilized granular soil plays a very important role in the performance of road base course material.The detecting results of cement dosage have a very high dispersal coefficient because the experimentalists have different understanding on the testing method and have different operating level.The dispersal coefficient is too high to act as a controlling index to assure the quality of road base course.In this paper the mechanism of the EDTA titration method is expatiated and the affecting factor on result dispersal coefficient of the cement dosage testing is studied.The conclusion can be drawn that the standard curve obtained from <2.36 mm particles is more precise.The EDTA consumption is very variational when the size of the particle is varied.A method named sieving proportion can reduce the dispersal coefficient and obtain very exact and believable test result. |
| Keywords: | cement stabilized granular soil EDTA titration method principium dispersion |
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