改进的石灰土剂量检测制样方法及验证
Suggestion and verification of the modified sample preparation methods of the lime-content testing of lime soil
-
摘要: 针对路基石灰剂量检测不准确的问题，结合路基土的实际工作及环境状态，从压实度、拌灰含水率及养护方法入手，全面分析了现行EDTA消耗量检测制样方法的不合理性，依据分析结论对现行EDTA消耗量检测的制样方法进行改进，提出了一套针对路基实际工作环境的EDTA消耗量检测的制样方法，采用2种土类（非膨胀土与膨胀土）进行了2种制样方法的灰剂量检测对比试验，结果显示，采用改进后的EDTA消耗量检测制样方法所测得的灰剂量随着时间的衰减率明显小于规范的制样方法，可以较准确地检测出土样的灰剂量，证明了改进制样方法的合理性。Abstract: The inaccurate problem of lime-content testing in lime soil subgrade is examined in combination of the actual environmental status of subgrade soil. By examining the compaction degree and water content of the mixed ash and the maintenance methods, the irrationality of sample preparation methods in the current lime-content testing are analyzed, and the preparation methods of EDTA consume testing is modified and a set methods of EDTA consumption sample preparation considering the work environment of subgrade is proposed. The comparison tests of different lime-content in two preparation methods are conducted. The results show that the attenuation ratio of the verification methods of EDTA consumption is less than that of the specification methods. The former can accurately test the lime-content of soil. The modified sample preparation is more reasonable. It offers a preparation methods of lime-content testing in subgrade which is suitable to the practical engineering.
-
-
[1] ［1］李朝辉,程谦恭,王艳涛,等.干湿循环下石灰改良膨胀土离心模型试验研究［J］.水文地质工程地质，2017,44(4):111- 117. ［LI Z H, CHENG Q G, WANG Y T, et al. A Centrifugal Model Test Study of Lime-improved Expansive Soil under Drying and Wetting Circles［J］.Hydrogeology ＆ Engineering Geology,2017,44(4):111-117.(in Chinese)］
[2] ［2］黄震,陈铖.改良膨胀土胀缩裂隙及与抗剪强度的关系研究［J］.水文地质工程地质,2016,43(3):87-93. ［HUANG Z, CHEN C. A Study of the Swelling Shrinkage Cracks of the Modified Expansive Soil and Its Relationship with the Shear Strength［J］. Hydrogeology ＆ Engineering Geology, 2016,43(3):87-93.(in Chinese)］
[3] ［3］张福海,王保田,张文慧,等.石灰改良膨胀土的灰剂量衰减规律研究［J］.公路交通科技,2006,23(12):50-53. ［ZHANG F H, WANG B T, ZHANG W H, et al. Study on Lime Content Reduction Regularity in Lime Stabilized Soil［J］.Journal of Highway and Transportation Research and Development,2006,23(12):50-53.(in Chinese)］
[4] ［4］向文俊,刘爱兰,吴育琦,等.改良土二次掺灰工艺的石灰剂量检测方法［J］.河海大学学报(自然科版),2004,32(3):313- 315. ［XIANG W J, LIU A L, WU Y Q, et al. Detecting Method for Lime Content in the Two-step Lime Mixing Technology of Stabilized Soil［J］.Journal of Hohai University (Natural Sciences),2004,32(3):313-315.(in Chinese)］
[5] ［5］郭大进,程霞,陈君,等.稳定土中水泥或石灰剂量衰减问题的研究［J］.公路交通科技,2002,19(10):39-41. ［GUO D J, CHENG X, CHEN J, et al. Research on Content Attenuation in Lime or Cement Treated Base［J］.Journal of Highway and Transportation Research and Development, 2002,19(10):39-41.(in Chinese)］
[6] ［6］赵玮,杨扬,沈晓平,等.石灰改良土灰剂量衰减规律试验研究［J］. 现代交通技术,2011,8(6):20-22. ［ZHAO W, YANGY, SHEN X P, et al. Study on Lime Content Reduction Regularity in Lime Stabilized Soil［J］.Modern Transportation Technology,2011,8(6):20-22.(in Chinese)］
[7] ［7］刘瑞,王家鼎,王新忠.石灰改良弱膨胀土击实特性试验研究［J］.工程地质学报,2013,21(6):864-870. ［LIU R, WANG J D, WANG X Z. Test Study of Compact Characteristic in Lime-tread Weak Expansive Soil［J］.Journal of Engineering Geology,2013,21(6):864-870.(in Chinese)］
[8] ［8］张文慧,王保田,张福海.改良膨胀土筑堤压实度控制标准研究［J］.河海大学学报（自然科学版）,2005,33(3):198-201. ［ZHANG W H, WANG B T, ZHANG F H. Compaction Degree Control Standard for Stabilized Expansive Soil in Embankment Construction［J］.Journal of Hohai University (Natural Sciences),2005,33(3):198-201.(in Chinese)］
[9] ［9］郑健龙,张锐.公路膨胀土路基变形预测与控制方法［J］.中国公路学报，2015,28(3):1-10. ［ZHENG J L, ZHANG R. Prediction and Control Method for Deformation of Highway Expansive Soil Subgrade［J］.China Journal of Highway and Transport,2015,28(3):1-10.(in Chinese)］
-
期刊类型引用(5)
1. 王众，樊晓军，潘旋，章定文. 粉土石灰联合改良膨胀土路基填筑质量控制. 公路. 2023(06): 171-176 . 
百度学术
2. 边加敏. 石灰改良膨胀土重塑后的工程特性研究. 四川建筑科学研究. 2021(04): 62-70 . 百度学术
3. 严卓辉，解长渊. EDTA法检测路基石灰改良土影响因素分析. 公路工程. 2020(05): 193-196 . 百度学术
4. 刘凤翰，陈晓玲. 有效控制路基施工的EDTA标准曲线绘制方法研究. 中外公路. 2019(05): 27-30 . 百度学术
5. 刘浪涛，张宇宇. 灰土路基布灰机控制灰剂量施工工法. 公路交通科技(应用技术版). 2018(09): 27-30 . 百度学术
其他类型引用(0)
计量
- 文章访问数: 870
- HTML全文浏览量: 10
- PDF下载量: 482
- 被引次数: 5
下载:
邮件订阅
RSS