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Investigations to evaluate the performance of four selected stabilization methods on soft subgrade soils of southeast Arlington (Texas).

机译：评估四种选定的稳定方法在东南阿灵顿（德克萨斯州）软土路基上的性能的调查。

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摘要

Subgrade soils of southeast Arlington, Texas exhibit high PI characteristics; low strength properties and high swell characteristics. All these poor properties of subgrade soils often affect the long-term performance of the pavement infrastructure built on such soils. Annual maintenance and repair costs of the distressed pavements are quite high. Additionally, the pavement distress result in pavement ponding problems, riding discomforts and possible traffic delays due to repair jobs. Hence, it is necessary to review and explore new and alternate stabilization methods for providing better stabilization of soft and expansive soils, which will provide better foundation subgrades for pavements.; A laboratory research study was designed and conducted to investigate the effectiveness of four stabilizers (Class F Fly Ash, Sulfate Resistant Cement Type V, Ground Granulated Blast Furnace Slag or GGBFS and Lime with Fibers). As a part of the research, four different subgrade soils from Walnut Creek, Quail Creek, South Cooper Estate East, and South Cooper Estate West locations in Southeast Arlington were used as control soils. Both stabilizer dosage levels and curing periods were studied for providing optimum stabilization to the soils.; Strength, swell and shrinkage as well as Atterberg tests were conducted on both raw and stabilized soil samples. Test results were statistically analyzed to assess the effectiveness of stabilization methods in enhancing soil strength and reducing swell and shrinkage characteristics. All stabilizers provided statistically significant improvements. Also, analyses were conducted to rank these four stabilizers for providing best stabilization: Sulfate resistant cement, followed by lime with fibers and GGBFS stabilization methods were ranked as top three performers in the present laboratory evaluations. Cost details of the four stabilization methods, and future research studies including field studies are discussed.
机译：德克萨斯州阿灵顿东南部的路基土壤表现出较高的PI特性。低强度特性和高膨胀特性。路基土壤的所有这些不良特性通常会影响在此类土壤上建造的路面基础设施的长期性能。不良路面的年度维护和修理费用很高。另外，路面窘迫导致路面积水问题，乘坐不适以及由于维修工作可能导致的交通延误。因此，有必要审查和探索新的和替代的稳定方法，以更好地稳定软土地基和膨胀土，这将为人行道提供更好的地基。设计并进行了一项实验室研究，以研究四种稳定剂（F级粉煤灰，V型抗硫酸盐水泥，高炉矿渣粉或GGBFS和纤维石灰）的有效性。作为研究的一部分，使用了东南阿灵顿的Walnut Creek，Quail Creek，South Cooper Estate East和South Cooper Estate West地区的四种不同的路基土壤作为控制土壤。研究了稳定剂的用量和固化时间，以便为土壤提供最佳的稳定性。在原始和稳定的土壤样品上均进行了强度，膨胀和收缩以及Atterberg试验。对测试结果进行统计分析，以评估稳定方法在增强土壤强度和减少膨胀和收缩特性方面的有效性。所有稳定剂均提供了统计上显着的改进。此外，进行了分析以对这四种稳定剂进行排序，以提供最佳的稳定性：抗硫酸盐水泥，其次是纤维石灰和GGBFS稳定方法，在本实验室评估中排名前三。讨论了四种稳定方法的成本细节，以及包括现场研究在内的未来研究。

著录项

  • 作者

    Wattanasanticharoen, Ekarin.;

  • 作者单位

    The University of Texas at Arlington.;

  • 授予单位 The University of Texas at Arlington.;
  • 学科 Engineering Civil.; Geology.; Geotechnology.
  • 学位 M.S.
  • 年度 2000
  • 页码 190 p.
  • 总页数 190
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 建筑科学;地质学;地质学;
  • 关键词

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