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首页> 外文学位 >Stiffness characterization and life cycle analysis of reinforced asphalt pavements using falling weight deflectometer tests.
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Stiffness characterization and life cycle analysis of reinforced asphalt pavements using falling weight deflectometer tests.

机译：使用跌落偏折仪测试对加筋沥青路面的刚度特性和寿命周期分析。

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摘要

The western and northern parts of South Florida have shallow layers of organic and plastic soils under existing roads. These roads often exhibit large amount of cracking and distortion in a short period of time. Traditional repairs are often not practical due to high costs and extended construction time. In an effort to develop rehabilitation strategies that could be strictly applied to the surface layer, a pilot test site was selected along the alignment of SR 15/US 98 in northwest Palm Beach County, where severe pavement distresses were observed due to the presence of thick organic layers. PaveTrac MT-1, GlasGrid 8501, PetroGrid 4582, and ARMI were used as promising asphalt reinforcing products in 24 experimental pavement sections, including 8 control sections without any reinforcement. A comprehensive field testing and monitoring program involving FWD, rut and ride quality measurements was conducted at the preconstruction, 6-month post-construction, and 18-month post-construction stages. Due to large variability in the sub surface conditions, a statistics-based data analysis protocol was developed for performance evaluation and relative comparisons of the test sections and, in turn, reinforcing products. Post construction data from both 6 months and 18 months demonstrated that stiffness of reinforced sections were significantly higher than the control sections. Procedures were developed to identify and statistically quantify the benefits derived from the reinforcements only, so that the relative performance of various products could be monitored over time. Based on the field testing data available to date, a framework was developed in this study for the prediction of pavement life, which is essential for conducting a detailed Life Cycle Analysis.
机译：南佛罗里达州的西部和北部在现有道路下有浅层有机和可塑土壤。这些道路通常在短时间内会出现大量开裂和变形。由于高昂的成本和延长的施工时间，传统的维修通常不切实际。为了制定可严格应用于表层的修复策略，在西北棕榈滩县沿SR 15 / US 98的路线选择了一个试验场，由于存在厚实的路面而导致严重的路面窘迫有机层。 PaveTrac MT-1，GlasGrid 8501，PetroGrid 4582和ARMI被用作有希望的沥青增强产品，用于24个实验性路面部分，包括8个没有任何增强作用的控制部分。在施工前，施工后6个月和施工后18个月进行了包括FWD，车辙和行驶质量测量在内的全面的现场测试和监控程序。由于地下条件的变化很大，因此开发了基于统计的数据分析协议，用于性能评估和测试部分的相对比较，进而用于增强产品。 6个月和18个月的施工后数据表明，加强型材的刚度显着高于对照型材。开发了程序以识别和统计量化仅来自增强材料的收益，以便可以随时间监视各种产品的相对性能。基于迄今为止可用的现场测试数据，本研究开发了一个用于预测路面寿命的框架，这对于进行详细的生命周期分析至关重要。

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  • 作者

    Lima-Arie, Alex.;

  • 作者单位

    Florida Atlantic University.;

  • 授予单位 Florida Atlantic University.;
  • 学科 Engineering Civil.
  • 学位 M.S.
  • 年度 2010
  • 页码 148 p.
  • 总页数 148
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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