• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Transportation Research Record >Ruggedness Evaluation of the Dynamic Angle Validation Kit for Superpave Gyratory Compactors
【24h】

Ruggedness Evaluation of the Dynamic Angle Validation Kit for Superpave Gyratory Compactors

机译：Superpave回转压实机动态角度验证套件的坚固性评估

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Superpave~® hot-mix asphalt (HMA) specimens are compacted in the laboratory with the Superpave gyratory compactor (SGC). The SGC compacts specimens through application of pressure and an applied angle of gyration. The original compaction specification for the SGC requires the angle of gyration to be 22 ± 0.35 mrad (1.25° ± 0.02°), measured externally against the compaction mold. Questions about the ability of different compactors to produce HMA specimens of the same mix having the same density led to development of the dynamic angle validation (DAV) kit, which measured the angle of gyration internally (on the inside of the mold). Two task groups were formed independently to develop a standard specification for DAV usage; the groups combined efforts and produced AASHTO PP48, with a companion ASTM specification slated for consideration in the fall of 2003. The specifications did not include a statement of precision and bias. The task groups conducted a ruggedness study using the guidelines contained in ASTM C-1067 and E-1169. Factors considered in the ruggedness study included height of mix used in the mold with the DAV, number of gyrations used to determine the angle of gyration, operating temperature of the DAV, and the nominal maximum aggregate size of the mix used with the DAV. Six SGC models were included in the study. The ruggedness study showed no factor significantly affected the DAV-measured angle. The findings clear the way for a planned interlaboratory study to establish the precision of the angle of gyration measured with the DAV.
机译：Superpave®热混合沥青（HMA）标本在实验室中用Superpave旋转压实机（SGC）压实。 SGC通过施加压力和施加旋转角度来压实样品。 SGC的原始压紧规范要求回转角度为22±0.35毫拉德（1.25°±0.02°），是从外部对压实模具测量的。有关不同压实机生产具有相同密度的相同混合物的HMA标本的能力的疑问，导致了动态角度验证（DAV）套件的开发，该套件可在内部（在模具内部）测量旋转角度。独立成立了两个任务组，以开发DAV使用的标准规范。这两个小组共同努力，生产了AASHTO PP48，并在2003年秋季考虑了相关的ASTM规范。该规范未包括精度和偏差的说明。工作组使用ASTM C-1067和E-1169中包含的指南进行了耐用性研究。耐用性研究中考虑的因素包括与DAV一起在模具中使用的混合物的高度，用于确定回转角度的回转数，DAV的工作温度以及与DAV一起使用的混合物的标称最大骨料尺寸。该研究包括六个SGC模型。耐用性研究表明，没有因素显着影响DAV测量的角度。这些发现为计划中的实验室间研究确定使用DAV测量的回转角的精确度扫清了道路。

著录项

  • 来源
    《Transportation Research Record》 |2004年第1891期|p.198-202|共5页
  • 作者

    Kevin D. Hall;

  • 作者单位

    University of Arkansas, Department of Civil Engineering, 4190 Bell Engineering Center, Fayetteville, AR 72701;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 交通运输;
  • 关键词

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号