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首页> 外文期刊>Road & Transport Research >Elastic strains, modulus and permanent deformation of foamed bitumen pavements in accelerated testing facility
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Elastic strains, modulus and permanent deformation of foamed bitumen pavements in accelerated testing facility

机译：加速测试设施中泡沫沥青路面的弹性应变，模量和永久变形

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摘要

An accelerated full-scale experiment on foamed bitumen (FB) pavements was conducted at the Canterbury Accelerated Pavement Testing Indoor Facility (CAPTIF) in New Zealand. The results of the CAPTIF experiment showed that the section with 2.8% bitumen content and 1% cement content (section B28C10) had the best performance. These results were published in a previous research paper. The current paper is the continuation of the previous work and aims to provide design and performance parameters that could be used by practitioners and researchers. The pavement strains were measured at different depths and transverse locations using pavement instrumentation. The measurements showed that subgrade strains are lower in section B28C10 and that the strain distribution in the subgrade is relatively uniform, reducing the strain concentrations in this layer. Falling Weight Deflectometer (FWD) measurements were used to determine an AASHTO 93 structural coefficient of 0.20 for the FB layer of section B28C10. FWD and pavement strain measurements were used to back-calculate the average elastic modulus of 1100 MPafortheFB layer. Finally, a permanent or plastic strain model was developed for the FB layer using the pavement vertical surface deformation measurements and post-mortem data.
机译：在新西兰的坎特伯雷加速路面试验室内设施（CAPTIF）上进行了泡沫沥青（FB）路面的加速全面试验。 CAPTIF实验的结果表明，沥青含量为2.8％，水泥含量为1％的截面（截面B28C10）具有最佳性能。这些结果发表在先前的研究论文中。本论文是先前工作的延续，旨在提供可供实践者和研究人员使用的设计和性能参数。使用路面仪表在不同深度和横向位置测量路面应变。测量结果表明，B28C10段的路基应变较低，并且路基中的应变分布相对均匀，从而降低了该层的应变浓度。落重偏转仪（FWD）测量用于确定B28C10部分的FB层的AASHTO 93结构系数为0.20。 FWD和路面应变测量用于反算FB层的1100 MPa的平均弹性模量。最后，使用路面垂直表面变形测量和验尸数据为FB层开发了永久或塑性应变模型。

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  • 来源
    《Road & Transport Research》 |2012年第3期|p.64-76|共13页
  • 作者

    Alvaro Gonzalez; Misko Cubrinovski; BryanPidwerbesky; David Alabaster;

  • 作者单位

    Universidad del Desarrollo Faculty of Engineering, Avenida La Plaza 680, Las Condes, Santiago 7610471, Chile;

    University of Canterbury, Christchurch, New Zealand;

    Fulton Hogan (Christchurch, New Zealand);

    New Zealand Transport Agency and manages the Canterbury Accelerated Pavement Testing Indoor Facility (CAPTIF);

  • 收录信息 美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
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