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首页> 外文期刊>Journal of the South African Institution of Civil Engineers >Towards modelling road surfacing seal performance: performance testing and mechanistic behavioural model
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Towards modelling road surfacing seal performance: performance testing and mechanistic behavioural model

机译：建模道路表面密封性能：性能测试和机械行为模型

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Pavement designers have a choice of two types of wearing course: either an asphalt wearing course or a surfacing seal. While asphalt surfacing design has received much attention, road seal design has remained dependent on empirical modelling and experience. With the modern trend of increased traffic loading and contact stresses, varying oil resources and related refining processes and by-products, it is postulated that current seal design assumptions and practice may not be directly applicable to the changing situation in practice, and require re-examination (Milne 2004). In 1998 performance testing of road surfacing seals was initiated under the Chair in Pavement Engineering, University of Stellenbosch. The model mobile load simulator (MMLS3) was identified and a test method developed. From 1998 to 2002 a test regime using five different seal binders and three temperature regimes was implemented. A method of evaluating seal performance was developed to enable evaluation of the seals' behaviour. This paper presents a summary of the test results and provides an insight to the performance of the different seal binders under similar imposed loads and environment. Insight is provided for the identification of critical seal performance influences and criteria. A comparative performance test protocol was developed, with an initial seal performance visual assessment method.
机译：路面设计师可以选择两种类型的磨损层：沥青磨损层或表面密封层。尽管沥青路面设计受到了广泛关注，但道路密封设计仍依赖于经验建模和经验。随着现代交通流量和接触压力的增加，石油资源的变化以及相关的炼油工艺和副产品的发展趋势，目前的密封设计假设和实践可能无法直接适用于变化中的实际情况，因此需要重新设计。考试（Milne 2004）。 1998年，在斯泰伦博斯大学路面工程系主任的主持下开始了道路路面密封的性能测试。确定了模型移动负载模拟器（MMLS3），并开发了一种测试方法。从1998年到2002年，实施了使用五种不同的密封粘合剂和三种温度方案的测试方案。开发了一种评估密封性能的方法，以能够评估密封的性能。本文提供了测试结果的摘要，并提供了在相似的施加载荷和环境下不同密封粘合剂性能的见解。提供洞察力来识别关键的密封性能影响和标准。使用初始密封性能视觉评估方法，开发了比较性能测试协议。

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