Predicting and Enhancing the Moisture-Damage Performance of Asphalt Mixtures

预测和增强沥青混合料的水分损坏性能

• 批准号: EP/G039100/1
• 负责人: Gordon Airey
• 金额: $ 37.73万
• 依托单位: University of Nottingham
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2009
• 资助国家: 英国
• 起止时间: 2009 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=EP%2FG039100%2F1
• 关键词: Predicting; Enhancing; Moisture; Damage; Performance

The overall aim of this research is to use a combination of thermodynamic surface free energy and adhesion fracture energy measurements to understand, predict and enhance the resistance to moisture-damage of asphalt mixture pavement materials. Moisture-damage of asphalt mixtures is directly associated with the adhesive and cohesive properties of the material and how the presence of water affects these mechanisms. Although mechanical test procedures exist to quantify the moisture-damage of asphalt mixtures, they do not measure the fundamental material properties related to adhesion and cohesion. This study will use a combination of adhesive fracture energy measurements on bitumen-aggregate and bitumen-filler mastic-aggregate systems using monotonically-loaded tests together with intrinsic adhesion calculations based on thermodynamic surface free energy concepts to produce a step change in the moisture-damage performance and material screening of asphalt mixtures. The introduction and development of these new methods and novel approaches will provide the tools needed for the better selection and moisture-damage prediction of appropriate pavement materials. The study will involve collaboration between researchers working in the areas of pavement engineering materials and the mechanical engineering aspects of adhesion, adhesives and composites. This combined approach will allow the exceptionally high expertise in asphalt technology, moisture-damage characterisation, surface energy and adhesive bond testing and modelling to contribute effectively to improving the understanding and prediction of moisture-damage in asphalt mixtures and thereby provide a tool to achieve the project goal of enhancing moisture-damage performance.

这项研究的总体目的是结合热力学表面自由能和粘附裂缝能量测量值，以理解，预测和增强沥青混合物路面材料的耐水性破坏性。沥青混合物的水分破坏与材料的粘合剂和凝聚力直接相关，以及水的存在如何影响这些机制。尽管存在机械测试程序来量化沥青混合物的水分破坏，但它们并未测量与粘附和内聚力相关的基本材料特性。这项研究将在沥青 - 聚集酸盐和沥青填充物乳胶胶结系统上结合使用单调装载测试以及基于热力学表面自由能概念的固有粘附计算，以产生水分损伤性能和材料筛分量混合物的材料效果。这些新方法和新方法的引入和开发将为更好的选择和损害适当的路面材料的预测提供所需的工具。该研究将涉及在路面工程材料领域工作的研究人员与粘附，粘合剂和复合材料的机械工程方面的合作。这种合并的方法将允许在沥青技术，水分破坏表征，表面能量和粘合键测试和建模方面具有极高的专业知识，从而有效地提高了对沥青混合物中水分破坏的理解和预测，从而为实现增强水分受损性能的项目目标提供了一种工具。

项目成果

Moisture damage in asphalt mixtures using the modified SATS test and image analysis

• DOI: 10.1016/j.conbuildmat.2013.02.003
• 发表时间: 2013-06
• 期刊: Construction and Building Materials
• 影响因子: 7.4
• 作者: Rawid Khan.;J. Grenfell;A. Collop;G. Airey;Hannah Gregory

Optimising the moisture durability SATS conditioning parameters for universal asphalt mixture application

• DOI: 10.1080/10298436.2012.655740
• 发表时间: 2012-08
• 期刊: International Journal of Pavement Engineering
• 影响因子: 3.8
• 作者: J. Grenfell;N. Ahmad;G. Airey;A. Collop;R. Elliott

Application of Fickian and non-Fickian diffusion models to study moisture diffusion in asphalt mastics

• DOI: 10.1617/s11527-014-0246-2
• 发表时间: 2015-05
• 期刊: Materials and Structures
• 影响因子: 3.8
• 作者: A. Apeagyei;J. Grenfell;G. Airey

Assessing asphalt mixture moisture susceptibility through intrinsic adhesion, bitumen stripping and mechanical damage

• DOI: 10.1080/14680629.2013.863162
• 发表时间: 2014-01-02
• 期刊: ROAD MATERIALS AND PAVEMENT DESIGN
• 影响因子: 3.7
• 作者: Grenfell, James;Ahmad, Naveed;Airey, Gordon
• 通讯作者: Airey, Gordon

Influence of aggregate mineralogical composition on water resistance of aggregate-bitumen adhesion

• DOI: 10.1016/j.ijadhadh.2015.06.012
• 发表时间: 2015-10-01
• 期刊: INTERNATIONAL JOURNAL OF ADHESION AND ADHESIVES
• 影响因子: 3.4
• 作者: Zhang, Jizhe;Apeagyei, Alex K.;Grenfell, James R. A.
• 通讯作者: Grenfell, James R. A.