Mechanistic Studies of Asphalt Aging Aimed at the Discovery of Anti-aging Additives

沥青老化机理研究旨在发现抗老化添加剂

基本信息

  • 批准号:
    RGPIN-2018-03730
  • 负责人:
  • 金额:
    $ 2.11万
  • 依托单位:
  • 依托单位国家:
    加拿大
  • 项目类别:
    Discovery Grants Program - Individual
  • 财政年份:
    2019
  • 资助国家:
    加拿大
  • 起止时间:
    2019-01-01 至 2020-12-31
  • 项目状态:
    已结题

项目摘要

Asphalt pavements constructed for municipal, provincial and national agencies today rarely last as long as they did 25 years ago. Some regions have seen lifespans shrink by as much as 50-60% (Annual Report, Auditor General of Ontario, 2016), largely due to poor practices and materials. The decline is due to heavier traffic, anomalous weather (extreme summer/winter temperatures), lack of knowledge among agency staff leading to the use of inadequate specifications, and the “greening” of our roads through the incorrect and/or irresponsible use of certain recycled materials. Across Canada, ~$120 billion-worth of roads are in fair, poor or very poor state (Canadian Infrastructure Report Card, 2016).******Since 2004, my group has developed rigorous specification standards and implemented them to great effect in numerous user agencies in Ontario and abroad. We now need to investigate how to mitigate aging with effective additives to further reduce cracking.******Our short-term objective is to understand how to better assess thermoreversible aging by monitoring the precipitation of waxes, resins and asphaltenes in asphalt at ambient and cold temperatures. In a first for this sector, we will use innovative infrared spectroscopy methods developed to monitor wax and asphaltene precipitation in crude oils to measure wax and asphaltene precipitation in asphalt. ******We will study gel formation by measuring properties for asphalt that has been chemically aged to varying degrees with sophisticated rheological methods. Factors defining the onset of gelation will provide a more accurate measure of when asphalt becomes prone to cracking than those currently used for specification grading.******We will also study irreversible aging to add evidence to longstanding disputes in the literature on how asphalts react with oxygen and harden over time. We will use oxygen-17 nuclear magnetic resonance spectroscopy, again for the first time in this sector, together with more conventional proton, carbon-13 and silicon-29 spectroscopy, in both one and two dimensions. We will use isotope enriched protective groups where feasible. ******As a long-term goal, we will evaluate the use of wax inhibitors, dispersants, antioxidants and unconventional base asphalts to mitigate aging, and use the spectroscopic, thermal and rheological analysis techniques to assess the effectiveness of our innovative anti-aging additives.******This research program will reduce cracking distress in pavements and provide a more sustainable, durable road infrastructure. Federal, provincial and municipal governments, as well as the general public in Canada and abroad, will achieve enormous savings on future infrastructure expenditures, reduce travel delays and improve road safety. The embedded training program will give students a highly desirable set of transferable skills and sought-after knowledge that will give them a competitive edge in the work force.**
如今,为市、省和国家机构建造的沥青路面很少能像 25 年前那样耐用。一些地区的寿命缩短了 50-60%(安大略省审计长年度报告,2016 年),这主要是由于不良的做法和材料。下降的原因是交通拥堵、异常天气(极端的夏季/冬季气温)、机构工作人员缺乏知识导致使用不充分的规格,以及通过不正确和/或不负责任地使用某些回收材料来“绿化”我们的道路。在加拿大各地,价值约 1200 亿美元的道路处于一般、较差或非常差的状态(加拿大基础设施报告卡,2016 年)。****** 自 2004 年以来,我的团队制定了严格的规范标准,并在安大略省和国外的众多用户机构中实施,取得了巨大的效果。我们现在需要研究如何使用有效的添加剂来减轻老化,以进一步减少开裂。******我们的短期目标是了解如何通过监测环境温度和低温下沥青中蜡、树脂和沥青质的沉淀来更好地评估热可逆老化。在该领域,我们将首次使用创新的红外光谱方法来监测原油中的蜡和沥青质沉淀,以测量沥青中的蜡和沥青质沉淀。 ******我们将通过复杂的流变方法测量已不同程度化学老化的沥青的特性来研究凝胶形成。与目前用于规格分级的因素相比,定义凝胶化开始的因素将提供更准确的测量沥青何时容易开裂的方法。******我们还将研究不可逆老化,为文献​​中关于沥青如何与氧气反应并随着时间的推移而硬化的长期争议添加证据。我们将在该领域首次使用氧 17 核磁共振光谱,以及更传统的一维和二维质子、碳 13 和硅 29 光谱。在可行的情况下,我们将使用富含同位素的保护基团。 ******作为一个长期目标,我们将评估使用蜡抑制剂、分散剂、抗氧化剂和非常规基础沥青来减轻老化,并使用光谱、热和流变分析技术来评估我们创新的抗老化添加剂的有效性。********该研究计划将减少路面的开裂问题,并提供更可持续、更耐用的道路 基础设施。联邦、省和市政府以及加拿大国内外的公众将在未来的基础设施支出上节省大量资金,减少出行延误并改善道路安全。嵌入式培训计划将为学生提供一套非常理想的可转移技能和广受欢迎的知识,这将使他们在劳动力中获得竞争优势。 **

项目成果

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Hesp, Simon其他文献

Hesp, Simon的其他文献

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{{ truncateString('Hesp, Simon', 18)}}的其他基金

Mechanistic Studies of Asphalt Aging Aimed at the Discovery of Anti-aging Additives
沥青老化机理研究旨在发现抗老化添加剂
  • 批准号:
    RGPIN-2018-03730
  • 财政年份:
    2022
  • 资助金额:
    $ 2.11万
  • 项目类别:
    Discovery Grants Program - Individual
Mechanistic Studies of Asphalt Aging Aimed at the Discovery of Anti-aging Additives
沥青老化机理研究旨在发现抗老化添加剂
  • 批准号:
    RGPIN-2018-03730
  • 财政年份:
    2021
  • 资助金额:
    $ 2.11万
  • 项目类别:
    Discovery Grants Program - Individual
Mechanistic Studies of Asphalt Aging Aimed at the Discovery of Anti-aging Additives
沥青老化机理研究旨在发现抗老化添加剂
  • 批准号:
    RGPIN-2018-03730
  • 财政年份:
    2020
  • 资助金额:
    $ 2.11万
  • 项目类别:
    Discovery Grants Program - Individual
Mechanistic Studies of Asphalt Aging Aimed at the Discovery of Anti-aging Additives
沥青老化机理研究旨在发现抗老化添加剂
  • 批准号:
    RGPIN-2018-03730
  • 财政年份:
    2018
  • 资助金额:
    $ 2.11万
  • 项目类别:
    Discovery Grants Program - Individual
Novel Asphalt Cement Test Methods and Compositions for Improved Flexible Pavement Performance
用于改进柔性路面性能的新型沥青水泥测试方法和组合物
  • 批准号:
    122240-2013
  • 财政年份:
    2017
  • 资助金额:
    $ 2.11万
  • 项目类别:
    Discovery Grants Program - Individual
Investigation of a million tonnes of Ontario hot mix asphalt (2015-2018)
安大略省百万吨热拌沥青调查(2015-2018)
  • 批准号:
    484450-2015
  • 财政年份:
    2016
  • 资助金额:
    $ 2.11万
  • 项目类别:
    Collaborative Research and Development Grants
Novel Asphalt Cement Test Methods and Compositions for Improved Flexible Pavement Performance
用于改进柔性路面性能的新型沥青水泥测试方法和组合物
  • 批准号:
    122240-2013
  • 财政年份:
    2015
  • 资助金额:
    $ 2.11万
  • 项目类别:
    Discovery Grants Program - Individual
Investigation of a million tonnes of Ontario hot mix asphalt (2015-2018)
安大略省百万吨热拌沥青调查(2015-2018)
  • 批准号:
    484450-2015
  • 财政年份:
    2015
  • 资助金额:
    $ 2.11万
  • 项目类别:
    Collaborative Research and Development Grants
Novel Asphalt Cement Test Methods and Compositions for Improved Flexible Pavement Performance
用于改进柔性路面性能的新型沥青水泥测试方法和组合物
  • 批准号:
    122240-2013
  • 财政年份:
    2014
  • 资助金额:
    $ 2.11万
  • 项目类别:
    Discovery Grants Program - Individual
Effect of warm mix additives on asphalt cement, asphalt rubber and asphalt mixture quality and durability
温拌添加剂对沥青水泥、沥青橡胶及沥青混合料质量和耐久性的影响
  • 批准号:
    434768-2012
  • 财政年份:
    2014
  • 资助金额:
    $ 2.11万
  • 项目类别:
    Collaborative Research and Development Grants

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