Development of a Geosynthetic Mechanical Stabilization Technique for Road Subgrade in Warming Cold Regions

暖寒地区路基土工合成材料机械稳定技术开发

• 批准号: 543459-2019
• 负责人: Fall, Mamadou
• 金额: $ 1.82万
• 依托单位: University of Ottawa
• 依托单位国家: 加拿大
• 项目类别: Engage Grants Program
• 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
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=680475
• 关键词: Development; Geosynthetic; Mechanical; Stabilization; Technique

Roads are of vital economic, social, and political importance in all Canadian regions. Subgrade is thefoundation of the road, thus it is the lowest and most important component of a road structure. Thegeotechnical stability or safety of road structures significantly relies on the strength, bearing capacity and settlement of the subgrade soils. However, extensive evidence exists of increase in soil freezing and thawing cycles in Canadian no-permafrost regions (underlie about half of Canada's landmass) over the past decades because of the climatic warming. This climate induced change in freezing and thawing cycles has been negatively affecting the performance of many subgrades of roads constructed in Canadian no-permafrost regions, increasing their maintenance costs, decreasing their useful life span, and jeopardizing the population safety and economic activities in those regions. Therefore, significant research and development efforts continue to be devoted to finding techniques for mitigating subgrade degradation induced by freezing/thawing cycles, and to properly and cost-effectively design roads in the warming Canadian cold regions. In the proposedcollaborative project between the University of Ottawa and the company, Titan Environmental Containment Ltd., a novel technique consisting of subgrade stabilization by using a new generation custom made Geogrid Composites (GC) will be developed and studied in this project. The development of the proposed new technique will open up the lucrative and immense market of building and maintaining road systems in the Canadian no-permafrost regions in light of global warming as well as in other regions. This will result in business opportunities for TITAN at both the national and international levels. Moreover, it is expected that the results of this project will have economic and social impacts on the Canadian no-permafrost regions. Furthermore, this project is fertile ground for the training of civil road engineering and climate change adaptation.

在所有加拿大地区，道路具有重要的经济，社会和政治重要性。子级是道路的基础，因此它是道路结构中最低，最重要的组成部分。地理技术稳定性或道路结构的安全性在很大程度上取决于亚地区土壤的强度，轴承能力和沉降。但是，由于气候变暖，在过去几十年中，加拿大无层状区域（加拿大大约一半的一半的加拿大地产）中，土壤冻结和解冻周期的增加有广泛的证据。这种气候引起的冰冻和解冻周期的变化一直对加拿大无层状区域建造的许多道路的绩效产生负面影响，增加了其维护成本，降低了其使用寿命，并危害了这些地区的人口安全和经济活动。因此，重大的研发工作继续致力于寻找通过冻结/融化周期引起的减少子分级降解的技术，以及在加拿大加拿大寒冷地区的正确和成本效益设计道路。在渥太华大学与公司之间的拟议审查项目中，Titan Environmental Contionment Ltd.将开发并在此项目中开发并研究了一种由新一代定制制造的地理综合材料（GC）组成的新型技术。拟议的新技术的开发将鉴于全球变暖以及其他地区，在加拿大无层面区域的建筑和维护道路系统的巨大和巨大的市场开发。这将为国家和国际层面的泰坦带来商机。此外，预计该项目的结果将对加拿大无层面区域产生经济和社会的影响。此外，该项目是培训民间道路工程和气候变化适应的肥沃基础。