Characterisation of granular base and sub-base pavement materials under cyclic loading

循环荷载下粒状基层和底基层路面材料的特性。路面施工是公路建设中造价较高的项目。直到最近，路面的设计都是基于经验规则和限制性材料规定。随着合理的机械路面设计方法的引入，有必要对路基材料在循环荷载作用下的性能进行可靠的评估。该项目的重点是非结合颗粒基层和底基层材料的特性。由于这些都是地质材料，岩土工程的概念，如应力路径的影响将被使用。该项目将以更低的成本建造更好的道路，并在路面设计和材料规格方面实现重大飞跃。

Characterisation of granular base and sub-base pavement materials under cyclic loading. Pavement construction is a high cost item in road construction. Until very recently, pavements were designed based on empirical rules and restrictive material prescriptions. With the introduction of rational mechanistic pavement design methodology, it has become necessary to reliably characterise the behaviour of road foundation materials under cyclic loading. This project is focused on the characterisation of unbound granular base and sub-base materials. Since these are geo-materials, geotechnical concepts such as the influence of stress path will be used. This project will lead to better roads at lower cost, and significant leap in know-how in pavement design and material specification.