The sustainable construction approach by utilizing recycled aggregates has increasingly been the focus of highway construction industries and local road authorities in recent years. The efficient usage of recycled aggregates for sustainable construction is owed to more than a decade of extensive experimental research aiming to remove uncertainties in the properties and performance of recycled aggregates in transport infrastructures. Nevertheless, a lack of knowledge exists about the stress-strain response of the pavement structures constructed using recycled aggregates. The main goal of this study was to propose a response analysis approach to incorporate the repeated load triaxial (RLT) test results as a Level 1 MEPDG input parameter in a well-established pavement analysis software named FlexPAVE^TM. In this approach, the aggregate base course was divided into ten sublayers of equal thickness. Three different constitutive resilient modulus (Mr) models were utilized to determine the Mr of each sublayer corresponding to the stress levels achieved at that sublayer. Modeling the pavements in FlexPAVE^TM by assigning the corresponding Mr to the sublayers resulted in a more accurate stress-strain response compared to the conventional linear elastic analysis approach. This approach provides a more realistic and, accordingly, more accurate analysis of the behavior of unbound aggregates in pavements. The secondary goal of this study was to investigate the stress-strain response of pavements with aggregate base courses made of three types of recycled construction and demolition wastes, being recycled concrete aggregate (RCA), crushed brick (CB), and waste excavation rock (WR). The resilient properties of the demolition wastes were determined through repeated load triaxial (RLT) testing. A typical pavement profile consisting of asphalt surface course, aggregate base course, and an A6 type of natural soil as subgrade was modeled using FlexPAVE^TM. The response analysis was undertaken following the proposed sub layered approach. Under the loading conditions adopted in this research, with bulk stresses <185 kPa, CB and RCA exhibited a superior Mr response compared to the conventional virgin materials, while WR showed an inferior behavior.

近年来，利用再生骨料的可持续建筑方法越来越成为高速公路建设行业和地方道路管理部门的关注焦点。可再生骨料在可持续建筑中的有效利用归功于十多年来旨在消除交通基础设施中再生骨料特性和性能的不确定性的广泛实验研究。然而，对于使用再生骨料建造的路面结构的应力应变响应还缺乏了解。本研究的主要目标是提出一种响应分析方法，将重复载荷三轴 (RLT) 测试结果作为 1 级 MEPDG 输入参数纳入名为 FlexPAVE ^{TM 的}完善路面分析软件中. 在这种方法中，骨料基层被分成十个等厚的子层。使用三种不同的本构弹性模量 (Mr) 模型来确定每个子层的 Mr，对应于该子层达到的应力水平。在 FlexPAVE ^{TM 中}模拟人行道与传统的线弹性分析方法相比，通过将相应的 Mr 分配给子层，可以得到更准确的应力应变响应。这种方法提供了对路面中未结合骨料的行为的更现实且因此更准确的分析。本研究的次要目标是研究由三种类型的回收建筑和拆除废物制成的骨料基层的路面的应力应变响应，即再生混凝土骨料 (RCA)、碎砖 (CB) 和废弃开挖岩石。 WR）。拆除废物的弹性特性是通过重复载荷三轴 (RLT) 测试确定的。使用 FlexPAVE 对由沥青面层、骨料基层和 A6 型天然土壤作为路基组成的典型路面剖面进行建模^TM。响应分析是按照建议的子分层方法进行的。在本研究采用的加载条件下，体积应力 <185 kPa，与传统的原始材料相比，CB 和 RCA 表现出更好的 Mr 响应，而 WR 表现出较差的行为。