Thermal performance of geothermal pavements constructed with demolition wastes

Abstract

This paper investigates the potential of harvesting heat energy from geothermal pavements constructed with construction and demolition (C&D) waste materials, by using experimental and numerical methods. The deformation, stiffness, and shear strength properties of two types of C&D materials used for the construction of geothermal pavements, namely crushed brick (CB) and recycled concrete aggregate (RCA), were evaluated by performing repeated load triaxial (RLT) and quick shear tests. A multistage RLT test was adopted to investigate the deformation behavior of CB and RCA over a wide range of stress levels. The stiffness of materials was evaluated in different stress combinations. A small-scale..