High thermal conductivity concrete for energy piles

Research is increasingly focusing on thermal properties of concrete with the aim reducing heat exchange between buildings and environment. On other hand, concretes high conductivity could have interesting applications in field thermo-active ground structures as Geothermal Energy Piles (GEPs). This kind foundations represent an environmentally friendly technology that allows exploiting shallow earth surface to supply renewable energy for air conditioning buildings. GEPs are needed structural geotechnical reasons allow recovering installation costs connected vertical boreholes. Concrete drilled or driven piles equipped a Primary Circuit (PC) high-density polyethylene plastic pipes attached reinforcement cages. Thermal extracted from injected into thought carrier fluid flows PC. To improve pile soil should be considered design parameters. conductivity, contrary what happens buildings, increased optimise performance GEPs. Different solutions modify mix proposed increasing