Recycling of EPS: A new methodology for production of concrete impregnated with polystyrene (CIP)

A reduction in porosity, with a consequent reduction in permeability, could be an option for increasing the durability of concrete and preserving its surface characteristics. This research was conducted to identify a new material to be economical, efficient and easily applied, as part of Concrete Impregnated with Polystyrene (CIP), so as to reduce the permeability of pre-cast concrete surfaces, thereby, reducing the rate of degradation and increasing overall durability. Additional aims are: (a) using materials which do not affect the visual aspect of the concrete, so that the system can be used on monuments and other elements that are exposed to inclement weather; and (b) developing a new technology that makes use of recycled polymers. The results are promising and show a significant reduction in water permeability, reduction in porosity and, consequently, a reduction in the proliferation of fungus on the surface of the concrete treated with expanded polystyrene (EPS).