Long term durability properties of field concretes with glass sand and glass powder

Abstract

Efforts have been made to use the waste glass in concrete industry, either as the partial sand replacement, or as partial cementitious materials replacement. Two previous papers, regarding the intensive laboratory and field trials data, were presented in Ancona in 2010 and in Kyoto in 2013. Since glass itself is unstable in the alkaline environment of concrete, as a result, it is of great interest to assess the concrete durability properties and its performance after five years of trafficking. The durability properties have been tested in terms of alkaline silica reaction, if any, and interface zone with aggregate, water absorption, water sorptivity, water permeability, void contents, and chloride migration test. The performance assessment includes the compressive strength, the density and the wear resistance. This paper presents the feasibility and limitations when glass sand or glass powder is partially used in concrete mixes.