Flow and mechanical properties of 3D printed cementitious material with recycled glass aggregates

Environmental sustainability has been the focus of recent construction trends. Adopting efficient construction technologies and minimizing the usage of raw materials are a few of many ways to achieve such sustainability. In the past few years, 3D printing of concrete has received considerable attention for its potential to be the next disruptive technology for construction industry. By eliminating and/or reducing the amount of in-situ construction, combined with the need for skilled personnel, 3D printing can help in achieving good quality control at construction site, which has long been an issue in traditional construction industry. Singapore is dependent on neighboring countries for raw construction materials. Using recycled materials as a substitute for aggregates not only minimizes the usage of raw materials, but also help in reducing the Singapore’s dependency on other countries in long-term. In this study, preliminary findings of a 3D printed cementitious material with recycled glass aggregates (RGA) were presented. For 3D printing two different binder systems were used – ternary blended Portland cement and flyash based geopolymer.Published versio