7. Potential Use of Sugarcane Bagasse Ash in Cementitious Mortars for 3D Printing

The building and construction sector is undergoing a transformation with the integration of advanced technologies such as building information modelling (BIM) and 3D printing. These innovations aim to enhance productivity, reduce waste, and improve sustainability. One of the key materials used in 3D printing mortars is concrete, which provides essential properties like compressive strength and durability. However, the high cement content in these mixtures contributes to significant carbon emissions. To address this, supplementary cementitious materials (SCMs) like fly ash and silica fume are being explored. This chapter focuses on the potential use of sugarcane bagasse ash (SCBA) as an SCM in cementitious mortars for 3D printing. SCBA is a residue obtained from the incineration of sugarcane bagasse and has shown promising results in improving the early strength and durability of concrete. The chapter provides a detailed review of the existing literature on SCBA and presents original experimental data on the mechanical properties of 3D printing mortars containing SCBA. The study investigates the influence of SCBA on the workability and buildability of the mortars, as well as their compressive and flexural strength at different curing ages. The findings highlight the potential of SCBA as a sustainable alternative in the production of 3D printing mortars, contributing to a more environmentally friendly construction industry.