Characterization of different sugarcane bagasse ashes generated for preparation and application as green products in civil construction

The characterization and manipulation of solid residues according to their types can enable different ways of efficient and specialized applications in the development of products. In particular, the sugarcane bagasse ash, a solid agro-industrial residue resulting from the burning of the bagasse in boilers for energy cogeneration, attracts attention due to its high availability. This study aims to systematically characterize the bottom, fly and mixed ashes, submitted to low-cost processings, in order to do a better directioning of their applicabilities in civil construction products. The processings of the ashes consist basically in stages of sieving and reburning at 600 °C. The results showed that the chemical and physical properties of the bottom and mixed ashes are similar between them and are especially recommended for applications in replacement of fine aggregates in civil construction products. The fly ash sample, without reburning and with amorphous structural organization, satisfies prerequisites for evaluations of pozzolanic applications in partial replacement of cementitious materials.