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

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Abstract

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.

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Notes

  1. Pozzolanic effect is the ability that some materials of siliceous or silico-aluminous composition have to form compounds with cementitious properties of agglutination, when they are finely milled and in the presence of water and calcium hydroxide at room temperature (NBR 12653 2014).

Abbreviations

SCBA:

Sugarcane bagasse ash

SCBAb:

Bottom ash

SCBAcb:

Calcined and bottom ash

SCBAcf:

Calcined and fly ash

SCBAcm:

Calcined and mixed ash

SCBAf:

Fly ash

SCBAm:

Mixed ash

SCBApb:

Primary and bottom ash

SCBApf:

Primary and fly ash

SCBApm:

Primary and mixed ash

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Acknowledgements

The authors would like to thank CAPES for the incentive given to the researchers as well as to the laboratory of civil construction materials – DECUEM. In addition, we would like to thank BASF S/A, Brazil, for sponsoring our additive and Usaçúcar Group for all the support and SCBA donation.

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Correspondence to Rafael Germano Dal Molin Filho.

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Molin Filho, R.G.D., Colpini, L.M.S., Ferrer, M.M. et al. Characterization of different sugarcane bagasse ashes generated for preparation and application as green products in civil construction. Clean Techn Environ Policy 21, 1687–1698 (2019). https://doi.org/10.1007/s10098-019-01740-x

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  • DOI: https://doi.org/10.1007/s10098-019-01740-x

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