Resumo

GONCALVES, C. F.; SOARES, A. F.  e  PAULA, H. M.. Characterization and feasibility of using vegetable biomass ash in mortar. Rev. ALCONPAT [online]. 2021, vol.11, n.2, pp.1-16.  Epub 12-Set-2022. ISSN 2007-6835.  https://doi.org/10.21041/ra.v11i2.484.

The present research aims to evaluate the incorporation of vegetable biomass ash, eucalyptus chips (ECA), sugarcane bagasse ash (SCBA) and rice husk ash (RHA), in mixed mortars of cement and lime, considering its properties and mechanical performance. The volume ratio was 1: 1: 6 for a partial replacement of Portland cement at a rate of 15 and 30%. The tests for the residues were a characterization of the particles and pozzolanic activity, while that of the mortars was an analyses in the fresh and hardened state. From the results, pretreatments (sieving and grinding) and lime added to the mixture improved the reactivity of the ashes and the best performance was presented for mortars with 15% substitution, mainly for those containing RHA.

Palavras-chave : mortars; partial replacement of cement; supplementary cement materials; vegetable biomass ash.

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