Influence of sugarcane bagasse ash on mechanical properties of concrete

Liliane Rodrigues Congro da Rocha, Marina Martins Mennucci, Patricia Hatsue Suegama

Abstract


Sugarcane bagasse ashes (SCBA) have been used as a sustainable material to replace cement in the production of concrete and mortars. This work evaluated through mechanical resistance, and water absorption tests the possibility of using SCBA (dry and sieved) in the production of reinforced concrete, partially replacing cement at 0, 10, 20 % for comparative purposes, and analyzed the mechanical resistance tests in cementitious specimens and concrete specimens. The chemical characterization of the ashes was carried out after drying and sieving the ashes, and it was verified that these ashes are rich in silica. Despite the increase in water absorption in the concrete specimens, the compressive strength obtained an increase of 30 % with the replacement of 10 % cement by CBC and replacing 20 % cement by CBC, the compressive strength obtained the same value of the sample without CBC, besides that after comparison with tests on the cementitious paste specimens, it can be concluded that the CBC act in the concrete more as a filler than as a pozzolanic material.

Keywords


Sugarcane bagasse ashes (SCBA); Concrete; Mechanical resistance; Sustainability; Filler

References


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DOI: https://doi.org/10.18256/2358-6508.2021.v8i2.4316

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