CARACTERIZAÇÃO DO RESÍDUO AGRÍCOLA DA CASTANHA-DO-BRASIL (Bertholletia excelsa H.B.K)

Ribeiro, Franciene Dias; Saraiva-Bonatto, Eyde Critianne; Moura, Rodolfo Pessoa de Melo; Moura, Marco Antônio Sabóia; Saraiva, Maria das Graças Gomes

doi:10.36882/2525-4812.2020v6i15p61-73

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“…The processing of Amazon chestnuts to extract the fruit generates two categories of waste, namely: the rst comes from the breaking of the urchin and the epicarp to obtain the fruit pulp and has intrinsic characteristics due to low humidity and high ber content and the second, occurs from the processing of the pulp to extract the oil, resulting in a homogeneous cake with high-fat content, higher moisture content, and a sandy appearance [21].…”

Section: Introductionmentioning

confidence: 99%

The mortar performance research with the addition of silica fume, glass powder, Amazon chestnut, and biopolymer additive

COSTA,

BARBOSA,

SÁ

et al. 2024

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Waste reuse in buildings has proven to be an interesting alternative and more and more research is making it possible to it from many industrial sectors as raw material for making products, reducing the disposal and exploitation of natural resources. Associated with the above, the lime-based mortars in the restoration of historic buildings are since the material provides “breathability” to the substrate, facilitating the exchange of vapors due to its porosity, preventing condensation inside the masonry in addition to the low thermal conductivity, also the ability to accommodate the movements that the building may undergo over time. In this context, the objective of this work is to evaluate the physical, mechanical, chemical properties, and durability of mortars made with binder: sand: biopolymer, in the proportion 1: 3: 0.06 (by weight) where waste was added: silica fume and/or glass powder and/or crushed Amazon chestnuts. To this end, Portland cement or hydrated lime was used as a binder to provide a more in-depth analysis, also allowing the influence of this to be assessed. Mechanical tests (compressive strength and diametral compression strength), durability (immersion absorption, capillarity absorption), and ultrasonic pulse were carried out at 28 days of age. Finally, the benefits of inserting waste in the performance of the mortar were verified, mainly from Amazon chestnuts, which provided significant gains in tensile strength.

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Section: Introductionmentioning

confidence: 99%