Influence of different methods of treating natural açai fibre for mortar in rural construction
Laen...
Kuupäev
2021
Kättesaadav alates
Autorid
Rocha, D.L.
Azevedo, A.R.G.
Marvila, M.T.
Cecchin, D.
Alexandre, J.
Carmo, D.F.
Ferraz, P.F.P.
Conti, L.
Rossi, G.
Ajakirja pealkiri
Ajakirja ISSN
Köite pealkiri
Kirjastaja
Abstrakt
Açai is a typical Amazonian fruit that has enormous potential for use in medicines and
foods, whose consumption has been growing year after year. One of the major environmental
impacts related to Açai is the generation of agro-industrial wastes, which are disposed of in
landfills. One of the major problems related to the reuse of natural fibres in cementitious materials
is related to their durability due to the alkalinity of the matrix. Thus, the objective of this work
was to evaluate three different methodologies for surface treatment of Açai fibre, by immersion
in NaOH, KOH and Ca(OH)2 solution to mortar application in rural construction. After the
treatments, the fibres were added in a proportion of 2.5 and 5.0% in relation to the cement mass,
in addition to the reference mortar (without fibre) in the making of the prismatic specimens
(40×40×160 mm) and cured for 28 days in room temperature. Right after the curing period, the
specimens were evaluated according to the mechanical strength of flexion and compression,
workability, water absorption by capillarity and mass density in the hardened state of each
methodology. The results showed that the best treatment methodology is with NaOH solution,
with the addition of 5% Açai fibre in relation to the cement mass, producing a suitable mortar for
use in rural buildings.
Kirjeldus
Received: January 20th, 2021 ; Accepted: April 15th, 2021 ; Published: May 4th, 2021 ; Correspondence: daianececchin@yahoo.com.br
Märksõnad
agro-industrial wastes, açai, reuse, rural constructions, sustainability, articles