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Título
Experimental study on the properties of ultra-high-strength geopolymer concrete with polypropylene fibers and nano-silica
Autor
Facultad/Centro
Área de conocimiento
Título de la revista
PLOS ONE
Número de la revista
4
Datos de la obra
Althoey F, Zaid O, Alsulamy S, Martı´nez- Garcı´a R, de Prado-Gil J, Arbili MM (2023) Experimental study on the properties of ultra-high- strength geopolymer concrete with polypropylene fibers and nano-silica. PLoS ONE 18(4): e0282435.
Editor
Public Library of Science
Fecha
2023
Abstract
[EN] Because of the recent progress in materials properties, specifically high-strength concrete,
further research is needed to evaluate its suitability, understanding, and performance in the
modern-day world. This research aims to enhance the performance of ultra-high-strength
geopolymer concrete (UHS-GPC) by adding nano-silica (NS) and polypropylene fibers
(PPFs). Three 1%, 2%, and 3% different amounts of PPFs and three NS 5%, 10%, and 15%
were utilized in the samples. Various performance parameters of UHS-GPC were evalu-
ated, such as fresh property, compressive strength, modulus of elasticity split tensile, flex-
ural and bonding strength, drying shrinkage, load-displacement test, fracture performance,
and elevated temperature. The test outcomes showed that by raising the percentage of
PPFs and NS to the allowable limit, the performance of UHS-GPC can be improved signifi-
cantly. The most improved performance of UHS-GPC was obtained at 2% polypropylene
fibers and 10% nano-silica, as the compressive, splitting tensile, flexural. Bond strength was
improved by 17.07%, 47.1%, 36.52, and 37.58%, and the modulus of elasticity increased by
31.4% at 56 days. The study showed that the sample with 2% PPFs and 10% NS had excel-
lent performance in the load-displacement test, drying shrinkage, fracture behavior, and ele-
vated temperature. At 750˚C elevated temperature, the samples’ strength was reduced
drastically, but at 250˚C, the modified samples showed good resistance to heat by retaining
their compressive strength to some degree. The present work showed the suitability of
PPFs and NS to develop ultra-high-strength geopolymer concrete, which can be used as a
possible alternate material for Portland cement-based concrete.
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