Effects of alkaline solution to binder ratio on fracture parameters of steel fiber reinforced heavyweight geopolymer concrete

Mousavinejad, Seyed Hosein Ghasemzadeh; Gashti, Mohsen Falahatkar

doi:10.1016/j.tafmec.2021.102967

Cited by 21 publications

(2 citation statements)

References 45 publications

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“…When the solution-binder ratio was increased from 0.45 to 0.5, the alkaline solution in GP mixes increased, which provides the medium of transfer of different ion and particles like silicon and sodium particles for geopolymerisation process (Hu et al, 2018). But, CS of GPC The CS of GPC rose by 4 to 6 MPa by approximately 4 to 6 MPa, when solution-binder ratio increases from 0.45 to 0.5 (Mousavinejad et al, 2021).…”

Section: Effect Of Solution To Binder Ratiomentioning

confidence: 97%

Assessment of Strength and Microstructural Properties of GGBS based Sustainable Geopolymer Concrete with parametric variations in alkaline solutions

Prusty,

Murmu,

Panigrahi

et al. 2023

Preprint

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Geopolymer binders such as ground granulated blast furnace slag (GGBS) and fly ash (FA) have been promisingly surfaced as probable alternatives to ordinary portland cement (OPC) in concrete preparation over the last few decades. The production of geopolymer concrete (GPC) generates approximately 30–50% less carbon-dioxide (CO2) gas emissions than OPC concrete. GPC not only reduces CO2 emissions, but it also uses industrial solid wastes. To achieve optimum mechanical strength, three parameters which play crucial roles have been considered: Molarity of sodium hydroxide (NH) concentration, solution to binder ratio (S/B) and sodium silicate-sodium hydroxide (NS/NH) proportion. So, in present paper, the mechanical and microstructural characteristics of GPC cured at ambient curing condition using several mixes prepared with varying NaOH concentrations (10M – 16M), solution to binder ratios (Total alkali activator/Total binder content) (0.45 – 0.55) and sodium silicate (NS) to (NH) ratios (1.5 – 2.5) has been investigated. In addition to this, for a conceptualization of environmental impact of GPC, life-cycle assessment (LCA) has been performed.

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Section: Effect Of Solution To Binder Ratiomentioning

confidence: 97%

Assessment of Strength and Microstructural Properties of GGBS based Sustainable Geopolymer Concrete with parametric variations in alkaline solutions

Prusty,

Murmu,

Panigrahi

et al. 2023

Preprint

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“…Zang et al (Zhang et al, 2021) declared that the initial and the unstable fracture toughness of the plain geopolymer concrete is enhanced by 27.8% and 12.74-fold, respectively, thanks to steel fiber usage at 2.5 vol%. Implementing the work of fracture and the size effect method, Mousavinejad and Gashti (Mousavinejad & Gashti, 2021) revealed the correlation between steel fibers and the fracture characteristics of the heavyweight geopolymer concretes. Liu et al (Liu et al, 2020) stated that although the increase in the steel fiber content up to 2 vol% significantly amends both fracture properties of the geopolymer concrete, further rise in the fiber content has a limited effect on the increment in the fracture energy.…”

Section: Introductionmentioning

confidence: 99%

Mixed Mode Fracture of the Geopolymer Composites Reinforced With Recycled Steel Fibers

GÜMÜŞ,

BAYRAK

2024

Kahramanmaraş Sütçü İmam Üniversitesi Mühendislik Bilimleri Dergisi

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For the fiber-reinforced composites, strength-based criteria alone may fail to evaluate the bending response due to the long tail of the load-displacement curve. Hence, the fracture characterization of fibered composites has gained great attention worldwide. In this study, the mixed-mode fracture performance of the recycled steel fiber-reinforced geopolymer concrete was examined experimentally. The main test parameters were the amount of steel fibers (0 and 2% by mass) and the offset ratios of the edge notch (β = 0, 0.2, and 0.4). Several notched prisms were produced and tested under a deformation-controlled three-point bending test. Deformation maps on the surface of the specimens were derived through the digital image correlation method. Experimental results were discussed concerning the first cracking load, ultimate load, critical crack mouth opening displacement, critical crack mouth sliding displacement, and fracture energy. Based on the experimental findings, it can be stated that the peak flexural loads were increased by 666%, 1327%, and 400%, respectively for the 0, 0.2, and 0.4 notch offset ratios due to the use of recycled steel fiber. The fracture energies of the plain specimens were proportional to the notch offset ratio, but they fluctuated for the fiber-reinforced specimens because of the uneven distribution of fibers.

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Mechanical Behavior of Geopolymer Matrix Composites with the Addition of Steel Fibers

Linhares

Malafaia

Azevedo

et al. 2023

The Minerals, Metals &Amp; Materials Series

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Effects of alkaline solution to binder ratio on fracture parameters of steel fiber reinforced heavyweight geopolymer concrete

Cited by 21 publications

References 45 publications

Assessment of Strength and Microstructural Properties of GGBS based Sustainable Geopolymer Concrete with parametric variations in alkaline solutions

Assessment of Strength and Microstructural Properties of GGBS based Sustainable Geopolymer Concrete with parametric variations in alkaline solutions

Mixed Mode Fracture of the Geopolymer Composites Reinforced With Recycled Steel Fibers

Mechanical Behavior of Geopolymer Matrix Composites with the Addition of Steel Fibers

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