On the rheology of using geopolymer for grouting: A comparative study with cement-based grout included fly ash and cold bonded fly ash

Güllü, Hamza; Çevik, Abdülkadir; Al-Ezzi, Kifayah M.A.; Gülşan, Mehmet Eren

doi:10.1016/j.conbuildmat.2018.11.140

Cited by 145 publications

(28 citation statements)

References 74 publications

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“…It can be said that increasing FA is able to improve the flowability of CBG. Similar results were reported by Güllü, H. et al [35] and Sha. F. et al [33].…”

Section: Figure 7 Marsh Cone Flow Test Apparatussupporting

confidence: 91%

Effect of Waste Marble Powder and Fly Ash on the Rheological Characteristics of Cement Based Grout

2019

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This paper shows the results of an experimental study conducted to research the impact of waste marble powder (WMP) and fly ash (FA) on the fluidity (marsh cone flow time (MCFT), mini-slump diameter and plate cohesion meter (PCM)) and the rheological properties (viscosity and yield stress) of cement based grout (CBG) mixtures. The experiments were applied with the CBG mix including 1.00 water-binder (w/b) ratios and combined use of WMP (5-25%), FA (5-25%) and WMP+FA (10-30% + constant 25%). Test results illustrated that the rheological properties of the CBGs importantly have been improved by the addition of WMP, FA and WMP+FA to grout mix at w/b=1 ratio. Strongly shear thickening behaviour was got from the CBG mixtures the all WMP, FA and WMP+FA content. The increase in the percentage of WMP (5-25%) amount reduced the mini-slump flow diameter. Moreover, the increment in the percentage of FA (5-25%) amount increments the mini slum flow. According to the control sample, the increment in the percentage of WMP (10-25%) amount increased the mini-slump flow diameter for constant FA (25%) content. Also, the increase in WMP amount in the CBG mix, there is no effect on MCFT. Also, MCFT decreased with the increase of FA amount. Especially, FA increased the fluidity of CBG, when the WMP showed negative effect in increase the MCFT in WMP+FA content.

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“…It can be said that increasing FA is able to improve the flowability of CBG. Similar results were reported by Güllü, H. et al [35] and Sha. F. et al [33].…”

Section: Figure 7 Marsh Cone Flow Test Apparatussupporting

confidence: 91%

Effect of Waste Marble Powder and Fly Ash on the Rheological Characteristics of Cement Based Grout

2019

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“…Reuse of secondary raw materials in production of alkali-activated aluminosilicate materials could not only expand the raw material base of the construction industry without increasing the use of natural mineral resources, but also reduce the effect of greenhouse gases associated with ordinary Portland cement and concrete production. Production of geopolymers requires significantly less energy than the production of Portland cement [3][4][5][6]. In addition, Portland cement-based concrete is subject to certain durability problems, including aggregate-alkali reactions, chloride-induced corrosion in reinforcing steel, retarded ettringite and thaumasite formation [7], which are not characteristic for geopolymers.…”

Section: Introductionmentioning

confidence: 99%

The Impact of the Amount of Water Used in Activation Solution and the Initial Temperature of Paste on the Rheological Behaviour and Structural Evolution of Metakaolin-Based Geopolymer Pastes

et al. 2020

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This study aimed to determine the impact of the initial temperature of the paste (from 5 °C to 35 °C) and the addition of water, which reflects a decrease in the molarity of activation solutions (AS) by diluting 10 M NaOH with distillate water, on the rheological properties of geopolymer pastes. Additionally, this resulted in changes to the physical–mechanical properties of geopolymers after curing. A higher amount of water in the AS composition and higher initial paste temperature led to an increase in the spread values up to 28% and decreases viscosity. A smaller amount of water in the AS composition and a higher initial paste temperature accelerated the speed of the geopolymer structure formation up to 1.5 times during the curing period, increased compressive strength and reduced apparent porosity and pore size. X-ray diffraction confirmed the compressive strength test results and revealed that the lower amount of water in the AS and the higher initial paste temperature for the geopolymer preparation significantly affected the mineral formation and physical and mechanical properties of the samples.

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“…The major cause of the superior performance of the alkali-activated slag/fly ash grout was the formation of a silica-rich gel [ 10 ]. Gullu et al studied the rheology of a geopolymer grout based on fly ash and silica fume [ 11 ]. They concluded that up to 30% of fly ash and 40% of silica fume can be used to develop a geopolymer grout with suitable flow and rheological properties [ 11 ].…”

Section: Introductionmentioning

confidence: 99%

Characteristics of Preplaced Aggregate Concrete Fabricated with Alkali-Activated Slag/Fly Ash Cements

et al. 2021

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This study assesses the characteristics of preplaced aggregate concrete prepared with alkali-activated cement grout as an adhesive binder. Various binary blends of slag and fly ash without fine aggregate as a filler material were considered along with different solution-to-solid ratios. The properties of fresh and hardened grout along with the properties of hardened preplaced concrete were investigated, as were the compressive strength, ultrasonic pulse velocity, density, water absorption and total voids of the preplaced concrete. The results indicated that alkali-activated cement grout has better flowability characteristics and compressive strength than conventional cement grout. As a result, the mechanical performance of the preplaced aggregate concrete was significantly improved. The results pertaining to the water absorption and porosity revealed that the alkali-activated preplaced aggregate concrete is more resistant to water permeation. The filling capacity based on the ultrasonic pulse velocity value is discussed to comment on the wrapping ability of alkali-activated cement grout.

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On the rheology of using geopolymer for grouting: A comparative study with cement-based grout included fly ash and cold bonded fly ash

Cited by 145 publications

References 74 publications

Effect of Waste Marble Powder and Fly Ash on the Rheological Characteristics of Cement Based Grout

Effect of Waste Marble Powder and Fly Ash on the Rheological Characteristics of Cement Based Grout

The Impact of the Amount of Water Used in Activation Solution and the Initial Temperature of Paste on the Rheological Behaviour and Structural Evolution of Metakaolin-Based Geopolymer Pastes

Characteristics of Preplaced Aggregate Concrete Fabricated with Alkali-Activated Slag/Fly Ash Cements

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