Split tensile strength of slag-based boroaluminosilicate geopolymer

Khezrloo, Amirreza; Aghaie, Ermia; Tayebi, Morteza

doi:10.1007/s41779-017-0127-6

Cited by 14 publications

(4 citation statements)

References 19 publications

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“…Khezrloo et al 68 revealed that the curing time was one of the most influential parameters, and had a considerable impact on STS of slag‐based boroaluminosilicate geopolymers. Therefore, to investigate this parameter, the STS test was performed on TM3 and TM5 at 7 and 14 days of curing from the day of preparation and obtained results are illustrated in Figure 8.…”

Section: Resultsmentioning

confidence: 99%

Splitting tensile strength of recycled tire steel fiber‐reinforced alkali‐activated slag concrete designed by Taguchi method

Eskandarinia

Esmailzade

Aslani

2022

Structural Concrete

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Despite offering several benefits in terms of environment and economics, few studies were conducted on the ground granulated blast furnace slag (GGBFS) based alkali-activated concrete reinforced with recycled tire steel fibers (RTSFs). Therefore, this paper employed the Taguchi method to investigate and optimize the influence of GGBFS content, the alkaline solution to GGBFS content ratio, sodium hydroxide solution concentration, and RTSF volume fraction on splitting tensile strength (STS) of recycled tire steel fiberreinforced alkali-activated slag concrete (RTSFR-AASC). The microstructural evaluation was done through scanning electron microscopy, and Fourier transform infrared spectroscopy (FTIR) analyses. The results indicated that the fiber content, the most efficient parameter on STS, led to a considerable enhancement in the performance characteristic. Microstructural analysis proved the variations in formation of C-S-H gel. The results of the confirmation experiment on the proposed optimized RTSFR-AASC mixture with the highest 28-day STS (7.11 MPa) confirmed the effectiveness of the Taguchi method. K E Y W O R D Sfiber-reinforced alkali-activated concrete, ground granulated blast furnace slag, microstructural analysis, recycled tire steel fiber, splitting tensile strength, Taguchi method

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Section: Resultsmentioning

confidence: 99%

Splitting tensile strength of recycled tire steel fiber‐reinforced alkali‐activated slag concrete designed by Taguchi method

Eskandarinia

Esmailzade

Aslani

2022

Structural Concrete

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“…2 Currently, most of the researchers are concentrating on solid waste management, 3 such as reusing the sludge ash as filler in plastics and polymers, 4 electronic waste circuit board recycling, 5 production of mortars from waste foundry sand 6 and recycling of high temperature sintered ceramics. 7 Similar to that, there is a waste generated from the abrasive product manufacturing and abrasive product consumption. Authors in previous research work have attempted to recover abrasive grains from vitrified aluminium oxide grinding wheel waste.…”

Section: Introductionmentioning

confidence: 90%

Process optimization and removal of phenol formaldehyde resin coating using mechanical erosion process

Palaniyappan¹,

Veiravan²,

Kumar³

et al. 2022

Progress in Rubber, Plastics and Recycling Technology

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Consumption of coated abrasive discs in various automobile and pipe fitting application is increasing, due to its good surface finish. Coated abrasive disc consists of single layer of abrasive grain bonded to a fibre backing. The major portion of the disc is comprised of fibre backing. But the sustainability of the fibre backing is low and is dumped as waste after usage. The present work deals with the removal of resin coating and recovery of fibre backing from the spent coated abrasive discs using physical separation process such as sand blasting technique. Initially, the recovery experiment was carried out based on L16 orthogonal array. The factors and levels chosen for the experiments were erodent pressure (0.2, 0.4, 0.6 and 0.8 MPa), erodent size (36, 60, 80 and 120 grit), disc orientation (30, 45, 60 and 75°) and number of times flexing (5, 10, 15 and 20). The experimental result shows that erodent size and erodent pressure have a major impact on recovery of the fibre backing. The surface structure of the recovered backing was analysed using scanning electron microscopy and optical microscopy. The recovered backing was very much useful for the coated abrasive industry as the flexible backing and support material for abrasive grain coating.

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“…It is present in nature in many kinds of minerals, and its main salts (borates) are not considered toxic substances [ 21 ]. There have been some studies regarding geopolymers with the addition of various boron compounds, such as borax, anhydrous borax, boric acid, amorphous and crystalline lithium tetraborate, and colemanite [ 22 , 23 , 24 , 25 , 26 , 27 , 28 , 29 , 30 ]. Boron may also be introduced to a geopolymer matrix when the raw aluminosilicate material contains this element.…”

Section: Introductionmentioning

confidence: 99%

Immobilization of Heavy Metals in Boroaluminosilicate Geopolymers

et al. 2021

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Boroaluminosilicate geopolymers were used for the immobilization of heavy metals. Then, their mechanical properties, phase composition, structure, and microstructure were investigated. The addition of borax and boric acid did not induce the formation of any crystalline phases. Boron was incorporated into the geopolymeric network and caused the formation of N–B–A–S–H (hydrated sodium boroaluminosilicate) gel. In the range of a B/Al molar ratio of 0.015–0.075, the compressive strength slightly increased (from 16.1 to 18.7 MPa), while at a ratio of 0.150, the compressive strength decreased (to 12 MPa). Heavy metals (lead and nickel) were added as nitrate salts. The loss of the strength of the geopolymers induced by heavy metals was limited by the presence of boron. However, it caused an increase in heavy metal leaching. Despite this, heavy metals were almost entirely immobilized (with immobilization rates of >99.8% in the case of lead and >99.99% in the case of nickel). The lower immobilization rate of lead was due to the formation of macroscopic crystalline inclusions of PbO·xH2O, which was vulnerable to leaching.

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Split tensile strength of slag-based boroaluminosilicate geopolymer

Cited by 14 publications

References 19 publications

Splitting tensile strength of recycled tire steel fiber‐reinforced alkali‐activated slag concrete designed by Taguchi method

Splitting tensile strength of recycled tire steel fiber‐reinforced alkali‐activated slag concrete designed by Taguchi method

Process optimization and removal of phenol formaldehyde resin coating using mechanical erosion process

Immobilization of Heavy Metals in Boroaluminosilicate Geopolymers

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