Compressivestrength study of geopolymer mortar using quarry rock dust

Madhav, T. Venu; Reddy, I. Neelakanta; Ghorpade, Vaishali G.; Jyothirmai, S

doi:10.1016/j.matlet.2018.07.133

Cited by 25 publications

(11 citation statements)

References 2 publications

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“…Various papers have included blast furnace slag as a precursor for producing geopolymers containing quarry waste [29,33,34,36,37,43,[53][54][55][56][57][58][59]. The potential of using geopolymers consisting of copper mine tailings and slag for pavement construction was investigated [33].…”

Section: Ground Granulated Blast Furnace Slagmentioning

confidence: 99%

Quarry Waste as Precursors in Geopolymers for Civil Engineering Applications: A Decade in Review

Solouki

Viscomi²,

Lamperti³

et al. 2020

Materials

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Carbon footprint reduction of paving materials could be explored through recycling mining by-products into different applications, which will preserve natural resources and decrease environmental issues. One possible approach is to reuse quarry dust and mining ore waste as precursors in geopolymer applications. geopolymers are mineral polymers rich in aluminosilicates with an amorphous to a semi-crystalline three-dimensional structure. The current review aims to summarize the studies conducted during the past decade on geopolymers containing quarry dust and mine tailings. The first section discusses various precursors used for geopolymer cement production such as metakaolin, ground granulated blast furnace slag (GGBFS), fly ash, and quarry/mining ore wastes including silt, tungsten, vanadium, copper, gold, zinc, marble, iron, basalt, and lithium. Different calcination treatments and curing conditions have been summarized. In some cases, the precursors are required to be calcined to increase their reactivity. Both ambient temperature and elevated temperature curing conditions have been summarized. Less attention has been paid to room temperature curing, which is necessary for field and industrial implementations. Engineering properties such as compressive strength, density, durability and acid resistance, water absorption and abrasion of geopolymers containing mining waste were reviewed. One of the main barriers preventing the widespread use of waste powders, in addition to economic aspects, in geopolymers could be due to their unstable chemical structure. This was shown through extensive leachate of Na+ or K+ cations in geopolymer structures. The review of over 100 articles indicated the need for further research on different aspects of quarry waste geopolymer productions before its full industrial implementation.

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Section: Ground Granulated Blast Furnace Slagmentioning

confidence: 99%

Quarry Waste as Precursors in Geopolymers for Civil Engineering Applications: A Decade in Review

Solouki

Viscomi²,

Lamperti³

et al. 2020

Materials

View full text Add to dashboard Cite

show abstract

“…The advantages of geopolymer binders for replacing traditional Portland cement in particular are supported by the fact that in various industries there are many by-products that are suitable for use as raw materials for geopolymers [17][18][19]. In recent years, there has been an increasing number of studies on the use of mining waste in the preparation of geopolymer materials both as a component of an alkali-activated binder and as an aggregate [20][21][22][23][24][25][26][27][28][29][30][31][32][33][34]. Geopolymer materials display special physical-mechanical and technical properties: high durability and strength, particularly bending strength; resistance to chemical aggressive environments, and high temperatures.…”

Section: Geopolymers Prepared Using the Nepheline Concentrate And Thementioning

confidence: 99%

“…The properties of the nepheline concentrate-Cu-Ni slag-liquid glass binder were studied also using curing in water at 20-22 • C. The water resistance coefficient designated as K 28 was determined by the ratio of the compressive strength of the binder cured in water at temperature of 20-22 • C for 28 days to the corresponding value of the binder cured in air under relative humidity of 95 ± 5% at the same temperature for the same time. It was found that, for the binder based on the mechanically activated nepheline concentrate without the slag, the K 28 value was in the range of 0.48-0.60 only.…”

Section: The Nepheline Concentrate-cu-ni Slag-water Bindermentioning

confidence: 99%

Binding Properties of Mechanically Activated Nepheline Containing Mining Waste

2020

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The development of apatite and rare-metal deposits of the Khibiny and Lovozero—the world’s largest ultrabasic massifs located in the Kola Alkaline Province—is accompanied by accumulation of huge amounts of sandy tailings dumps, about half consisting of nepheline. These tailings, on the one hand, pose a real threat of environmental pollution. On the other hand, they are “technogenic deposits” that contain reserves of valuable components (Na2O, K2O, Al2O3, etc.). In this paper, methods of processing of the nepheline-containing mining waste using mechanical activation to produce binding materials—geopolymers and blended cements—are observed. The advantages of combining the nepheline containing tailings dumps with other mining wastes accumulated in the region, such as Cu–Ni slag, are presented.

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“…The increment in compressive strength is due to the formation of N-A-S-H gel and C-S-H gel formation along with the silico-aluminate structure. The compressive strength directly related to the molarity of NaOH solution and amount of GGBFS which forms more compacted microstructure in geopolymer mortar [23]. The rubber inclusion reduces the compressive strength which could be compensated by 10% Nano fly ash addition.…”

Section: B) Compressive Strength Testmentioning

confidence: 99%

Performance of Crumb Rubber Incorporated Ferro Geopolymer Panels under Flexure

2019

IJRTE

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This research work presents the overview of geopolymer mortar application into the ferro cement panel with the incorporation of crumb rubber and Nano fly ash. The geopolymer mortar is prepared by using industrial wastes as a base material such as fly ash and ground granulated blast furnace slag (GGBFS) which generally helps to reduce the level of CO2 emission. Also, the recycled tyre crumb rubber is utilized as a sustainable innovative construction material which is used a partial substitution for sand upto 5% for enhancing the ductility without any strength degradation. These reduces land fill problems and ground water quality degradation problems. Crumb rubber has the ideal capacity to absorb energy from static and other kind of loads. The geopolymer binder preparation is done by utilizing material such as fly ash, GGBFS, alkaline liquid made of NaOH and Na2SiO3 , Nano fly ash. The Nano fly ash is used as an additive which helps in increasing the strength and durability of the element by its pore filling capability. This project aims to enhance the strength of fly ash based geopolymer mortar with the help of GGBFS incorporation. The molarity of alkaline activator, solution to binder ratio and silicate to hydroxide ratio is fixed as 12, 0.4 and 1.5 throughout the process. The mortar cubes and panels were heat cured under hot air oven at 80ᵒ C for 48 hours. The mechanical behavior of geopolymer mortar is assessed by compressive strength test water absorption test. The panel is made of high strength geopolymer mortar and expanded metal mesh with chicken mesh for obtaining higher energy absorption capacity with good deforming ability and less crack pronouncement. The investigation involves finding the initial crack load, ultimate failure load and residual flexural strength ratio. The results show that the tyre inclusion enhances the flexural strength of the ferro geopolymer panel by means of its ductile enhancing capacity

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Compressivestrength study of geopolymer mortar using quarry rock dust

Cited by 25 publications

References 2 publications

Quarry Waste as Precursors in Geopolymers for Civil Engineering Applications: A Decade in Review

Quarry Waste as Precursors in Geopolymers for Civil Engineering Applications: A Decade in Review

Binding Properties of Mechanically Activated Nepheline Containing Mining Waste

Performance of Crumb Rubber Incorporated Ferro Geopolymer Panels under Flexure

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