Ultra-high-performance geopolymer concrete: A review

Qaidi‏, Shaker; Atrushi, Dawood Sulaiman; Mohammed, Ahmed; Ahmed, Hemn Unis; Faraj, Rabar H.; Emad, Wael; Tayeh, Bassam A.; Najm, ‎Hadee Mohammed

doi:10.1016/j.conbuildmat.2022.128495

Cited by 114 publications

(32 citation statements)

References 106 publications

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“…Iron ˑmine ˑtailings-geopolymer ˑcomposites ˑare ˑproduced ˑin ˑa ˑway ˑsimilar ˑto ˑcopper ˑmine ˑtailings-geopolymer ˑcomposites, ˑwith or without the ˑincorporation ˑof ˑalumina-silicate ˑsource ˑcomponents. ˑIn ˑone investigation, the compressive ˑstrength ˑof ˑan ˑiron ˑmine ˑtailingsgeopolymer ˑcomposite ˑactivated ˑby ˑsodium silicate was improved ˑwith ˑa ˑrise ˑin ˑcuring ˑtemperature ˑup ˑto ˑ80 ˑºC ˑand ˑa ˑrise ˑin ˑcuring ˑperiod ˑup ˑto ˑ7 ˑdays, ˑafter ˑwhich ˑthe ˑcompressive ˑstrength ˑdeclined [132][133][134].…”

Section: Mine Tailings As Precursors For Geopolymermentioning

confidence: 95%

“…ˑAccording to its findings, ˑthe ˑmaximum ˑcompressive ˑstrength ˑof ˑgold ˑmine ˑtailings-geopolymer ˑcomposites was discovered ˑat ˑa ˑpotassium ˑsilicate/potassium ˑhydroxide proportion ˑof ˑ1.1. ˑAccording ˑto ˑits ˑfindings, ˑraising ˑthe ˑcuring ˑtemperature ˑfrom ˑ65 ˑto ˑ100 ˑºC ˑenhanced ˑthe ˑcompressive ˑstrength ˑof ˑpotassium ˑaluminate ˑand ˑpotassium ˑhydroxide-activated ˑgold ˑmine tailings-geopolymer composites [122,133,134]. The researchers ˑalso ˑdiscovered ˑthat ˑthe ˑcompressive ˑstrength of geopolymer ˑactivated ˑby ˑpotassium ˑaluminate ˑand ˑpotassium hydroxide activators ˑis ˑgreater ˑthan ˑthat ˑof ˑgeopolymer ˑactivated ˑby ˑpotassium ˑsilicate ˑand ˑpotassium ˑhydroxide ˑactivators, ˑeven ˑwhen ˑthe ˑcuring ˑtemperature ˑis ˑraised ˑto up to 100 ºC.…”

Section: Mine Tailings As Precursors For Geopolymermentioning

confidence: 99%

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Mine tailings-based geopolymers: Mechanical and physical properties

Ahmed¹

2022

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<p> </p> <p>The mining sector generates a substantial quantity of stone waste and tailings, which constitutes an environmental risk. The most prevalent method for disposing of this industrial waste is dumping, which contributes to soil deterioration and water contamination while acquiring precious land. It can be recycled using a number of processes, such as the promising geopolymerization technique, which transforms waste into value. This study reviews current developments in the manufacturing of mine tailings-based geopolymer composites from industrial waste as a possible sustainable building material. This paper also gives in-depth studies on the characteristics and behaviors of mine tailings composites used in geopolymer manufacturing, including physical and mechanical properties. This review also identifies knowledge gaps that must be filled in order to advance mine tailings composites for geopolymers.</p>

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Section: Mine Tailings As Precursors For Geopolymermentioning

confidence: 95%

Section: Mine Tailings As Precursors For Geopolymermentioning

confidence: 99%

Mine tailings-based geopolymers: Mechanical and physical properties

Ahmed¹

2022

Preprint

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“…ˑSince ˑthe ˑrisk ˑof ˑcorrosion ˑof ˑsteel ˑfiber ˑcan ˑbe ˑevidently ˑincreased ˑnear ˑthe ˑvoids at the fiber and matrix interface [93]. Besides the corrosion ˑrisks, ˑthe ˑporosity ˑcould ˑincrease the occurrence of ˑaggressive ˑionic ˑattack, and rapid ˑpenetration ˑto ˑthe ˑconcrete ˑsuch ˑas chloride and sulphate ˑ [78] [ [94][95][96].…”

Section: Homogeneity and Porositymentioning

confidence: 99%

“…ˑmight ˑlead ˑto ˑconcrete ˑdensification. ˑPreviously, ˑthe ˑeffects ˑof ˑvarious ˑadditional ˑmaterials ˑon ˑthe ˑmechanical ˑperformance, ˑpermeability, ˑand ˑchloride ˑdiffusion ˑof ˑa ˑcementitious material with and without fiber reinforcement ˑwere ˑinvestigated[89][90][91][94][95][96]. ˑOne ˑof ˑthese ˑextra materials could be ˑdescribed ˑas ˑhaving ˑpozzolanic ˑproperties.…”

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confidence: 99%

Ultra-High-Performance Fiber-Reinforced Concrete: Fresh Properties

Qaidi‏¹

2022

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UHPC is a cement-based composite that is used in new construction and/or renovation of existing structures to increase their service life. It is a unique composite material that may be used as an alternative to concrete in harsh conditions. Following decades of research and development, a wide range of commercial UHPC compositions are now accessible across the world to fulfill the growing number of applications and demand for high-quality construction materials. Although UHPC has significant advantages over conventional concrete, its use is limited because of rigid design restrictions and excessive pricing. As a consequence, a detailed analysis of UHPC's durability qualities is necessary to provide critical information for material testing requirements and methods, as well as to widen its practical applications. The goal of this study is to learn more about UHPC and to encourage more research and use of UHPC.

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“…ˑ using mine tailings as a geopolymer approach will ˑ not ˑ only ˑ slow ˑ down ˑ the ˑ accumulation ˑ of mine tailings and reduce the level of ecological ˑ contamination, [28][29][30][31][32], ˑ and ˑ another ˑ particular ˑ usage ˑ [13][14][15][16][17]. The mine tailings are inhomogeneous and have a complex ˑ mineral, ˑ aggregate, ˑ and ˑ chemical ˑ composition ˑ [11,[33][34][35][36][37][38][39]. ˑ Furthermore, ˑ although ˑ having ˑ relatively ˑ low ˑ quantities ˑ of ˑ valuable ˑ components, ˑ mine ˑ tailings ˑ contain ˑ hazardous ˑ and ˑ toxic ˑ compounds ˑ connected ˑ with ˑ waste ˑ products ˑ or ˑ mining ˑ activities ˑ [40][41][42][43][44].…”

Section: Introductionmentioning

confidence: 99%

Mine Tailings-Based Geopolymers: Durability, Microstructure, Thermal and Leaching Properties

He¹

2022

Preprint

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The mining sector generates a substantial quantity of stone waste and tailings, which constitutes an environmental risk. The most prevalent method for disposing of this industrial waste is dumping, which contributes to soil deterioration and water contamination while acquiring precious land. It can be recycled using a number of processes, such as the promising geopolymerization technique, which transforms waste into value. This study reviews current developments in the manufacturing of mine tailings-based geopolymer composites from industrial waste as a possible sustainable building material. This paper also gives in-depth studies on the characteristics and behaviors of mine tailings composites used in geopolymer manufacturing, including durability, microstructure, thermal and leaching properties. This review also identifies knowledge gaps that must be filled in order to advance mine tailings composites for geopolymers.

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Ultra-high-performance geopolymer concrete: A review

Cited by 114 publications

References 106 publications

Mine tailings-based geopolymers: Mechanical and physical properties

Mine tailings-based geopolymers: Mechanical and physical properties

Ultra-High-Performance Fiber-Reinforced Concrete: Fresh Properties

Mine Tailings-Based Geopolymers: Durability, Microstructure, Thermal and Leaching Properties

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