A Review on the Durability of Alkali-Activated Fly Ash/Slag Systems: Advances, Issues, and Perspectives

Arbi, K.; Nedeljković, Marija; Zuo, Yibing; Ye, Guang

doi:10.1021/acs.iecr.6b00559

Cited by 177 publications

(65 citation statements)

References 126 publications

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“…Regarding blended pastes (S30, S50, S70), their reference spectra for samples at 28,6 180, 393 days have the main band assigned to Si-O stretching vibrations of the SiQ 2 7 tetrahedra located at 960, 953, 947 cm -1 , which shifts to lower wavenumbers with increasing 8 GBFS content, i.e. with increasing Ca/Si ratio, indicating progressive depolymerisation of the 9 silicate chains as reported by Yu et al [56].…”

Section: Polymerization Degree Determined By Atr-ftirmentioning

confidence: 60%

“…In comparison with OPC-6 based materials, AAM might have better mechanical properties, stronger interfacial transition 7 zone (ITZ), and better fire and chemical resistance [4]. However, the long-term properties of 8 AAM, specifically carbonation resistance, are still unknown, which limits their application in 9 engineering practice [5,6]. 10…”

Section: Introductionmentioning

confidence: 99%

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Effect of natural carbonation on the pore structure and elastic modulus of the alkali-activated fly ash and slag pastes

Nedeljković

Šavija

Zuo

et al. 2018

Construction and Building Materials

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Section: Polymerization Degree Determined By Atr-ftirmentioning

confidence: 60%

Section: Introductionmentioning

confidence: 99%

Effect of natural carbonation on the pore structure and elastic modulus of the alkali-activated fly ash and slag pastes

Nedeljković

Šavija

Zuo

et al. 2018

Construction and Building Materials

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“…Various studies have reported the high potential of ground-granulated blast-furnace slag (GGBFS) as a main binder in alkali-activated materials. The developed alkaliactivated slag binders (AASs) contains high calcium content [11], which could lead to rapid setting time [12], low hydration heat [13], and acceptable mechanical and durability properties [13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Durability of the Reinforced One-Part Alkali-Activated Slag Mortars with Different Fibers

Abdollahnejad

Mastali

Falah

et al. 2020

Waste Biomass Valor

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This paper investigates the effects of reinforcing one-part alkali-activated slag binders (OAASs) with different types of fiber (steel, polyvinyl alcohol [PVA], basalt, and cellulose) and fiber combinations (single and hybrid) on the mechanical and durability properties of OAASs. All OAASs were reinforced by a 1% fiber volume fraction. Compressive and flexural strengths were the mechanical properties, which were addressed. The durability of the reinforced OAASs was examined based on water absorption by immersion and capillary, acid resistance, high temperature resistance, carbonation resistance, and freeze/thaw resistance. The experimental results showed that the fiber type and combination greatly affects the mechanical and durability properties of OAASs. Moreover, the influence of fiber type and combination on high temperature resistance and freeze/thaw resistance is greater than the influence on acid resistance and carbonation resistance. Graphic AbstractKeywords One-part alkali activated binders · Fiber reinforced mortars · Mechanical and durability properties · Fiber type · Fiber combination * Z. Abdollahnejad

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“…Such formation model and mechanism will be discussed in section Formation Model and Mechanism of Geopolymer. Recently, the AAS geopolymers have been investigated from multiple angles, such as the synthesis mechanism and chemistry (Provis, 2013;Provis and Bernal, 2014;Provis et al, 2015), properties and durability Arbi et al, 2016;Ding et al, 2016), life cycle analysis (Habert et al, 2011;Ouellet-Plamondon and Habert, 2015), and multi-field applications (MacKenzie, 2015;Rao and Liu, 2015;Luukkonen et al, 2019). Yet, the available review related to the SAP geopolymer is limited even though such type of geopolymer was termed as aluminosilicate phosphate cement (Khabbouchi et al, 2017;Katsiki, 2019), phosphoric acid-based geopolymer (Liu et al, 2012;Guo et al, 2016), phosphate-based geopolymer , acid-based geopolymers (Mathivet et al, 2019), and phosphate-bonded materials (MacKenzie, 2015).…”

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confidence: 99%

Silico-Aluminophosphate and Alkali-Aluminosilicate Geopolymers: A Comparative Review

2019

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Chemically activated materials (often termed as geopolymer) have received attracting attentions in civil, material and environmental research fields as a toolkit alternative to traditional Portland cement in specific applications. This paper presents a comparative review on silico-aluminophosphate (SAP) geopolymers in terms of definition, chemistries involved during geopolymerization, mechanical performance, durability, environmental impacts, and their potentials in applications relative to conventional alkali-aluminosilicate (AAS) geopolymers. Recommendations for future applications are also highlighted. It is found that S-A-P gels with six-coordinated aluminum environment dominate in SAP geopolymers, while the aluminum in N-A-S-H gels formed in the AAS geopolymers is characterized by four-coordinated features. Besides, the slow performance development of SAP geopolymer matrix under ambient temperature curing can be compensated through incorporating additional countermeasures (e.g., metal sources) which allow the tailored design of such geopolymers for certain in-situ applications. Generally, the calcium-bearing C-(A)-S-H gels co-existing with N-A-S-H gels are dominant in AAS geopolymers, while the S-A-P gels enhanced by phosphate-containing crystalline/amorphous phases are the main products in SAP geopolymers. The SAP geopolymers show their environmental friendliness relative to the AAS geopolymers due to the utilization of phosphate activators that require lower production energy relative to silicate-containing activators. However, the higher cost of phosphate activators may confine the applications of SAP geopolymers in some exquisite or special fields.

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A Review on the Durability of Alkali-Activated Fly Ash/Slag Systems: Advances, Issues, and Perspectives

Cited by 177 publications

References 126 publications

Effect of natural carbonation on the pore structure and elastic modulus of the alkali-activated fly ash and slag pastes

Effect of natural carbonation on the pore structure and elastic modulus of the alkali-activated fly ash and slag pastes

Durability of the Reinforced One-Part Alkali-Activated Slag Mortars with Different Fibers

Silico-Aluminophosphate and Alkali-Aluminosilicate Geopolymers: A Comparative Review

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