Mechanical Strength and Chloride Ions’ Penetration of Alkali-Activated Concretes (AAC) with Blended Precursor

Duży, Patrycja; Choińska, Marta; Hager, Izabela; Amiri, Ouali; Claverie, Jérôme

doi:10.3390/ma15134475

Cited by 7 publications

(7 citation statements)

References 46 publications

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“…An important influence of the ground granulated blast-furnace slag on the compressive strength and chloride penetration resistance has been reported by Du ży et al [44]. This can partly be explained by the fact that there was a possible total porosity and effective porosity reduction due to the GGBFS addition.…”

Section: Non-steady-state Chloride Migration Coefficient Of Concretementioning

confidence: 87%

Chloride Diffusion in Concrete Made with Coal Fly Ash Ternary and Ground Granulated Blast-Furnace Slag Portland Cements

et al. 2022

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Ternary Portland cement usage with a high amount of cement constituents different from clinker can afford great climate change advantages by lowering the Portland cement clinker content in the final product. This will contribute to cutting greenhouse gas emissions to close to zero by 2050. Such ternary Portland cements can be composed of different amounts of ground granulated blast-furnace slag (GBFS), coal fly ash (CFA), and clinker (K). Cements made with GGBFS, or CFA boast pozzolanic characteristics. Therefore, they would improve both the concrete compressive strength at later ages and durability. The 28- and 90-days mechanical strength test, non-steady state chloride migration test, described in NT BUILD 492, and natural chloride diffusion test (NT BUILD 443) were performed in concrete. Ternary cements made with GBFS and/or CFA presented better chloride diffusion resistance than concrete made with plain Portland cements. Furthermore, the development of compressive strength was delayed. The service life study was developed for concretes made with ternary cements with regard to the chloride penetration case.

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Section: Non-steady-state Chloride Migration Coefficient Of Concretementioning

confidence: 87%

Chloride Diffusion in Concrete Made with Coal Fly Ash Ternary and Ground Granulated Blast-Furnace Slag Portland Cements

et al. 2022

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“…GGBFS [17,23,[27][28][29]33,35,41,42,45,46,48,49,[51][52][53][54][55][56]59,[69][70][71][72][73][74][75][76][77][78][79][80][81][82][83][84][85][86] Ground granulated blast furnace slag (GGBFS) is a by-product of the iron-making process.…”

Section: It Was Used As a Precursormentioning

confidence: 99%

“…One of the studies explored sodium-carbonate-activated slag glass powder [82]. It was also used as a single source for precursor and as part of binary and ternary blended precursors with a variety of conventional and/or alternative feedstocks [17,[27][28][29]33,35,41,42,45,46,49,[51][52][53][54][55][56]59,67,69,70,72,73,75,76,78,81,83,84]. Additionally, mixed precursors containing different ratios of rice husk (RH), RHA, MK, palm oil fuel ash (POFA), and GGBFS were investigated [79].…”

Section: It Was Used As a Precursormentioning

confidence: 99%

“…It can be used as a single precursor in AABs [31,34,36,38,39,42,56,[61][62][63][64][65][66]. It was also utilised as a part of binary and ternary blended precursors with a variety of conventional and/or alternative precursors [17,22,28,30,32,33,35,37,40,41,[43][44][45][46][47][50][51][52][53][54][55][57][58][59][60]. The ternary mix of waste brick powder (WBP), waste ceramic powder (WCeP), and waste concrete powder (WCP) was examined together with integrating FA in the precursor and activating it using a mix of SH and SS [48].…”

Section: Introductionmentioning

confidence: 99%

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The Obstacles to a Broader Application of Alkali-Activated Binders as a Sustainable Alternative—A Review

et al. 2023

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This paper aims to raise awareness regarding the obstacles limiting alkali-activated binders’ (AABs) application as a sustainable solution in the construction industry. Such an evaluation is essential in this industry, which has been introducing a wide range of alternatives to cement binders yet achieved limited utilisation. It has been recognised that technical, environmental, and economic performance should be investigated for the broader adoption of alternative construction materials. Based on this approach, a state-of-the-art review was conducted to identify the key factors to consider when developing AABs. It was identified that AABs’ adverse performance compared to conventional cement-based materials mainly depends on the choice of which precursors and alkali activators to employ and the regionalised practices adopted (i.e., transportation, energy sources, and data on raw materials). In light of the available literature, increasing attention to incorporating alternative alkali activators and precursors by utilising agricultural and industrial by-products and/or waste seems to be a viable option for optimising the balance between AABs’ technical, environmental, and economic performance. With regard to improving the circularity practices in this sector, employing construction and demolition waste as raw materials has been acknowledged as a feasible strategy.

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“…There have been many research reports on this kind of material, and some have demonstrated sufficient mechanical properties for structural materials [ 3 , 4 ]. It is also believed that they have higher durability against salt penetration and chemical attacks than conventional cement concrete [ 5 , 6 , 7 ]. Fundamental research on the durability of alkali-activated materials in a sewer environment was also reported [ 8 ].…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on the Application of Cementless Material with Industrial By-Products to Steam-Cured Precast Concrete Products

Hata¹,

Sato²,

Miyazawa

2022

Materials

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The purpose of this study was to apply a cementless binder using industrial by-products (fly ash, ground-granulated blast furnace slag, and silica fume) to precast concrete products. In this binder, calcium hydroxide was included as an alkali stimulant but Portland cement was not included. Experiments on the compressive strength and durability of this type of material were conducted and its applicability to precast concrete products was investigated using full-scale specimens. The experiments proved that high-temperature steam curing is effective at obtaining strength development and that compressive strength can be expressed as a linear function of the binder–water ratio. Experimental results of chloride ion diffusion coefficient and sulfuric acid resistance suggested that the proposed material has higher resistances than conventional cement concrete against these deterioration factors. It was also demonstrated that full-scale specimens of a box culvert and a centrifugally compacted pipe using this type of material have almost the same load-bearing capacity and deformation performance as those using conventional cement concrete. It is believed that the proposed material could be used as a construction material instead of cement concrete, contribute to reducing CO2 emission, and increase the reuse of industrial by-products.

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Mechanical Strength and Chloride Ions’ Penetration of Alkali-Activated Concretes (AAC) with Blended Precursor

Cited by 7 publications

References 46 publications

Chloride Diffusion in Concrete Made with Coal Fly Ash Ternary and Ground Granulated Blast-Furnace Slag Portland Cements

Chloride Diffusion in Concrete Made with Coal Fly Ash Ternary and Ground Granulated Blast-Furnace Slag Portland Cements

The Obstacles to a Broader Application of Alkali-Activated Binders as a Sustainable Alternative—A Review

Experimental Study on the Application of Cementless Material with Industrial By-Products to Steam-Cured Precast Concrete Products

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