Alkali-activated slag binders from rock-wool production wastes

Erofeev, Vladimir; Rodin, A. I.; Yakunin, V. V.; Bogatov, Andrey; Бочкин, Виктор; Chegodajkin, A. M.

doi:10.18720/mce.82.20

Cited by 17 publications

(6 citation statements)

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“…When using the actual granulometric composition without preparation of raw materials, a significant decrease in strength is noted due to the low intensity of hydration processes that form the cement matrix. The need for additional grinding is also noted in [17]. It is possible that it is rational to adhere to the known limits of fineness of grinding in the production of a binder from dust, to carry out sifting through a 0.016 sieve, followed by mechanical activation for 120 s. With prolonged grinding of dust, a cemented crust is formed on the walls of the mill, which is a defect in the grinding process.…”

Section: Discussionmentioning

confidence: 99%

“…• development of complex structured composite cements with a decrease in the content of clinker and an increase in the content of additives of natural and technogenic origin in them [10][11][12][13][14]; • development of the production of clinker-free binders, alternative in properties to Portland cement [15][16][17][18][19].…”

Section: Introductionmentioning

confidence: 99%

“…In slag-alkali binders and geopolymers, as a rule, it is proposed to use either wastes consisting of mineral elements (beads, slags, dust) formed at different stages [17] or mineral wool as a recycling process [34].…”

Section: Introductionmentioning

confidence: 99%

“…Erofeev V. et al [17] found that the process of structure formation in the system "Mineral wool production waste-Water-NaOH" is most effective at a NaOH/waste ratio of 2/100-3/100. The best indicators of the physical and mechanical properties of the obtained binders are achieved with a waste grinding fineness equal to 400-450 m 2 /kg.…”

Section: Introductionmentioning

confidence: 99%

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Alkali-Activated Binder Based on Cupola Dust of Mineral Wool Production with Mechanical Activation

Федоров

Sinitsin

2022

Buildings

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The development of low-carbon alkali-activated binders based on production waste is one of the most sought-after areas of development of building materials science. The article examines the results of studies of the structures of cupola dust and the assessment of its ability to hydrate when exposed to alkaline activation. Technological preparation of dust by sifting it through a 0.16 mm sieve and subsequent mechanical activation for 120 s to a specific surface area of 733 m2/kg is proposed. The best results were shown by the composition of cupola dust with an alkaline activator of 50 wt.% 8.3 M NaOH and 50 wt.% Na2SiO3. After 28 days of natural hardening for this composition, the bending strength was 12.7 MPa and the compressive strength was 68.3 MPa. The analysis of the influence of hardening conditions showed that the temperature–humidity treatment of concrete at a temperature of 90 °C for 12 h accelerates the process of curing to 80–90% of natural conditions. The porosity of the samples after heating was established, which is 24–25%. The mineralogical composition of the products of the cement matrix structure’s formation, which is represented by minerals of the zeolite group, was specified.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Alkali-Activated Binder Based on Cupola Dust of Mineral Wool Production with Mechanical Activation

Федоров

Sinitsin

2022

Buildings

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“…The production of modified asphalt mixes using recycled materials helps to reduce the large amount of waste generated from various sources. It also reduces the consumption of fossil materials, therefore minimizing the impact of the road industry on the environment [45][46][47][48].…”

Section: Introductionmentioning

confidence: 99%

Correlation Dependence between Hydrophobicity of Modified Bitumen and Water Saturation of Asphalt Concrete

Dyuryagina,

Byzova,

Ostrovnoy

et al. 2023

Applied Sciences

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Improving the durability of asphalt concrete road surfaces by increasing their moisture resistance is an urgent task. Modified bituminous binders should be compacted into coatings with the lowest possible water saturation. The purpose of this study was to establish the effect of modifiers on the hydrophobicity of bituminous films in order to achieve minimum water saturation and to build a mathematical model of the wetting process with water. As modifiers, we used a product of amination of distillation residues of petrochemistry, waste sealing liquid (a solution of high molecular weight polyisobutylene in mineral oil), and a condensation product of polyamines and higher fatty acids. The water-repellent effect of modifiers was studied by measuring the contact angle of bituminous film with a water drop. The water saturation of asphalt concrete samples was determined by the amount of water absorbed by asphalt concrete at 20 °C. A close correlation was revealed between the hydrophobicity of modified bitumen and the water saturation of asphalt concrete. Generalized equations and a graphical representation of a function of several variables allowed for optimizing compositions by the content of modifiers to achieve the required performance properties of asphalt concrete coatings.

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Engineering Calculations of Acidifier Retaining Walls During Water Treatment Facilities Designing

Rimshin

Roshchina

Ketsko

et al. 2022

Lecture Notes in Civil Engineering

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Alkali-activated slag binders from rock-wool production wastes

Cited by 17 publications

References 0 publications

Alkali-Activated Binder Based on Cupola Dust of Mineral Wool Production with Mechanical Activation

Alkali-Activated Binder Based on Cupola Dust of Mineral Wool Production with Mechanical Activation

Correlation Dependence between Hydrophobicity of Modified Bitumen and Water Saturation of Asphalt Concrete

Engineering Calculations of Acidifier Retaining Walls During Water Treatment Facilities Designing

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