On effect of superplasticizers and mineral additives on shrinkage of hardened cement paste and concrete

Nesvetaev, Grigory; Koryanova, Yulia; Zhilnikova, T.N.

doi:10.1051/matecconf/201819604018

Cited by 28 publications

(15 citation statements)

References 5 publications

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“…However, it should be noted that the content of alkali metal oxide K2O in the aspiration dust sample is 6.43%, whereas in the clinker, it decreases to 1.57% (Table 2). This can be attributed to the fact that clinker dust was formed in the hot zone of solid-phase synthesis in the rotary kiln at 1300 °C and higher temperatures, where alkali metal oxides are burnt out and decomposed [5][6][7][8].…”

Section: Methodsmentioning

confidence: 99%

Utilization of Cement Kiln Dust in Production of Alkali-Activated Clinker-Free Binders

Bataev¹,

Salamanova²,

Murtazaev³

et al. 2019

Proceedings of the International Symposium "Engineering and Earth Sciences: Applied and Fundamental Research" Dedicated to the

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During burning of Portland cement clinker, a large amount of both clinker and aspiration dust accumulates in electrostatic precipitators and rotary kilns; therefore, rational use of these products containing a certain portion of a complete raw material is an important task in the cement industry. It is noted that reuse of dust from electrostatic precipitators through recycling in the kiln is impossible, since it contains a high amount of alkali-containing impurities, and this will have a negative effect on the clinker quality. Therefore, the paper presents a practicable method of utilization of cement kiln dust in production of alkaliactivated clinker-free binders and concrete based on these binders. The results obtained in the study of cement kiln dust are presented, and the energy dispersive and comparative analyses of the test powders are carried out. The results of chemical analysis are used to determine the relationship between oxides in the form of appropriate moduli and saturation factor. Recipes for alkaliactivated binders are developed, and their properties are studied.

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Section: Methodsmentioning

confidence: 99%

Utilization of Cement Kiln Dust in Production of Alkali-Activated Clinker-Free Binders

Bataev¹,

Salamanova²,

Murtazaev³

et al. 2019

Proceedings of the International Symposium "Engineering and Earth Sciences: Applied and Fundamental Research" Dedicated to the

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“…It has been established that the mineral components added to the composition of both the binder and the concrete, after preliminary mechanical activation, to a certain degree of dispersion, allow significantly reducing the consumption of Portland cement increase the design class of concrete and produce products with certain properties of lower cost. In addition, there is a positive effect on the degree of hydration of clinker minerals and the formation of an improved concrete microstructure [1,5,[6][7][8][9][10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Development of Multicomponent Binders Using Fine Powders

Salamanova¹,

Murtazaev²,

Аласханов³

et al. 2019

Proceedings of the International Symposium "Engineering and Earth Sciences: Applied and Fundamental Research" Dedicated to the

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The paper discusses the issues associated with the development of multi-component binders and high-quality concrete on their basis. The basis for the preparation of such binders is the use of finely divided mineral additives of natural and man-made origin. Particular attention is paid to the aggregate, the strength of coarse aggregate should be at least 20% higher than the strength of concrete, and the maximum particle size should not exceed 8-20 mm. To date, considerable experience has been gained in the production of multicomponent binders, and the results of the research carried out in this direction have shown that the raw material potential of the republic allows obtain high-quality concrete of class B 30-40. As if to expand the geography of natural resources regions of the North Caucasus Federal District, it is possible to obtain concrete of higher strength.

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“…Concrete is one of the oldest materials, but its potential and possibilities seem inexhaustible (Murtazaev et al 2016;Nesvetaev et al 2018;Stelmakh et al 2018), since at all times of its existence and in the future this material will occupy a leading place among a huge variety of building compositions.…”

Section: Introductionmentioning

confidence: 99%

Multicomponent Binders with Off-Grade Fillers

Murtazaev

Salamanova

Saydumov

et al. 2019

Springer Proceedings in Earth and Environmental Sciences

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The paper deals with issues related to development of multicomponent binders (MCB) and high-quality concretes based on them. The production of such binders is based on the use of finely divided mineral additives of natural and technogenic origin. Particular attention is paid to the aggregate, the strength of coarse aggregate should be at least 20% higher than the strength of concrete, and the maximum particle size should not exceed 8-20 mm. At present, considerable experience was accumulated for production of multicomponent binders, and the results of studies conducted in this direction showed that the raw material potential of the Republic allowed obtaining high-quality class B30-40 concrete, and if we expanded the geography of the use of natural resources by regions of the North Caucasus, we could produce concretes with higher strength.

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On effect of superplasticizers and mineral additives on shrinkage of hardened cement paste and concrete

Cited by 28 publications

References 5 publications

Utilization of Cement Kiln Dust in Production of Alkali-Activated Clinker-Free Binders

Utilization of Cement Kiln Dust in Production of Alkali-Activated Clinker-Free Binders

Development of Multicomponent Binders Using Fine Powders

Multicomponent Binders with Off-Grade Fillers

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