Experience of Use of Adds of Micro- And Nanosilica From the Wastes of Silicone Production in Concrete Technologies

Munkhtuvshin, Damdinsuren; Balabanov, Vadim; Putsenko, K N

doi:10.21285/2227-2917-2017-3-107-115

Cited by 9 publications

(6 citation statements)

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“…An analysis of the microstructure of the modified gypsum matrix showed a compaction of the crystalline matrix, a change in the morphology of crystalline hydrates with the formation of blocks of differently oriented crystals interconnected by the products of the interaction of nano-silica and cement minerals. In the structure of the material, there is also a local intergrowth of gypsum individuals, which are covered over the entire surface with a gel-like material based on calcium hydrosilicates, which contributes to an overall increase in the strength and water resistance of the gypsum matrix which is also confirmed by the results of the microanalysis [11][12][13].…”

Section: Resultsmentioning

confidence: 62%

“…A new modifier of binder properties is nanosilica, an additive containing micro and nanoparticles of silicon oxide. It has been demonstrated that the introduction of nano-silica into the composition of cement binders and concrete significantly reduces the porosity of the material and increases its strength and corrosion resistance [11][12][13]. At the same time, the use of nano-silica together with other types of additives (metakaolin, nanotubes) allows for more complete filling of the pore spaces of binders, resulting in high strength concretes and cement [14,15].…”

Section: Introductionmentioning

confidence: 99%

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Experimental study for Gypsum Materials Enhanced by Compound Additives Based on Nano-Silica

Elrefaei,

Batova

2023

ERJ. Engineering Research Journal

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Gypsum is naturally a soft mineral with low strength and with high porous. Without adding additives, it may not possess the desired level of strength for certain applications and have alow moisture resistance, low fire resistance, and low overall durability. Nano-silica and active mineral additives can significantly increase the mechanical properties and structure formation of gypsum binder, making them more durable and resistant to cracking or breaking. To improve the properties of the additive, the nanosilica has been subjected to sonication. It was confirmed that the effect of sonication allowed nanosilica to be used as a key component in additives and that there was no relationship between the initial particle size and this effect. Activated Portland cement and nano-silica have a positive effect on the mechanical properties of the material, and this effect is observed from the hydration process to hardening. The optimal range of nano-silica content was established, equal to 0.05 -0.1%, while the increase in compressive strength reaches 30-40% compared to the control composition, water resistance increases to 0.47.The modified matrix is characterized by greater density and compressive strength. This result is due to the formation of new growths based on hydrated calcium silicate capable of binding to gypsum crystals and filling the pores at the same time. new growths based on hydrated calcium silicate were identified by IR spectra and physicochemical analyzes including differential thermal analysis, scanning electron microscopy and energy dispersive X-ray spectroscopy.

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Section: Resultsmentioning

confidence: 62%

Section: Introductionmentioning

confidence: 99%

Experimental study for Gypsum Materials Enhanced by Compound Additives Based on Nano-Silica

Elrefaei,

Batova

2023

ERJ. Engineering Research Journal

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“…[3]. In accordance with this, the relevance of this work is the need to develop new technologies to produce composite materials with a unique combination of mechanical and physical properties, based on silicon production waste-microsilica-acquires an important feature [4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Development of New Composite Materials Based on ‘Metal–Non-Metal’ with Improved Functional Properties

Akhmetova¹,

Tuyskhan²,

Ulyeva³

et al. 2022

Metallofiz. Noveishie Tekhnol.

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The article is devoted to the possibility of using production waste with various types of binder in order to obtain new composite materials with improved functional properties. The article presents the results of experiments on obtaining new materials based on wastes of silicon and metallurgical industries-microsilica powder and zinc ash using metal (liquid tin) and non-metal (liquid glass) as binders. State diagrams during the interaction of these components, properties and microfractography of samples of fabricated materials are obtained, reviewed and analysed. The influence of binders on the strength properties of the matrix of the obtained composite materials is revealed. The resulting material of the metal-non-metal system has increased values of strength properties.

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“…When it interacts with cement slurry, conditions are created for the transformation of brittle calcium hydroxide into crystalline calcium silicate. Hydrate that creates conditions for increasing the strength of cement stone, and microspheres fill the space that is released by water [1,2].…”

Section: Introductionmentioning

confidence: 99%

Analysis of the Effect of Nanosilicates on the Strength and Porosity of Cement Stone

Zimina

Zhapkhandaev

Petrov

2020

KEM

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The paper deals with well cementing, which is a complex engineering task requiring special tools and technologies. The authors give an example of complications that arise due to the poor quality of well cementing. The aim of the work is to study the mineral ultrafine additive-nanosilicates, which increase the strength of cement stone and reduce its porosity. Nanosilicate is formed during the cleaning of ore-thermal furnaces in metallurgical plants. One of such technologies is application of metallurgical waste, since it can improve the environment by cleaning the sludge fields from waste and reduce the cost of cement slurry by reducing the amount of cement in the composition. The study provides practical data showing that nanosilicates positively affect the strength of cement stone, reducing its porosity.

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Experience of Use of Adds of Micro- And Nanosilica From the Wastes of Silicone Production in Concrete Technologies

Cited by 9 publications

References 0 publications

Experimental study for Gypsum Materials Enhanced by Compound Additives Based on Nano-Silica

Experimental study for Gypsum Materials Enhanced by Compound Additives Based on Nano-Silica

Development of New Composite Materials Based on ‘Metal–Non-Metal’ with Improved Functional Properties

Analysis of the Effect of Nanosilicates on the Strength and Porosity of Cement Stone

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