Development of cement composition with enhanced properties with the addition of microsilica

Zimina, D.A.; Kuznetsov, R.Y.

doi:10.1201/9780429327070-56

Cited by 4 publications

(9 citation statements)

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“…et al and Zimina, D.A. et al [69,70] have demonstrated the sensitivity of microsilica-modified concrete to temperature fluctuations during its hardening process. Under low temperatures, there is a decrease in the rate of hydration and strength enhancement, whereas elevated temperatures result in a sharp increase in these properties.…”

Section: Study Of Promising Methods For Processing and Recycling Wast...mentioning

confidence: 99%

“…Under low temperatures, there is a decrease in the rate of hydration and strength enhancement, whereas elevated temperatures result in a sharp increase in these properties. An analysis of earlier studies [69,70] unveiled that the addition of microsilica significantly bolsters the strength of a concrete mix. The degree of strength augmentation is contingent on several variables, including the mix type, cement quality, microsilica quantity, water-soluble additive volume, filler characteristics, and curing conditions.…”

Section: Study Of Promising Methods For Processing and Recycling Wast...mentioning

confidence: 99%

“…Most researchers argue that Portland cement, despite its advantages, is marred by a significant drawback: as the strength of the cement stone increases, its fragility rises, accompanied by low strength [70,71]. Hence, targeted enhancements in expansive cement mixtures for cementing wells in permafrost regions present considerable interest, offering the potential to modify properties such as strength, frost resistance, expansion, and more [69].…”

Section: Study Of Promising Methods For Processing and Recycling Wast...mentioning

confidence: 99%

“…Moreover, material modification with silica nanoparticles stabilizes key valence interactions such as Ca-Si-H, which is pivotal to concrete cohesion. This modification diminishes calcium leaching and enhances moisture resistance [65][66][67][68][69][70]. By judiciously selecting and developing high-strength refractory concrete mixes, these can be manufactured using standard ready-mix plants.…”

Section: Study Of Promising Methods For Processing and Recycling Wast...mentioning

confidence: 99%

“…Consequently, this improves the overall integrity of the refractory concrete mix [73]. Enhanced particle adhesion is achieved through the close contact of small particles between microsilica concrete and the base of the matrix, serving as reinforcement [66][67][68][69][70]. The shrinkage of microsilica concrete mirrors that of conventional concrete specimens.…”

Section: Study Of Promising Methods For Processing and Recycling Wast...mentioning

confidence: 99%

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Analysis of Experience in the Use of Micro- and Nanoadditives from Silicon Production Waste in Concrete Technologies

Karlina,

Gladkikh

2023

Minerals

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The integration of nanotechnology across various industries has significantly enhanced product quality and manufacturing technologies for diverse materials. Within the construction sector, the adoption of nanomaterials has sparked the advent of innovative construction methods. Extensive studies have been conducted on various nanomaterials, particularly micro- and nanosilica, exploring their use as partial substitutes for cement in concrete formulations. This study aimed to furnish a comprehensive overview of silica’s impact on concrete properties in civil engineering and road construction. Environmental concerns and potential hazards necessitate the development of strategies for managing industrial by-products. Metallurgical processes generate several such by-products, among which is silica fume—a residue from smelting in the silicon and ferrosilicon industries. Waste silica dust and slurries have proven highly effective in creating high-strength, high-performance concrete. The study presents a literature review focusing on micro- and nanosilica derived from production waste at ferroalloy and silicon plants. It includes a comparative analysis of the primary characteristics of microsilica from various sources and examines the extensive use of microsilica as a modifying additive in building materials. Analyzing different concrete compositions with and without fumed silica determined the ranges of results for each indicator. The incorporation of micro- and nanosilica into the concrete mix demonstrated its efficacy. The morphology of waste silica particles, characterized by the smooth and spherical surfaces of micro- and nanosilica particles, significantly influences the workability properties of the concrete.

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Section: Study Of Promising Methods For Processing and Recycling Wast...mentioning

confidence: 99%

Section: Study Of Promising Methods For Processing and Recycling Wast...mentioning

confidence: 99%

Section: Study Of Promising Methods For Processing and Recycling Wast...mentioning

confidence: 99%

Section: Study Of Promising Methods For Processing and Recycling Wast...mentioning

confidence: 99%

Section: Study Of Promising Methods For Processing and Recycling Wast...mentioning

confidence: 99%

See 3 more Smart Citations

Analysis of Experience in the Use of Micro- and Nanoadditives from Silicon Production Waste in Concrete Technologies

Karlina,

Gladkikh

2023

Minerals

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Justification of the use of a vegetal additive to diesel fuel as a method of protecting underground personnel of coal mines from the impact of harmful emissions of diesel-hydraulic locomotives

Korshunov

Eremeeva

Drebenstedt³

2021

PMI

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Equipment with diesel engines is used in all mining enterprises. Monorail diesel transport is of great importance in coal mines, as it facilitates the heavy labor of workers when transporting materials and people, fixing mining workings, refueling and repairing equipment, which leads to an increase in the speed of tunneling operations. Reducing the concentration of harmful gases from diesel-hydraulic locomotives at the workplaces of coal mine locomotive drivers can be ensured by the use of additives to diesel fuel that reduce the volume of harmful gas emissions during the operation of diesel-hydraulic locomotives. Additive ester-based on vegetal oil in the amount of 5 mass % in a mixture with hydrotreated diesel fuel reduces the concentration of carbon monoxide by 19-60 %, nitrogen oxides by 17-98 %, depending on the operating mode of the engine, the smoke content of the exhaust gases is reduced to 71 %. There is an improvement in working conditions at the workplace of the driver of a diesel-hydraulic locomotive by the chemical factor due to the reduction of the class of working conditions from 3.1. to 2.

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Microanalysis of Oil Shale of the Leningrad Field

Saltykova

2020

KEM

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The development of the fuel and energy complex entails a direct increase in energy consumption and the development of fundamentally new types of resources. In the near future, it is predicted that the role of solid fuels, including low-grade ones, will increase in the country's fuel and energy balance, which is primarily due to their large reserves. Russia ranks third after the USA and Brazil in the world for this mineral and, according to the latest estimates, potential reserves of this raw material are in the order of 700,288.85 million t. The article is devoted to the analysis of the chemical composition of oil shale of the Leningrad field. The point microanalysis of oil shale was carried out on the scanning electron microscope TESCAN, and IR spectra of various functional groups that are part of the shale were obtained and analyzed. It has been revealed that the functional groups C-C, C=O, CH2, CH3, SH are typical for the organic component of the oil shale of the Leningrad field. Carbonates, silicates and hydroxides mainly represent the mineral part with impurities represented by phosphates, sulfides and sulfates.

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Development of cement composition with enhanced properties with the addition of microsilica

Cited by 4 publications

References 0 publications

Analysis of Experience in the Use of Micro- and Nanoadditives from Silicon Production Waste in Concrete Technologies

Analysis of Experience in the Use of Micro- and Nanoadditives from Silicon Production Waste in Concrete Technologies

Justification of the use of a vegetal additive to diesel fuel as a method of protecting underground personnel of coal mines from the impact of harmful emissions of diesel-hydraulic locomotives

Microanalysis of Oil Shale of the Leningrad Field

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