Improving of the monolithic foamconcrete quality for used in the high-rise constructions

Sychova, Anastasia; Solomahin, Andrey; Kotovich, Vitaliy; Svatovskaya, Larisa; Kamenev, Yuriy

doi:10.1051/e3sconf/20183302058

Cited by 22 publications

(10 citation statements)

References 3 publications

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“…The increase of some technical properties in 1-10 years is the result of the study which examines heavy metal ions. As mentioned above heavy metal ion silicate hydrates have a lower solubility product than that of hydroxides and the results of properties increase can be explained by silicate hydrates' formation inside the cement stone [7][8][9][10][11][12]. But when combining with silica sol absorption or sol solution sprinkling, lithosynthesis method is certain to lock substances in an artificial stone.…”

Section: Resultsmentioning

confidence: 99%

Lithosynthesis in transport construction for geosphere protection

et al. 2018

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Geoecological problems of lithosphere protection in transport construction are of great importance nowadays. The article deals with the research of the new lithosynthesis technology which can be used for geosphere protection in transport construction. Lithosynthesis is a new method of geosphere purification by means of engineering structures and building materials. The main aim of the paper is to show a possibility to restore lithosphere using mineral artificial stones of different nature, e.g. foam concrete or phosphates. Both theoretical, namely thermodynamic, method and experimental one are used in the study. Two techniques of lithosynthesis are demonstrated in the paper. The first technique is to apply so-called the "stone sponge" to absorb pollutions and detoxicate them. The second technique is formation of the artificial phosphate stone to detoxicate pollutions during hardening. The level of concentration of heavy metal ions to be detoxicated by means of foam concrete lithoreactions is determined. The study suggests creation of a new lock surface, e.g. through sols' use, after detoxication of pollutions. * Corresponding author: lbsvatovskaya@yandex.ru , 0 (2018) https://doi.org/10.1051/matecconf /201823901005 MATEC Web of Conferences 2018 TransSiberia 239 1005

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Section: Resultsmentioning

confidence: 99%

Lithosynthesis in transport construction for geosphere protection

et al. 2018

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“…On the other hand, silica sol complex use preserved concrete from the environment impact. That is why these technologies are named "safe technologies" [6][7][8][9][10][11][12].…”

Section: Resultsmentioning

confidence: 99%

Modern technologies of a mineral material surface improvement for transport construction

2018

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The paper deals with technologies of a mineral material surface improvement for transport construction. Mineral surface is important because of its hardness, durability and other properties. Besides, it is necessary to protect it from aggressive environment. The purpose of the article is to introduce a few techniques of silica sol use in order to change mineral surface properties. The absorption, irrigation and watering processes were applied as the techniques. Both silica sol and its mixes with solutions contained Ca(II) ions were used as the substances. The experimental methods were carried out during the study. The experiment results have shown that hardness of the mineral material and foam concrete surface was increased up to 60% and the level of the soil strengthening was more than 0,5 MPa. It means that if silica sol and solutions containing Ca(II) ions are used a soil strength is increased more than 40-50%. The results of the study are particularly useful for construction of motorways in order to extend their service life.

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“…Water extracts from the system that were made a different times (1 month through to more than 10 years) revealed the removal of heavy metal ions. The overall physico-chemical processes in such systems are spontaneous, and triggered by a decrease in Gibbs free energy, evident from the change in the system's energy reserve (Table 8) [7][8][9][10][11][12]. Based on data in Table 8, we can state that system's properties occur spontaneously, and are linked to a negative change in the Gibbs free energy.…”

Section: Resultsmentioning

confidence: 99%

Lithosphere Protection with Hardening Phosphate-Containing Soil-Cement Technology

Svatovskaya¹,

Sychova²,

Sychov³

2018

IJET

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This research is relevant in the light of a need to protect lithosphere from pollution. A solution to this problem can be the exercise of a geoecoprotective function by using building and construction technologies. Phosphate-containing bonding agents usually have low solubility in water. They are made of aluminosilicates that occur in common clay. These minerals react with phosphoric acid to release phosphates and silica gel with absorption properties. The purpose of this research is to make fake rocks from phosphate clay material, intended for building and construction purposes, and to investigate their longevity. The material used was treated to neutralize and detoxify the mobile ionic contaminants and heavy metal compounds, as well as petroleum pollutants, so that at the end we could get construction material like fake rocks or improved aggregates that would be good for the environment. These cement systems are called the geoecoprotective systems. The leading methods that were applied were thermodynamic and experimental studies of service and geoecoprotective properties of phosphate-containing cement systems, more specifically fake landscape rocks. Selected studies lasted for more than 10 years, and were carried out in accordance with the guidelines, adopted in the Russian Federation. This research shows that phosphate-containing cement systems made from contaminated clay/sandy artificial soils have long-lasting properties like strength, frost resistance, water resistance and contaminant binding. From this perspective, they are good for building and construction. For example, they can be used to improve the contaminated soil on road construction sites by detoxifying it until water-resistant products, and to make long-lasting water-resistant solutions from local raw materials that would be good for waste storage.

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Improving of the monolithic foamconcrete quality for used in the high-rise constructions

Cited by 22 publications

References 3 publications

Lithosynthesis in transport construction for geosphere protection

Lithosynthesis in transport construction for geosphere protection

Modern technologies of a mineral material surface improvement for transport construction

Lithosphere Protection with Hardening Phosphate-Containing Soil-Cement Technology

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