Evaluation of the possibility to use powders of polymineral silica-containing sands as a hydrophobizing coating

Morozova, Marina; Ayzenshtadt, A. M.; Akulova, M. V.; Frolova, M. A.; Shamanina, A. V.

doi:10.15828/2075-8545-2021-13-4-222-228

Cited by 2 publications

(4 citation statements)

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“…Chemical resistance of polymer concretes is provided by graphite and related materials. To compare the stability of different samples based on FD resin in aggressive enviroment, tests were performed in the same aggressive solutions of polymer concrete samples based on FA monomer [13,21,23].…”

Section: Resultsmentioning

confidence: 99%

“…Therefore, to improve these qualities, some experiments were carried out on polymer concrete produced on a base of various aggregates, kinds of resin and hardeners. Determination of polimer concrete properties on furfural-based binder was carried out according to the appropriate methods of construction material testing [13].…”

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confidence: 99%

“…The ratio of the resin and aggregate amounts to get dense polymer concrete is usually selected in the same way as for cement concrete (the resin should cover the aggregate grains and fill the voids between them). The introduction of nanostructured microfiller into the polymer concrete composition will save expensive resin [12][13][14].…”

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confidence: 99%

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Polymer concrete production technology with improved characteristics based on furfural for use in hydraulic engineering construction

Moldamuratov¹,

Imambayeva²,

Imambaev³

et al. 2022

Nanobuild

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Introduction. Research of polymer concrete properties show that it differs favorably from conventional concrete by such indicators as mechanical strength, resistance to aggressive impact of various environments, water resistance, abrasion resistance, water-repellency and frost resistance. Currently, it is possible to obtain polymer concrete with characteristic and chemical properties -specified density, strength, deformability, ductility, and corrosion resistance. Methods and materials. The research is carried out by comparing laboratory tests of polymer concrete based on furfural binder. Furfural has a high reactivity and can form resin compounds with many chemicals. Diphenylamine was added to furfural in different proportions. Benzenesulfonic acid, sulfuric acid and their mixture at a ratio -1:1 by weight were used as hardeners. Crushed sand or ground andesite based on nanostructured microfiller served as aggregate for various compositions of polymer solutions. The polymer concrete strength, chemical resistance, lasting properties, water resistance, abrasion resistance, metal adhesion were tested during the research. Structural changes in properties were studied by the electron microscopic analysis method. Results and discussion. It is established that the diphenylamine solution in furfural, provided that it is solidified by sulfuric acid, benzolsulfoacid or mixture of these acids, is a polymer binder capable to form a high-strength material under normal hardening conditions by acid-resistant aggregates. It is also determined that to prepare resin, the ratio of furfural and diphenylamine should be within 1:0.5-0.3 by weight. The resin containing 1 weight part (w.p.) of furfural and 0.5 weight part of diphenylamine is conventionally named FD-1; containing 1 weight part of furfural and 0.4 weight part of diphenylamine -FD-2 and resin with 0.3 weight part of diphenylamine -FD-3. Conclusion. The introduction of nanostructured microfiller into the polymer concrete composition could save expensive resin. Comparison of the technologies for producing FD resin and polymer concrete, as well as preliminary test data of the studied materials, can determine the possible technical and economic advantages of polymer concrete based on FD resin over the polymer concrete based on FA (furfurolacetone) monomer which is currently used in construction of hydro-engineering structures. Polymer concrete based on FD resin has high strength and exceeds the strength of polymer concrete based on FA monomer by 20-25%.

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Section: Resultsmentioning

confidence: 99%

mentioning

confidence: 99%

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Polymer concrete production technology with improved characteristics based on furfural for use in hydraulic engineering construction

Moldamuratov¹,

Imambayeva²,

Imambaev³

et al. 2022

Nanobuild

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“…Обращает на себя внимание довольно высокая эффективность смесей производных мочевины с симм-триазинами, вполне сравнимая с результатами применения препарата тордон-101, выделенного ранее в число наиболее эффективных гербицидов. Объясняется это, по-видимому, значительно более слабым передвижением диурона и симм-триазинов по профилю почвы в сравнении с тордоном-101, что обусловило сохранение их значительных гербицидных концентраций в ограниченном слое почвогрунтов в течение длительного периода времени [12][13][14][15].…”

Section: результаты и обсужденияunclassified

Full-Scale Inspection of the Technical Condition of Lined Inter-Farm Canals

Moldamuratov¹,

Kultayeva²,

Iglikov³

et al. 2023

Bull. of Kaz. Lead. Ac. of Archit. and Const.

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The article discusses the issues of natural examination of the technical condition of facings of inter-farm canals, which are an important element of the irrigation and drainage systems in agriculture. The purpose of the study is to develop a methodology for natural examination of the technical condition of facings, based on the use of modern methods of surveys. The study presents the results of natural examination of the facings of inter-farm canals in the agricultural areas of the region. The study shows that the facings of inter-farm canals are subject to various types of defects, including erosion, landslides, cracks, and deformation. The severity of these defects depends on the characteristics of the soil, the design of the facings, and the hydrological regime of the canals. The authors have developed a set of criteria for assessing the technical condition of facings, taking into account the characteristics of the geological structure of the soil, hydrological conditions, and other factors affecting the stability of the facings.

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Evaluation of the possibility to use powders of polymineral silica-containing sands as a hydrophobizing coating

Cited by 2 publications

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Polymer concrete production technology with improved characteristics based on furfural for use in hydraulic engineering construction

Polymer concrete production technology with improved characteristics based on furfural for use in hydraulic engineering construction

Full-Scale Inspection of the Technical Condition of Lined Inter-Farm Canals

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