Formation of structure of high-strength composites with account of interactions between liquid phase and disperse particles

Plugin, Andrii; Dedeneva, Elena; Kostyuk, Tatiana; Bondarenko, Dmitro; Demina, Olga

doi:10.1051/matecconf/201711601010

Cited by 14 publications

(6 citation statements)

References 2 publications

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“…As it can be seen from the grain composition of Table 1 and the test results of concrete mixtures, even a slight change in the composition of the fine fraction of less 0.01 mm can lead to significant changes in the technological properties of SCC. The results obtained are consistent with the data on the influence of grain composition of mineral additives and aggregates on the rheological properties of mixtures [36][37][38][39][40][41][42]. This can be used for the development of construction technologies [43][44][45][46][47][48].…”

Section: Research Results and Discussionsupporting

confidence: 85%

Technological Properties of Self-Compacting Concrete Mixtures with Ground Quartz Sand

Kazanskaya¹,

Fadeeva²,

Isakovsky³

2019

IJITEE

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Quantitative parameters of influence of grain composition of ground quartz sand and its quantity on the workability and segregation of self-compacting fresh concrete were determined at the constant amount of mixing water and water-cement ratio. Ground quartz sand in the amount of 50-150 kg/m3 was added instead of fine and coarse aggregates with changing the amount of polycarboxylate superplasticizer. It is stated that the use of ground quartz sand of finer grinding provides higher values of workability at the same quantity of water and superplasticizer. Segregation of the fresh concrete occurs when using increased amount of ground quartz sand of coarser grinding and increased amount of superplasticizer. Experimental studies have shown the effectiveness of the use of ground quartz sand to obtain self-compacting fresh concrete of different classes of workability SF1 and SF2 as well as classes of segregation resistance SR1 and SR2. The results of the experiments allow to state that the use of ground quartz sand of coarser grinding leads to segregation of fresh concrete at its low workability, while the use of ground quartz sand of finer grinding allows to obtain fresh concrete with resistance to segregation.

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Section: Research Results and Discussionsupporting

confidence: 85%

Technological Properties of Self-Compacting Concrete Mixtures with Ground Quartz Sand

Kazanskaya¹,

Fadeeva²,

Isakovsky³

2019

IJITEE

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“…Silica gel in aqueous suspension with superplasticizer has fine particles smaller than 10 microns. [32][33][34][35]. The use of superplasticizers allows regulating the technological properties of aqueous suspensions: conditional viscosity, sedimentation and penetration.…”

Section: Micro-cement For Injection Consolidation Of Base Soilsmentioning

confidence: 99%

Micro-Cement for Injection Consolidation of Base Soils

Smirnova*,

Glazev,

Komolov

et al. 2019

IJITEE

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Issues of development of compositions of injectable materials on inorganic basis for underground and transport construction are considered in the paper. Inorganic binders for aqueous suspensions for strengthening of low-strength sandy and debris soils by injection into the fortified massif are proposed. The use of silica gel in combination with hydrated lime for injectable aqueous suspensions is justified. The influence of superplasticizer on the technological properties of suspensions is shown. The properties of micro-cement of different compositions are presented. Optimal ratios of components were determined. The following properties of aqueous suspensions have been studied: viscosity, sedimentation and penetrating power. The viscosity was up to 40 s, sedimentation up to 1.4%. Soil-concrete obtained by injecting the aqueous suspension based on composite binders has the compressive strength in the range of 3.3-6.2MPa.

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“…Use of repair mortars is currently a readily available and common method for restoring various construction products and structures (Plugin et al, 2017;Upadhyaya et al, 2019;Torney et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

Optimization of repair mortar used in masonry restoration

Kharitonov

Smirnova

2019

Spatium

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Deterioration of ancient masonry is a contemporary problem. The initial properties of the masonry material that determine its durability, deterioration and degree of preservation have led to the appearance of different approaches towards choosing the technology for restoring masonry. The success of any restoration is largely determined by its compatibility with the original materials used, which requires, as a rule, a complex and long process of selecting their composition. One of the main technological approaches in the science of restoration materials is to search for the optimal composition of the material within a given time limit. This paper presents an approach which uses a large number of variables within strict boundary conditions. The solution to this problem can be found in the field of mathematical modelling using experiment planning methods. The paper presents a method developed for mortar optimization which makes it possible to obtain the desired result within a relatively short period of time.

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Formation of structure of high-strength composites with account of interactions between liquid phase and disperse particles

Cited by 14 publications

References 2 publications

Technological Properties of Self-Compacting Concrete Mixtures with Ground Quartz Sand

Technological Properties of Self-Compacting Concrete Mixtures with Ground Quartz Sand

Micro-Cement for Injection Consolidation of Base Soils

Optimization of repair mortar used in masonry restoration

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