The Preparation of Composite Solutions with the Addition of Ash from Burning of Used Sleepers

Ustinova, Marina; Zubrev, N.I.; Panfilova, Marina; Novoselova, Olga; Efremova, S.Yu.; Журавлева, М. А.

doi:10.18412/1816-0395-2018-5-36-40

Cited by 7 publications

(4 citation statements)

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“…Frost resistance of the modified composite solution corresponds to the brand F100. This proves that the addition of nanoadditives to cement leads to more intensive hydration of cement, increasing the density of cement stone [20][21].…”

Section: Discussionmentioning

confidence: 91%

Composite grouting mortar based on 3D-NKM - nanocrystalline inoculant

et al. 2018

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For the waterproofing of tunnels and the uniform distribution of space between the lining of tunnels and rock, composite injection solutions are used. To improve the physical and mechanical properties of cement composites, the nanoconstruction effect is used, which is possible when using nanoparticles with extended geometry. Nano-additives and nanomodifiers consisting of nanoparticles, both natural and artificial and technogenic, can be used for the production of cement-containing solutions and concretes. For example, under certain conditions nanocrystalline powder of oxides and hydroxides of aluminum to nanotechnogenic raw materials can be referred to wastes of technogenic origin. The paper investigated the effect of nano-additives-boehmite, which is a waste of production, to increase the strength and frost resistance of plugging materials made on the basis of cement when administered. It is established that the use of boehmite as an additive in cements leads to an increase in the strength properties of concrete and increase its frost resistance, which is a prerequisite for long-term and reliable operation of the composite solution. Thus, the composite solution modified by boehmite is the basis for the creation of plugging solutions

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Section: Discussionmentioning

confidence: 91%

Composite grouting mortar based on 3D-NKM - nanocrystalline inoculant

et al. 2018

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“…The main direction of environmental policy is the involvement of production waste in the economic turnover [14][15][16][17][18][19][20][21][22]. There are a number of reasonable directions for the use of production waste -sulfur -in various technologies [23][24][25][26][27].…”

Section: Introductionmentioning

confidence: 99%

Sulfur-Modified Composites for Enhancement of Building Foundations

Efremova¹,

Panfilova²,

Zubrev³

et al. 2021

E3S Web Conf.

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This paper considers the issues of improving the strength characteristics of foundations by injecting specially selected composite mortars into soils. The properties of injection mortars used in seismic hazardous areas are improved using various additives consisting of various wastes. The article explores the possibility of using a composite mortar modified with sulfur, which is waste from oil refining. The influence of its addition on the strength characteristics of composite materials is studied. The optimal content of sulfur addition was determined, which makes it possible to increase the strength of building mixtures by 20-30%. The possibility to use a sulfur- modified composite mortar to strengthen an artificial foundation for reducing the seismicity of the construction site was proven.

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“…Prevention of water access in them can be achieved by injecting liquid glass, cement clay or bitumen into cracks and voids, since the traditional mixtures used to eliminate underground voids are of insignificant strength. Therefore, mixtures with reinforcing element are used as grouting mortar [1][2][3].…”

Section: Introductionmentioning

confidence: 99%

Kinetics of structure formation of a composite mortar with nano-additives based on aluminium

et al. 2020

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This paper discusses the possibility of using aluminum-containing nano-additives as structure modifiers of composite mortar in order to ensure safety and durability of rubble foundation. Higher injection efficiency can be achieved by integrating the composite mortar into the foundation body. The temporal evolution of structure formation in composite mortar with various contents of boehmite and aluminosilicate nanotubes (ANT) was studied. The optimal concentrations of additives were determined at which the rate of structure formation reaches its maximum. It was revealed that ANT additives accelerate the hardening time of the composite mortar by 1.3 times in comparison with boehmite additives. The greatest impact on accelerating the structure formation in the initial period is achieved by adding 0.125% aluminosilicate tubes to the mass of cement. It was found that in this case, the duration of flowability loss of the composite mortar is reduced by a factor of three compared with that of the control sample.

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The Preparation of Composite Solutions with the Addition of Ash from Burning of Used Sleepers

Cited by 7 publications

References 0 publications

Composite grouting mortar based on 3D-NKM - nanocrystalline inoculant

Composite grouting mortar based on 3D-NKM - nanocrystalline inoculant

Sulfur-Modified Composites for Enhancement of Building Foundations

Kinetics of structure formation of a composite mortar with nano-additives based on aluminium

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