Secondary use in road construction rubble obtained from crushed concrete

Romanenko, Igor'; Romanenko, Mariya; Petrovnina, I. N.; Pint, Eduard; Konstantin, Elichev

doi:10.15862/59tvn115

Cited by 3 publications

(4 citation statements)

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“…As for the water resistance of recycled rubble the experimental data are different. The author [13] indicates a sharp decrease in the strength of recycling rubble at water saturation. Our earlier studies [8] indicate a slight change in strength at water saturation.…”

Section: Componentsmentioning

confidence: 93%

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Grain size distribution of aggregates of crushed concrete

Fomina

Polyanskiy

2019

E3S Web Conf.

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The results of studies of recycling aggregates obtained by crushing concrete scrap are presented. The heterogeneity of the material received as a result of crushing concrete scrap, complicates the task of selecting the fractional composition of aggregates. The presence of the mortar component in recycled aggregates significantly increases their water demand. This indicates the expediency of their use in a mixture with natural ones. This work aimed at optimizing the granulometry of recycling rubble and sand. Concrete scrap was used for the research. It was represented by destroyed samples of heavy concrete cubes. Standard methods for determining the grain composition and properties of aggregates of concrete, manufacturing and testing mortar mixes were used. It has been shown that recycling rubble of the 5-20 mm fraction has a minimum voidness when it contains 35% of the 5-10 mm grains and 65% of the 10-20 mm grains, which is close to the ratio of these fractions in the initial crushing product. Therefore, it is advisable to use recycling rubble fractions of 5-20 mm without separation into fractions. The rather high content in the recycling sand of grains with a particle size of more than 0.63 mm indicates the feasibility of using it in a mixture with natural fine and very fine sand. A grain-optimized mixture of natural very fine sand (46% of the total mass of mixed sand) and coarse fractions (0.63–5 mm) of recycled sand (54%) is proposed. Should be considered that recycled sand has increased water demand.

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Section: Componentsmentioning

confidence: 93%

“…The surface roughness and increased surface porosity cause higher water absorption values of recycled rubble in comparison with natural, according to most researchers. However, there is also different information [13].…”

Section: Componentsmentioning

confidence: 99%

Grain size distribution of aggregates of crushed concrete

Fomina

Polyanskiy

2019

E3S Web Conf.

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“…Solid metallurgical waste products, such as blast furnace slag, are economically and commercially efficient in production of construction materials, e.g. concrete, slag blocks, and building of automobile roads [19][20]. As a consequence, a negative impact of this waste on the environment is reduced.…”

Section: Methodsmentioning

confidence: 99%

Metallurgical Waste in Construction Industry

Berseneva

Vasilovskaya

Klindukh

et al. 2020

KEM

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The paper discusses a negative effect of metallurgical waste on the ecosystem, costs and benefits of a potential use of solid metallurgical waste products in production of building materials with the purpose to reduce their harmful effect on the environment and preserve nonrenewable natural resources. The most usable products a component of which is metallurgical waste, such as slag concrete and blocks, as well as break stone are compared with products made of natural raw materials. The most appropriate application fields with the minimal harm to human health and nature are recommended.

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“…Steelmaking slags are an alternative mineral resource for various sectors of the national economy. In particular, technological solutions have been developed and applied related to the use of slags as an additive in concrete, heat-insulating materials, in the production of slag binders, in road construction, as sorbents in wastewater treatment [1][2][3][4][5][6]. Unfortunately, the developed technologies for processing a huge amount of accumulated slags are not enough; therefore, new methods of utilization of technogenic raw materials are required.…”

Section: Introductionmentioning

confidence: 99%

Techno-Genic Fillers in the Composition of Modern Polymer Paints

Svyatchenko

Kiryushina

Sharapov

2020

SSP

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The article shows that techno-genic fillers, based on slag of electrometallurgical production, can be used as fillers for water-dispersion paints, based on polymer composition. For these purposes, it is necessary to modify the slag particles, in order to increase its hydrophobic property. The article examines the effect of the mass of the additive of techno-genic filler, based on the modified slag of the electrometallurgical plant, on the properties of the resulting paint. A water-dispersed acrylic composition, containing stearic acid-modified slag of electric steelmaking production as a filler, has been developed. The composition has high uniformity, is more heat-resistant and water-resistant, a high hiding power and viscosity, and corresponds to modern analogues.

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Secondary use in road construction rubble obtained from crushed concrete

Cited by 3 publications

References 0 publications

Grain size distribution of aggregates of crushed concrete

Grain size distribution of aggregates of crushed concrete

Metallurgical Waste in Construction Industry

Techno-Genic Fillers in the Composition of Modern Polymer Paints

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