Research of the efficiency of the use of belite sludge for the device of monolithic layers of road clothes by the method of cold recycling

Лыткин, А. А.; Старков, Г. Б.; Вагнер, Е. Я.

doi:10.26518/2071-7296-2020-17-6-764-776

Cited by 7 publications

(1 citation statement)

References 2 publications

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“…The most affordable technological solution to the problem lies in the creation of a rigid pavement structure by providing a strong foundation of reinforced and stabilized soils and stone materials using innovative additives of complex action [1][2][3][4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Reducing the environmental burden during the reconstruction of highways by extending their life cycle

Trautvain,

Yadykina

2024

BIO Web Conf.

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The article presents the results of studies on assessing the effectiveness of using stabilizing additives of complex action (Chimston) to increase the bearing capacity of structural layers of the base of road pavements of the Far North highways due to its use in strengthening various types of non-cohesive soils in combination with an inorganic binder. It was found that the application of Chimston is unconditionally required, as the additive in the system allows one to obtain a material that meets the regulatory requirements for frost resistance and to ensure the reliable operation of the road structure in the conditions of the Far North. The maximum efficiency in terms of physical and mechanical characteristics with Chimston in the system was demonstrated by compositions based on crushed sand stabilized with 7 % cement, and for crushed stone-sand mixes of types C-7 and C-6 with 9 % cement. Based on the analysis of the obtained results, it can be assumed that the stabilizing additive Chimston, adsorbing on the surface of particles of sandy and coarse-grained soil, interacts with the inorganic binder of the composite. It affects the mechanism of its hydraulic activity in the process of gaining brand strength, which was most confirmed in the study of strength characteristics of samples based on coarse-grained soils. Thus, with an increase in the amount of binder in the presence of the Chimston additive, a higher increase in the compressive strength of the samples is observed. An increase in the amount of binder when adding an additive to the composition of samples based on coarse-grained soils contributes to the maximum gain in compressive strength of samples containing 9% cement. The obtained results allow for the conclusion that the technology of using the polymer stabilizer Chimston in the construction of structural layers of the base of road clothes based on loose soils can provide the required transport and operational condition of road structures with a life cycle of 24 years. It will also significantly reduce the volume of industrial waste used as pavement, as well as reduce the consumption of unsustainable Portland cement.

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Section: Introductionmentioning

confidence: 99%

Reducing the environmental burden during the reconstruction of highways by extending their life cycle

Trautvain,

Yadykina

2024

BIO Web Conf.

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Investigation of the influence of negative temperatures on the technological properties of belite sludge

Лыткин

2023

E3S Web of Conf.

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The paper describes the characteristics of belite sludge - a large-tonnage waste of alumina production. The influence of negative temperatures on the technological properties of the sludge was investigated. The regularities of sludge cooling during its excavation, long-term storage and in the technological process of structural layers’ construction in winter conditions have been studied. Recommendations have been developed for the construction of foundations (coatings) from sludge and sludge-mineral materials at temperatures below minus 20°C. The implementation of research results helps to prolong the construction season, reduce material consumption and increase durability during construction, reconstruction and repair of transport infrastructure objects.

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Influence of soil moisture on the deformation properties of soil-crushed stone samples during compression

et al. 2021

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Introduction. The purpose of the article is to determine the dependence of the influence of soil moisture and the content of crushed stone in a soil-crushed stone sample on the secant modulus of deformation under uniaxial compression. The need for such a mathematical model is necessary in order to introduce correction factors to the values of the stamped deformation moduli of the gravel layer calculated from test data delivered at other soil moisture conditions, e.g. for flume or road tests during a non-calculated period of the year.Materials and methods. Cylindrical samples with a height of 20 cm and a diameter of 10 cm were made to perform tests using a large standard sealing device. The content of crushed stone of a mixture of fractions of 5-10 and 10-20 mm varied in the samples. The methods of saturation of samples with water and their testing by uniaxial compression are given. The rules for processing the experimental results are described, which include: correction of the initial part of the graphical dependence of deformation from pressure and statistical processing of the results. The analysis of methods for calculating the deformation modulus, which are classified into three types, is performed: secant module, tangent module and piecewise linear module. Based on this analysis, a method for calculating the deformation modulus of a soil-crushed stone sample under uniaxial compression is justified.Results. The results of experimental determination of the deformation characteristics of soil-crushed stone samples under uniaxial compression are presented. A mathematical model of the dependence of the deformation modulus of a soil-crushed stone sample from the soil moisture and the content of crushed stone used in the soil-crushed stone mixture is obtained.Discussion and conclusions. Recommendations are given on the application of the research results for the development of an album of standard constructions of road pavement of the lowest type in the districts of the Omsk region.

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Research of the efficiency of the use of belite sludge for the device of monolithic layers of road clothes by the method of cold recycling

Cited by 7 publications

References 2 publications

Reducing the environmental burden during the reconstruction of highways by extending their life cycle

Reducing the environmental burden during the reconstruction of highways by extending their life cycle

Investigation of the influence of negative temperatures on the technological properties of belite sludge

Influence of soil moisture on the deformation properties of soil-crushed stone samples during compression

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