The Modified Composite Binder For Cement-Concrete Road Surfaces

Kosukhin, Mikhail; Kosukhin, Andrey

doi:10.1088/1757-899x/463/4/042036

Cited by 4 publications

(1 citation statement)

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“…In general, higher requirements are imposed on concretes for road and airfield pavements and base courses compared to concretes for hydraulic engineering or general construction [1][2][3]. This is due to more difficult operating conditions of road concrete [4].…”

Section: Introductionmentioning

confidence: 99%

Influence of the porosity structure of road concrete on its durability

et al. 2021

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Cement-concrete pavements of roads and airfields are the most durable type of pavement. The design service life of cement-concrete pavements is 40-50 years, in Russia this period is 20-25 years, and for asphalt-concrete pavements is 10-15 years. The real, actual overhaul period of asphalt concrete pavements, is much lower than the design one (according to the Federal Road Agency of Russia «Rosavtodor», on average, 3-5 years or even less), therefore, work aimed at increasing the durability of cementconcrete pavements is of particular relevance. The main technical parameters of road concrete that characterize its durability are compressive strength, flexural tensile strength, water absorption and others. The most important parameter is the frost resistance of concrete, which is primarily influenced by the structure of the pore space. This paper shows the way of obtaining concretes based on aggregates, the frost resistance of which is lower than the frost resistance of the resulting concrete.

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Section: Introductionmentioning

confidence: 99%

Influence of the porosity structure of road concrete on its durability

et al. 2021

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Cement concrete modified by fine-dispersed anionactive bitumen emulsion for road construction

Garipov

Makarov

Khozin

et al. 2020

IOP Conf. Ser.: Mater. Sci. Eng.

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Cement concretes are strong and able to resist external adverse environmental factors, have an increased water absorption and, as a result, insufficient frost resistance and deformability. Therefore, wide use of cement concrete in road construction is limited. Modification of road cement concrete with anionactive bitumen emulsions is a current and promising solution. By introducing small concentrations of bitumen emulsions into cement concrete, one gets a material with the basic properties of cement concrete and the properties of asphalt concrete. Rigid crystallization bonds formed as a result of cement hydration are dominantly present in cement systems, while coagulation type bonds with adhesive properties bitumen prevail in asphalt systems. Depending on the quantitative relationship between these bonds, the deformability of concrete tends to change. The main technological and operational properties of the resulting road cement concrete were investigated. Cement concrete was bituminized by introducing the anionic bitumen emulsions into the concrete mixture (from 0.5% to 8.0% of cement weight), which allowed increasing technological properties of concrete mixture and the performance properties of hardened concrete. This increases mobility, improves deformability of hardened concrete, increases its abrasion resistance, water resistance, frost resistance, reduces shrinkage without reducing the strength properties of road concrete.

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Modelling of a Three-Dispersed Suspension Filtration

Safina¹

2023

IJCCSE

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The injection method of soil stabilization is one of the methods to improve the soil base during the road construction. This method consists in the introduction of special compounds into the ground with the help of special equipment. Such compositions, as a rule, are solutions of polymers or cement, which harden, forming a solid base. The advantages of the injection method of soil stabilization for roads include rapid completion of work, minimal environmental impact, the possibility of application in difficult geological conditions, as well as strengthening the soil base at great depth. Injection solutions penetrate into microcracks and micropores of soils, forming a deposition. The study of liquid filtration in a porous soil system is of great practical importance. The paper considers the filtration of liquid in a porous medium with three types of particles. In the considered problem, each of the three types of suspension particles is characterized by its linear filtration function. It determines the size-exclusion particle capture mechanism, in which particles whose diameter exceeds the size of the pores get stuck in them, the rest pass through them unhindered. Numerical solutions are obtained for the concentrations of suspended particles of three types, as well as the total deposition. Depending on the initial parameters of the problem, the concentrations of suspended particles are either monotonic functions or non-monotonic, reaching the maximum value. In this paper, asymptotic solutions are constructed for the concentrations of suspended and retained particles near the concentration front, which are compared with numerical ones. The solution is obtained at infinity using a traveling wave.

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The Modified Composite Binder For Cement-Concrete Road Surfaces

Cited by 4 publications

References 0 publications

Influence of the porosity structure of road concrete on its durability

Influence of the porosity structure of road concrete on its durability

Cement concrete modified by fine-dispersed anionactive bitumen emulsion for road construction

Modelling of a Three-Dispersed Suspension Filtration

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