Factors affecting the deterioration of concrete pavement slabs

Морозов, Н М; Красиникова, Н М; Borovskikh, I. N.

doi:10.5862/mce.59.3

Cited by 4 publications

(1 citation statement)

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“…This is due to more difficult operating conditions of road concrete [4]. The synergistic impact of dynamic loads and atmospheric factors on pavement, especially in the presence of anti-icing solutions on it, contributes to intensification of destructive processes in concrete [5][6][7]. In this case, the most important parameter for preserving the operational properties of concrete will be the indicator of its frost resistance level [8,9].…”

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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Introducing pozzolanic admixture to improve frost resistance of pavement concrete

Kramar

Kydyakov

Shuldyakov

2018

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

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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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Factors affecting the deterioration of concrete pavement slabs

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

Introducing pozzolanic admixture to improve frost resistance of pavement concrete

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

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