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

Garipov, Aidar; Makarov, Dmitry; Khozin, V. G.; Stepanov, S. V.; Ayupov, Damir

doi:10.1088/1757-899x/890/1/012107

Cited by 3 publications

(2 citation statements)

References 20 publications

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“…More stringent requirements apply to pavement concretes used on roads, platforms, and/or airfields than those used in hydraulic or civil engineering [19][20][21]. Atmospheric factors caused by temperature fluctuations and the influence of traffic caused by dynamic loads, as well as the presence of chemical deicing agents, contribute to the demanding operating conditions of pavement concrete [21,22].…”

Section: Introductionmentioning

confidence: 99%

The Advantages on Using GGBS and ACBFS Aggregate to Obtain an Ecological Road Concrete

et al. 2023

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This work aims to show the advantages of using GGBS (Ground Granulated Blast Furnace Slag) and ACBFS aggregate (Air-Cooled Blast Furnace Slag) on the tensile strength and durability properties of infrastructure concrete at the reference age of 28 days. Three concrete mixes were prepared: the first one was a control sample; the second one had 15% GGBS (instead of Portland cement) and 25% ACBFS (instead of natural sand); and the third had 15% GGBS (instead of Portland cement) and 50% ACBFS (instead of natural sand). The studies on mortars focused on the ratio of compressive strength (CS) in correlation with the specific surface area (obtained by the Blain method). The microstructure of the prepared mortars was examined at the age of 28 days by X-ray diffraction, SEM electron microscopy with an energy-dispersive EDX spectrometer, and NMR nuclear magnetic resonance relaxometry. The results of the tests carried out afterwards on the concretes containing slag (15% GGBS and 25% or 50% ACBFS) showed values that met high-quality criteria for exfoliation (S56 < 0.1 kg/m2), carbonation, and gelling G100 (with a loss of resistance to compression η < 25%). The slag concretes showed a degree of gelation of G100 (with a loss of compressive strength below 25%), low volume losses below 18,000 mm3/5000 mm2 (corresponding to wear class 4, grade I), and moderate penetration of chlorine ions (according to the RCPT test). All of these allow the concrete with slag (GGBS/ACBFS) to be recommended as an ecological road concrete. Our study proved that a high-class road concrete of BcR 5.0 can be obtained, with tensile strengths of a minimum 5 MPa at 28 days (the higher road concrete class in Romania, according to national standards).

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Section: Introductionmentioning

confidence: 99%

The Advantages on Using GGBS and ACBFS Aggregate to Obtain an Ecological Road Concrete

et al. 2023

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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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Cationic asphalt emulsion as an additive of RCC Pavement: Exploring for Mode-I fracture behavior and dynamic modulus properties

Dareyni

Pourjafar

Moghaddam

2023

Engineering Fracture Mechanics

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

Cited by 3 publications

References 20 publications

The Advantages on Using GGBS and ACBFS Aggregate to Obtain an Ecological Road Concrete

The Advantages on Using GGBS and ACBFS Aggregate to Obtain an Ecological Road Concrete

Influence of the porosity structure of road concrete on its durability

Cationic asphalt emulsion as an additive of RCC Pavement: Exploring for Mode-I fracture behavior and dynamic modulus properties

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