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Moisture Resistance of Sulfur-Extended Asphalt Concrete. Results of the Study and Features of Definition

Number of journal: 3-2021
Autors:

Le H.T.,
Gladkikh V.A.,
Korolev E.V.,
Grishina A.N.

DOI: https://doi.org/10.31659/0585-430X-2021-789-3-39-44
УДК: 691.168

 

AbstractAbout AuthorsReferences
The paper presents data on the kinetics of strength gain of sulfur-extended asphalt concrete, as well as its moisture resistance. It is shown that the achievement of the maximum strength of sulfur-extended asphalt concrete is completed on the 6-7th day. Moreover, the value of strength and the rate of its gain depend on the sulfur content: the maximum values and rate of strength gain are characteristic of sulfur-extended asphalt concrete containing 40% sulfur. It has been experimentally established that the replacement of technical sulfur bitumen by 20–40% leads to a decrease in the coefficient of moisture resistance of sulfur-extended asphalt concrete with prolonged water saturation. Kinetic and energy parameters of the process destruction of asphalt concrete and sulfur-extended asphalt concrete have been calculated. It is shown that the use of sulfur increases the sensitivity of the structure of sulfur-extended asphalt concrete to water. The main hypotheses of a decrease in the moisture resistance of sulfur-extended asphalt concrete are formulated: physicochemical hypothesis, chemical hypothesis and complex hypothesis.
H.T. LE1, graduate student (This email address is being protected from spambots. You need JavaScript enabled to view it.),
V.A. GLADKIKH1, Candidate of Sciences (Engineering) (This email address is being protected from spambots. You need JavaScript enabled to view it.);
E.V. KOROLEV2, Doctor of Sciences (Engineering) (This email address is being protected from spambots. You need JavaScript enabled to view it.);
A.N. GRISHINA1, Candidate of Sciences (Engineering) (This email address is being protected from spambots. You need JavaScript enabled to view it.)

1 National Research Moscow State University of Civil Engineering (26, Yaroslavskoe Highway, Moscow, 129337, Russian Federation)
2 Saint Petersburg State University of Architecture and Civil Engineering (4, Vtoraya Krasnoarmeiskaya Street, Saint Petersburg, 190005, Russian Federation)

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For citation: Le H.T., Gladkikh V.A., Korolev E.V., Grishina A.N. Moisture resistance of sulfur-extended asphalt concrete. Results of the study and features of definition. Stroitel’nye Materialy [Construction Materials]. 2021. No. 3, pp. 39–44. (In Russian). DOI: https://doi.org/10.31659/0585-430X-2021-789-3-39-44


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