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Steady-State Creep of Asphalt Concrete

Department of Mechanics, Al-Farabi Kazakh National University, Almaty 050040, Kazakhstan
Kazakhstan Highway Research Institute, Almaty 050061, Kazakhstan
Department of Chemistry and Chemical Technologies, University of Calabria, Rende 87036, Italy
Author to whom correspondence should be addressed.
Academic Editors: Zhanping You, Qingli (Barbara) Dai and Feipeng Xiao
Appl. Sci. 2017, 7(2), 142;
Received: 11 November 2016 / Revised: 21 January 2017 / Accepted: 25 January 2017 / Published: 4 February 2017
(This article belongs to the Special Issue Advanced Asphalt Materials and Paving Technologies)
This paper reports the experimental investigation of the steady-state creep process for fine-grained asphalt concrete at a temperature of 20 ± 2 °С and under stress from 0.055 to 0.311 MPa under direct tension and was found to occur at a constant rate. The experimental results also determined the start, the end point, and the duration of the steady-state creep process. The dependence of these factors, in addition to the steady-state creep rate and viscosity of the asphalt concrete on stress is satisfactorily described by a power function. Furthermore, it showed that stress has a great impact on the specific characteristics of asphalt concrete: stress variation by one order causes their variation by 3–4.5 orders. The described relations are formulated for the steady-state of asphalt concrete in a complex stressed condition. The dependence is determined between stress intensity and strain rate intensity. View Full-Text
Keywords: asphalt concrete; creep curve; steady-state creep; strain rate; viscosity; stress intensity; strain intensity asphalt concrete; creep curve; steady-state creep; strain rate; viscosity; stress intensity; strain intensity
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MDPI and ACS Style

Iskakbayev, A.; Teltayev, B.; Oliviero Rossi, C. Steady-State Creep of Asphalt Concrete. Appl. Sci. 2017, 7, 142.

AMA Style

Iskakbayev A, Teltayev B, Oliviero Rossi C. Steady-State Creep of Asphalt Concrete. Applied Sciences. 2017; 7(2):142.

Chicago/Turabian Style

Iskakbayev, Alibai, Bagdat Teltayev, and Cesare Oliviero Rossi. 2017. "Steady-State Creep of Asphalt Concrete" Applied Sciences 7, no. 2: 142.

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