Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Analytical modelling of complex stiffness modulus tests in direct tension-compression on asphalt concrete and nonlinearity effect due to strain amplitude
A new analytical model is designed to reproduce the complex modulus of asphalt concrete in cyclic dynamic tests. Instead of multiplying rheological elements with fixed parameters, only two elements with variable parameters are connected in parallel: the stiffness component related to the strain and the viscosity component related to the strain rate. They compose the VENoL (NOnLinear ViscoElastic) model. Their variations as a function of pulsation are calibrated with the Carreau–Yasuda model at a reference temperature and strain amplitude. The conversion from one temperature to another is done using the Time-Temperature Superposition Principle defined by its shift factor . For the conversion from one strain amplitude to another (nonlinearity), the Time-Amplitude Semi-Superposition Principle is newly created, defined by two shift factors and . The model is calibrated with experimental data from the literature based on direct tension-compression tests. The results obtained corroborate the experiments accurately.
Analytical modelling of complex stiffness modulus tests in direct tension-compression on asphalt concrete and nonlinearity effect due to strain amplitude
A new analytical model is designed to reproduce the complex modulus of asphalt concrete in cyclic dynamic tests. Instead of multiplying rheological elements with fixed parameters, only two elements with variable parameters are connected in parallel: the stiffness component related to the strain and the viscosity component related to the strain rate. They compose the VENoL (NOnLinear ViscoElastic) model. Their variations as a function of pulsation are calibrated with the Carreau–Yasuda model at a reference temperature and strain amplitude. The conversion from one temperature to another is done using the Time-Temperature Superposition Principle defined by its shift factor . For the conversion from one strain amplitude to another (nonlinearity), the Time-Amplitude Semi-Superposition Principle is newly created, defined by two shift factors and . The model is calibrated with experimental data from the literature based on direct tension-compression tests. The results obtained corroborate the experiments accurately.
Analytical modelling of complex stiffness modulus tests in direct tension-compression on asphalt concrete and nonlinearity effect due to strain amplitude
Coulon, L. (Autor:in) / Koval, G. (Autor:in) / Chazallon, C. (Autor:in) / Roux, J.-N. (Autor:in)
Road Materials and Pavement Design ; 24 ; 216-246
02.01.2023
31 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Unbekannt
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Viscoelastic Tension-Compression Nonlinearity in Asphalt Concrete
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Dynamic Modulus of Asphalt Concrete in Uniaxial Compression and Indirect Tension Modes
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