Fractional Viscoelastic Modeling of Antirutting Response of Bituminous Binders

被引：12
|
作者：
Baglieri, Orazio [1 ]
Santagata, Ezio [1 ]
Sapora, Alberto [2 ]
Cornetti, Pietro [2 ]
Carpinteri, Alberto [2 ]
机构：
[1] Politecnico Torino, Dept Environm Land & Infrastruct Engn, Corso Duca Abruzzi 24, I-10129 Turin, Italy
[2] Politecn Torino, Dept Struct Geotech & Bldg Engn, Corso Duca Abruzzi 24, I-10129 Turin, Italy
来源：
JOURNAL OF ENGINEERING MECHANICS | 2017年 / 143卷 / 05期
关键词：
Asphalt pavements; Fractional model; Polymer-modified binders; Rutting; Creep-recovery tests; ORDER RATE APPROACH; HEREDITARY MATERIALS; ASPHALT BINDERS; CREEP; BITUMEN; RELAXATION; VISCOSITY; CALCULUS; MIXTURES; CONCRETE;
D O I：
10.1061/(ASCE)EM.1943-7889.0001081
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
A three-parameter fractional model, composed by a springpot in series with a dapshpot, was employed to describe the rheological behaviour of a set of polymer-modified bituminous binders obtained by combining a single-base bitumen with different types of syrene-butadiene-styrene copolymers at different concentrations. Experimental strain-time curves gathered from creep-recovery shear tests carried out by means of a dynamic shear rheometer at various temperatures were found to be in good agreement with model predictions. The fractional approach leads to a synthetic yet exhaustive description of the viscoelastic behavior of all materials. Variation of model parameters, each of which with a precise physical meaning, appears to be coherent with different binder compositions and testing conditions, reflecting the variations in terms of polymer concentration and temperature. (C) 2016 American Society of Civil Engineers.
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页数：8
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