Characterization of the rutting potential of modified asphalt binders and its correlation with the mixture's rut resistance

被引:37
作者
Inocente Domingos, Matheus David [1 ]
Faxina, Adalberto Leandro [1 ]
Bariani Bernucci, Liedi Legi [2 ]
机构
[1] Univ Sao Paulo, Sao Carlos Sch Engn, Dept Transportat Engn, Ave Trabalhador Sao Carlense 400, BR-13566590 Sao Carlos, SP, Brazil
[2] Univ Sao Paulo, Dept Transportat Engn, Polytech Sch, Ave Prof Almeida Prado,Travessa 2,83 Cidade Univ, BR-05508070 Sao Paulo, SP, Brazil
基金
巴西圣保罗研究基金会;
关键词
Asphalt binders; Performance grade; Rutting; Flow number; Nonrecoverable compliance; Polymers; Polyphosphoric acid; FLOW NUMBER;
D O I
10.1016/j.conbuildmat.2017.03.171
中图分类号
TU [建筑科学];
学科分类号
0813 ;
摘要
This study was intended to evaluate the susceptibility of asphalt binders and mixtures to rutting. The binders have the same high PG grade (PG 76-xx) and a dense-graded gradation curve was used to produce the mixtures. Three types of polymers - Elvaloy (R), SBS and SBR - and polyphosphoric acid (PPA) were selected. The tests included softening point, oscillatory shear (parameter G*/sin delta), multiple stress creep and recovery (J(nr)) and flow number (F-N). The rankings of binder and mixture parameters (J(nr), G/sin delta, sof-tening point and F-N) are the same only for J(nr), and F-N, and the applicability of G*/sin delta to modified materials is questionable. (C) 2017 Elsevier Ltd. All rights reserved.
引用
收藏
页码:207 / 213
页数:7
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