Rheological properties of asphalt binders modified with styrene-butadiene-styrene (SBS), ground tire rubber (GTR), or polyphosphoric acid (PPA)

被引：204

作者：

Behnood, Ali ^{[1
]}

Olek, Jan ^{[1
]}

机构：

[1] Purdue Univ, Lyles Sch Civil Engn, 550 Stadium Mall, W Lafayette, IN 47907 USA

来源：

CONSTRUCTION AND BUILDING MATERIALS | 2017年 / 151卷

关键词：

Rutting; Multiple stress creep recovery; Modifiers; Styrene-butadiene-styrene; Ground tire rubber; Polyphosphoric acid; STRESS CREEP RECOVERY; CRUMB-RUBBER; DENSITY POLYETHYLENE; RUTTING PERFORMANCE; MODIFIED BITUMEN; MIX ASPHALT; FATIGUE; SUSCEPTIBILITY; TEMPERATURE; MOISTURE;

D O I：

10.1016/j.conbuildmat.2017.06.115

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

In this study, the rheological properties of modified binders have been investigated. For this purpose, varying amounts of styrene-butadiene-styrene (SBS), ground tire rubber (GTR) or polyphosphoric acid (PPA) modifiers were added to a neat binder. The dynamic shear rheometer (DSR) was used to grade the original, RTFO-aged and PAV-aged binders based on the conventional performance grading (PG) and the multiple stress creep recovery (MSCR) systems. The bending beam rheometer (BBR) was used to study the low-temperature properties of the asphalt binders. All of the modifiers were found to improve the high temperature properties of the neat asphalt. With regard to the intermediate temperatures, SBS and PPA did not significantly affect the performance of the binder. However, GTR significantly decreased the stiffness of the binder. In addition, these modifiers were not found to have significant effects on the low temperature continuous grade of the binders. The MSCR protocol was successfully used to grade all the binders; however, the "percent difference" criterion of the MSCR protocol seems to be not applicable with regard to some binders and conditions. (C) 2017 Elsevier Ltd. All rights reserved.

引用

页码：464 / 478

页数：15

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