Low temperature rheology of polyphosphoric acid (PPA) added bitumen

被引：94

作者：

Baldino, Noemi ^{[1
]}

Gabriele, Domenico ^{[1
]}

Rossi, Cesare Oliviero ^{[2
]}

Seta, Lucia ^{[1
]}

Lupi, Francesca R. ^{[1
]}

Caputo, Paolino ^{[3
]}

机构：

[1] Univ Calabria, Dept Engn Modelling, I-87036 Arcavacata Di Rende, CS, Italy

[2] Univ Calabria, Dept Chem, I-87036 Arcavacata Di Rende, CS, Italy

[3] Star Asphalt SPA Res Lab, I-87010 Saracena, CS, Italy

来源：

CONSTRUCTION AND BUILDING MATERIALS | 2012年 / 36卷

关键词：

Dynamic Mechanical Analysis (DMA); Bitumen; Rheology; Polyphosphoric acid; ASPHALT; PERFORMANCE; MECHANISMS; WAX;

D O I：

10.1016/j.conbuildmat.2012.06.011

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

In the present work a laboratory evaluation of the low-temperature rheological properties of neat and polyphosphoric acid (PPA) modified bitumens by using a Dynamic Mechanical Analyzer (DMA) is presented. Fundamental theological properties were evaluated in controlled kinematic conditions and the results obtained were compared with traditional procedures such as the Fraass breaking point. The results show that the effect of polyphosphoric acid addition at low temperature is strongly dependent on bitumen composition (i.e. wax and asphaltene content), nevertheless it seems that PPA is able to decrease the glass transition temperature (T-g) and to increase the stiffness, improving the low temperature performance of the modified materials. (C) 2012 Elsevier Ltd. All rights reserved.

引用

页码：592 / 596

页数：5

共 13 条

[1]

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[2]

Baumgardner GL, 2005, J ASSOC ASPHALT PAV, V74, P283

[3]

Duncan J., 2008, Principles and Applications of Thermal Analysis, P119

[4] Rheological effects of commercial waxes and polyphosphoric acid in bitumen 160/220 - low temperature performance [J].