The impact of carbon nano-fiber modification on asphalt binder rheology

被引：190

作者：

Khattak, Mohammad Jamal ^{[1
]}

Khattab, Ahmed ^{[2
]}

Rizvi, Hashim R. ^{[1
]}

Zhang, Pengfei ^{[3
]}

机构：

[1] Univ SW Louisiana, Dept Civil Engn, Lafayette, LA 70504 USA

[2] Univ SW Louisiana, Dept Ind Technol, Coll Engn, Lafayette, LA 70504 USA

[3] Univ SW Louisiana, Dept Mech Engn, Lafayette, LA 70504 USA

来源：

CONSTRUCTION AND BUILDING MATERIALS | 2012年 / 30卷

关键词：

Asphalt binder; Viscoelastic; Carbon nanofiber; Fatigue life; Master curve; NANOCOMPOSITES;

D O I：

10.1016/j.conbuildmat.2011.12.022

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

Nano-reinforced materials hold the potential to redefine the field of transportation materials both in terms of cost effectiveness and long term pavement performance. This study focuses on the exploratory analysis of the mixing procedure of carbon nanofibers (CNFs) with asphalt cement (AC) and discusses the visco-elastic and fatigue characteristics of neat and CNF-modified AC binders. Three types of AC were modified with varying percentages of CNF. Two CNF-asphalt mixing procedures, dry process and wet process, were investigated. The dynamic shear rheometer was utilized to determine complex shear modulus (G*), phase angle (delta), and fatigue characteristics of neat and CNF-modified AC for a range of temperatures and loading frequencies. The G*/sin delta values and rotational viscosity analyses revealed that the CNF-modified AC exhibited improved visco-elastic response and resistance to rutting. Furthermore, substantial increases in fatigue life were observed with CNF modification. (C) 2011 Elsevier Ltd. All rights reserved.

引用

页码：257 / 264

页数：8

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