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Title:

Laboratory Performance Evaluation of High-Modulus Asphalt Mixtures for Perpetual Asphalt Pavements

Accession Number:

01550350

Record Type:

Component

Availability:

Transportation Research Board Business Office

500 Fifth Street, NW
Washington, DC 20001 United States

Abstract:

One solution to increase the life of pavement is to use material with high modulus in its asphalt base layer. The effectiveness of this layer as a part of pavement structure is closely dependent on how well its material is designed. This study presents the results of a series of tests on asphalt mixtures using polyolefin-modified binder to explore its potential to be used as high modulus material. In addition to the routine tests on the three different binder designs (5%, 7.5% and 10.5% polyolefin by weight of the base binder), dynamic modulus, wheel tracking, low-temperature beam bending, moisture susceptibility, and beam fatigue tests were conducted on the mixtures. Dynamic modulus test results showed a significant increase of the modulus of the proposed material compared with regular asphalt mixtures. Also, the results showed that these designs even with a lower dosage of polyolefin could achieve a better performance against rutting, moisture, and fatigue cracking. However, the low temperature cracking and fatigue cracking resistance of the proposed design could deteriorate if the polyolefin dosage over a certain amount is applied. The results of this study show a feasibility of using the polyolefin-modified asphalt mixture in the asphalt base layer of asphalt pavement while also providing a starting point for detailed material design in the context of specific environments.

Supplemental Notes:

This paper was sponsored by TRB committee AFD60 Flexible Pavement Design. Alternate title: Laboratory Performance Evaluation of High Modulus Asphalt Mixtures for Perpetual Asphalt Pavements.

Monograph Accession #:

01550057

Report/Paper Numbers:

15-2614

Language:

English

Corporate Authors:

Transportation Research Board

500 Fifth Street, NW
Washington, DC 20001 United States

Authors:

Wang, Haopeng
Jun, Yang
Gong, Minghui
Shi, Xiaoqiang

Pagination:

14p

Publication Date:

2015

Conference:

Transportation Research Board 94th Annual Meeting

Location: Washington DC, United States
Date: 2015-1-11 to 2015-1-15
Sponsors: Transportation Research Board

Media Type:

Digital/other

Features:

Figures; References; Tables

Uncontrolled Terms:

Moisture susceptibility; Polyolefin

Subject Areas:

Design; Highways; Materials; Pavements; I22: Design of Pavements, Railways and Guideways; I31: Bituminous Binders and Materials

Source Data:

Transportation Research Board Annual Meeting 2015 Paper #15-2614

Files:

TRIS, TRB, ATRI

Created Date:

Dec 30 2014 12:54PM