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Title:

Evaluation of Long-Term Performance of Cold In-Place Recycled Asphalt Roads

Accession Number:

01044233

Record Type:

Component

Availability:

Transportation Research Board Business Office

500 Fifth Street, NW
Washington, DC 20001 United States

Abstract:

Cold In-Place Recycling (CIR) provides an economical rehabilitation method that mitigates crack reflection by pulverizing the asphalt pavement surface, thus destroying the old crack pattern in the recycled layer. However, recycled roads have inconsistent performance. Several years after recycling, some roads are still in excellent condition with only a few minor cracks while extensive cracking and rutting were observed on other roads. These opposite behaviors can be observed on roads that were constructed in the same county, by the same contractor in the same construction season. Thus the difference in performance is probably not from such factors as weather, equipment, contractors’ experiences, and construction procedures. Rather, other factors become more prominent in affecting pavement performance, such as: age of the recycled pavement; traffic volume; support conditions; and aged engineering properties of the CIR materials. This paper investigates how aged engineering properties of the CIR materials and other factors affect pavement performance. Twenty-four sample roads were selected to represent various ages, traffic volumes, and support conditions in a geographically balanced sampling in Iowa. Pavement Condition Index (PCI) ratings were collected using an automated pavement distress digital image collection and analysis system. Engineering properties of CIR materials were examined through field and lab tests. Statistical analyses were conducted to describe the relationships between the pavement performance and the prominent factors. The conclusions and recommendations were presented.

Monograph Accession #:

01042056

Report/Paper Numbers:

07-2188

Language:

English

Corporate Authors:

Transportation Research Board

500 Fifth Street, NW
Washington, DC 20001 United States

Authors:

Chen, Dong
Jahren, Charles T
Lee, Hosin
Williams, R Christopher
Kim, Sunghwan
Kim, Jungyong

Pagination:

24p

Publication Date:

2007

Conference:

Transportation Research Board 86th Annual Meeting

Location: Washington DC, United States
Date: 2007-1-21 to 2007-1-25
Sponsors: Transportation Research Board

Media Type:

CD-ROM

Features:

Figures (6) ; References (34) ; Tables (4)

Geographic Terms:

Iowa

Subject Areas:

Design; Highways; Pavements; I22: Design of Pavements, Railways and Guideways

Source Data:

Transportation Research Board Annual Meeting 2007 Paper #07-2188

Files:

TRIS, TRB

Created Date:

Feb 8 2007 6:52PM