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Title:

Materials Approach to Improving Asphalt Pavement Longitudinal Joint Performance

Accession Number:

01763763

Record Type:

Component

Availability:

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Order URL: http://worldcat.org/issn/03611981

Abstract:

Many states are looking for methods to improve longitudinal joint performance of their asphalt pavements, since these joints often fail before the rest of the surface. With their inherently lower density, longitudinal joints fail by cracking, raveling, and potholing because of the intrusion of air and water. Because of their longitudinal joint issues, and after trying several less-than-successful traditional solutions, Illinois Department of Transportation (IDOT) developed a concept to seal the longitudinal joint region, but from the bottom up. Test sections were constructed in 2001 through 2003 to determine how a newly developed material, called longitudinal joint sealant (LJS), would improve joint performance. LJS is a highly polymer-modified asphalt cement with fillers and is placed at the location of a longitudinal joint before paving. As mix is paved over it, the LJS melts and migrates up into voids in the low-density mix, making the mix impermeable to moisture while sealing the longitudinal joint itself. The IDOT test pavements were evaluated after 12?years and found to have longitudinal joints that exhibited significantly better performance than the control joint sections and were in similar or better condition than the rest of the pavement. Laboratory testing of cores showed decreased permeability and increased crack resistance of mix near joints with LJS as compared with similar mix without LJS. The life extension of the joint area is approximately 3–5?years, and the benefit is calculated to be three to five times the initial cost.

Supplemental Notes:

John Senger https://orcid.org/0000-0002-7810-2993 © National Academy of Sciences: Transportation Research Board 2021.

Report/Paper Numbers:

TRBAM-21-00760

Language:

English

Authors:

Trepanier, Jim
Senger, John

ORCID 0000-0002-7810-2993

Thomas, Todd
Exline, Marvin

ORCID 0000-0002-2115-5146

Pagination:

pp 429-439

Publication Date:

2022-2

Serial:

Transportation Research Record: Journal of the Transportation Research Board

Volume: 2676
Issue Number: 2
Publisher: Sage Publications, Incorporated
ISSN: 0361-1981
EISSN: 2169-4052
Serial URL: http://journals.sagepub.com/home/trr

Media Type:

Digital/other

Features:

Figures; Photos; References (18) ; Tables

Subject Areas:

Highways; Materials; Pavements

Files:

TRIS, TRB, ATRI

Created Date:

Dec 23 2020 11:10AM