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Title:

Tack Coat Rheological Properties and the Effects on Bond Performance

Accession Number:

01661019

Record Type:

Component

Abstract:

CSS-1H emulsions are the most commonly used slow-setting grades in Oregon. “New” emulsions are the engineered emulsions recently developed in Oregon to reduce tracking and increase interlayer shear strength (ISS). In this study, the performance of these emulsions, most effective application rates, and the effects of pavement surface texture and traffic/environment on ISS were evaluated. Results indicated that there are positive correlations between rheological tests and ISS from field cores, which generated a linear equation that can predict in-situ ISS using the results of simple rheological experiments. Results showed variances in application rates and uniformity by distributor trucks. Hence, there is a need for unified guidelines on tack coat quality control and quality assurance (QC/QA) and construction practices.

Supplemental Notes:

This paper was sponsored by TRB committee AFK40 Standing Committee on Surface Requirements of Asphalt Mixtures.

Report/Paper Numbers:

18-01246

Language:

English

Authors:

Covey, David
Coleri, Erdem
Mahmoud, Aiman

Pagination:

9p

Publication Date:

2018

Conference:

Transportation Research Board 97th Annual Meeting

Location: Washington DC, United States
Date: 2018-1-7 to 2018-1-11
Sponsors: Transportation Research Board

Media Type:

Digital/other

Features:

Figures; References; Tables

Geographic Terms:

Oregon

Subject Areas:

Highways; Materials; Pavements

Source Data:

Transportation Research Board Annual Meeting 2018 Paper #18-01246

Files:

TRIS, TRB, ATRI

Created Date:

Jan 8 2018 10:19AM