Development of a Standard Practice for the Design of Open-Graded Friction Course (OGFC) Mixtures with Epoxy Asphalt [Technical Summary]

Mohammad, Louay N.; Louisiana Transportation Research Center

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ROSA P serves as an archival repository of USDOT-published products including scientific findings, journal articles, guidelines, recommendations, or other information authored or co-authored by USDOT or funded partners. As a repository, ROSA P retains documents in their original published format to ensure public access to scientific information.

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Development of a Standard Practice for the Design of Open-Graded Friction Course (OGFC) Mixtures with Epoxy Asphalt [Technical Summary]

2025-06-01
By Mohammad, Louay N.

[PDF-234.52 KB]

English

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Details:

Creators:

Mohammad, Louay N.
Corporate Creators:

Louisiana Transportation Research Center
Corporate Contributors:

Louisiana. Department of Transportation and Development
Subject/TRT Terms:

[+]

Asphalt Content Binder Content Crumb Rubber Epoxides Moisture Damage Open Graded Aggregates
Publication/ Report Number:

LTRC Report 696
Resource Type:

Brief
Geographical Coverage:

United States
Edition:

Technical Summary
Contracting Officer:

Rupnow, Tyson
Corporate Publisher:

Louisiana. Department of Transportation and Development
Abstract:

Open-graded friction course (OGFC) is a thin asphalt mixture surface layer. It is gap-graded with a high percentage of coarse aggregates that are nearly uniform in size, resulting in a high percentage of interconnected air voids and asphalt binder, which provides improved skid resistance, visibility, and decreased pavement-tire noise. However, construction personnel at the Louisiana Department of Transportation and Development (DOTD) reported that conventional OGFC mixtures have durability issues and a shorter service life compared to thin asphalt mixture lifts. The objective of this study was to evaluate the durability and performance of OGFC mixtures containing various types of asphalt binders. Six types of asphalt binders were utilized: unmodified PG 67-22 asphalt binder; conventional styrene-butadiene-styrene (SBS)-modified PG 76-22M asphalt binder; high-SBS content PG 88-28 asphalt binder; diluted epoxy-modified asphalt (EA) binder prepared at two dosage rates (25% and 50% by weight of asphalt binder); and a hybrid PG 76-22G modified asphalt binder prepared with SBS and crumb rubber modifier (CRM). Chemical compatibility and microscopic analyses were first conducted on EA binders to assess the compatibility between multiple asphalt binder sources and the EA binder.
Format:

PDF
Funding:

SIO No. DOTLT1000384 LTRC Project No. 21-4B
Collection(s):

US Transportation Collection
Main Document Checksum:

[+]

urn:sha-512:bcfe4f80fcda9647a84f0b6195846a4686fbfd729f9899b343d5098467695fb939305b91066928ae2fd83b1ed443ba86a6fa063914ca58505a87f38a00e7bb56
Download URL:

https://rosap.ntl.bts.gov/view/dot/84608/dot_84608_DS1.pdf
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Development of a Standard Practice for the Design of Open-Graded Friction Course (OGFC) Mixtures with Epoxy Asphalt [Technical Summary]

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