Laboratory evaluation of high asphalt binder replacement with recycled asphalt shingles (RAS) for a low n-design asphalt mixture.

Ozer, Hasan; Al-Qadi, Imad L.; Kanaan. Ahmad; Illinois Center for Transportation; University of Illinois at Urbana-Champaign. Dept. of Civil and Environmental Engineering

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Laboratory evaluation of high asphalt binder replacement with recycled asphalt shingles (RAS) for a low n-design asphalt mixture.

2012-10-01
By Ozer, Hasan ; Al-Qadi, Imad L. ; Kanaan. Ahmad

[PDF-2.46 MB]

English

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Details:

Creators:

Ozer, Hasan ; Al-Qadi, Imad L. ; Kanaan. Ahmad

Ozer, Hasan ; Al-Qadi, Imad L. ; Kanaan. Ahmad Less -
Corporate Creators:

Illinois Center for Transportation ; University of Illinois at Urbana-Champaign. Dept. of Civil and Environmental Engineering

Illinois Center for Transportation ; University of Illinois at Urbana-Champaign. Dept. of Civil and Environmental Engineering Less -
Corporate Contributors:

United States. Federal Highway Administration
Subject/TRT Terms:

[+]

Asphalt Mixtures Asphalt Pavements Bituminous Binders Deformation Fatigue Tests Fracture Tests Laboratory Tests Mix Design Recycled Materials Stiffness Tests
Publication/ Report Number:

FHWA-ICT-12-018 ; ICT-12-018 ; UILU-ENG-2012-2020

FHWA-ICT-12-018 ; ICT-12-018 ; UILU-ENG-2012-2020 Less -
Resource Type:

Tech Report
Geographical Coverage:

Illinois
Corporate Publisher:

Illinois. Dept. of Transportation. Bureau of Materials and Physical Research
Abstract:

This study investigated the effect of high asphalt binder replacement for a low N-design asphalt mixture including

RAP and RAS on performance indicators such as permanent deformation, fracture, fatigue potentials, and

stiffness, was studied. An experimental program included complex modulus, fracture, overlay reflective cracking

resistance, wheel track permanent deformations, and push-pull fatigue tests. The asphalt binder replacement,

combinations of RAS and RAP asphalt binder, levels in the mix were in a range of 43 to 64%. According to the

results obtained from the experimental program, permanent deformation resistance of the mixtures was improved

in the presence of RAS. Fracture tests at low temperature did not reveal any significant difference between the

specimens prepared at varying percentages of asphalt binder replacement. Fatigue potential of mixtures increased

with increasing RAS content and asphalt binder replacement. The specimens prepared with 2.5% RAS and PG 46-

34 showed the best fatigue performance. The impact of asphalt binder bumping was highlighted by the results of

all tests. The improvement in fatigue life and fracture energy was noticeable when the asphalt binder type was

changed from PG 58-28 to PG 46-34 at the highest asphalt binder replacement level. The results showed that

complex modulus test results can provide crucial information about the mix viscoelastic properties such as

relaxation potential and long-term stiffness that can be used, along with fracture tests, to evaluate mix brittleness at

relatively high asphalt binder replacement levels.
Format:

PDF
Funding:

R27-SP19
Collection(s):

US Transportation Collection
Main Document Checksum:

[+]

urn:sha256:1a61bc8e43502aa1d61b93f52420fb65999ed50df17b8b7fd1c513d1ad005f4f
Download URL:

https://rosap.ntl.bts.gov/view/dot/26727/dot_26727_DS1.pdf
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Laboratory evaluation of high asphalt binder replacement with recycled asphalt shingles (RAS) for a low n-design asphalt mixture.

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