Minimum virgin binder limits in recycled superpave mixes in Kansas : final report.

Tavakol, Masoumeh; Hossain, Mustaque; Kansas State University. Transportation Center; Kansas State University. Department of Civil Engineering

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Minimum virgin binder limits in recycled superpave mixes in Kansas : final report.

2016-07-01
By Tavakol, Masoumeh ; Hossain, Mustaque

[PDF-3.43 MB]

English

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Details:

Creators:

Tavakol, Masoumeh ; Hossain, Mustaque

Tavakol, Masoumeh ; Hossain, Mustaque Less -
Corporate Creators:

Kansas State University. Transportation Center ; Kansas State University. Department of Civil Engineering

Kansas State University. Transportation Center ; Kansas State University. Department of Civil Engineering Less -
Corporate Contributors:

Kansas. Dept. of Transportation. Bureau of Research
Subject/TRT Terms:

[+]

Binder Content Cracking Hot-mix Asphalt Hot Mix Asphalt Mix Design Mixture Performance Properties Moisture Content Pavement Performance Recycled Asphalt Pavement Recycled Asphalt Shingle Recycled Materials Recycled Superpave Mixture Rutting Shingles Superpave
Publication/ Report Number:

K-TRAN: KSU-13-5
Resource Type:

Tech Report
Geographical Coverage:

United States ; Kansas

United States ; Kansas Less -
Edition:

Final Report, July 2012-June 2016
Corporate Publisher:

Kansas. Dept. of Transportation
Abstract:

Use of recycled materials in asphalt pavement has become widespread recently due to rising costs of virgin

binder and increased attention to sustainability. Historically, recycled asphalt pavement (RAP) has been the most

commonly used recycled material for hot-mix asphalt (HMA). However, recycled asphalt shingle (RAS), another

recycled material, has recently become popular. Although there are some guidelines regarding use of RAP and RAS in

HMA, their effects on mixture performance, especially on mixtures containing RAS, are not thoroughly understood.

In this research, three recycled Superpave (SR) mixture designs from the Kansas Department of Transportation

(KDOT) with 9.5-mm (SR-9.5A) and 19-mm (SR-19A) nominal maximum aggregate size (NMAS) were selected as

control mixtures. Mixtures containing higher percentages of recycled materials (RAP and RAS) were developed using

KDOT blending charts. A total of nine mixtures with varying virgin binder contents were designed and assessed for

moisture susceptibility, rutting resistance, and fatigue cracking propensity using modified Lottman, Hamburg Wheel

Tracking Device, flow number, Dynamic Modulus, and S-VECD direct tension fatigue tests.

Results confirmed the effect of NMAS and material source on mixture performance. For SR-9.5A, the

mixtures showed increased susceptibility to moisture and rutting damage below virgin binder content of 75%. For SR-

19A, mixtures with virgin binder content of 70% showed satisfactory performance properties. Mixtures with virgin

binder contents lower than 60% definitely showed inferior performance.
Format:

PDF
Funding:

C1937
Collection(s):

US Transportation Collection
Main Document Checksum:

[+]

urn:sha256:d50208e1b1d29583c0314bb386a4b1f438fe9a9e93ffef749974b2fbadd6ea57
Download URL:

https://rosap.ntl.bts.gov/view/dot/30910/dot_30910_DS1.pdf
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Minimum virgin binder limits in recycled superpave mixes in Kansas : final report.

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