Performance of high RAP pavement sections in NH.

Daniel, Jo Sias; Jacques, Christopher; Salehi, Saeid

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Performance of high RAP pavement sections in NH.

2015-06-01
By Daniel, Jo Sias ; Jacques, Christopher ; Salehi, Saeid

File Language:

English

Details

Creators:

Daniel, Jo Sias ; Jacques, Christopher ; Salehi, Saeid
Corporate Creators:

University of New Hampshire. Dept. of Civil Engineering
Corporate Contributors:

United States. Federal Highway Administration
Subject/TRT Terms:
Publication/ Report Number:

FHWA-NH-RD-15680B
Resource Type:

Tech Report
Geographical Coverage:

New Hampshire
Corporate Publisher:

New Hampshire. Dept. of Transportation. Bureau of Materials and Research
Abstract:

This report summarizes the University of New Hampshire (UNH) results of test pavements used to ; determine the effect of using higher amounts of Recycled Asphalt Pavement (RAP) in Hot Mix Asphalt ; (HMA). ; The New Hampshire Department of Transportation (NHDOT) has allowed RAP in HMA for over 20 ; years but has limited use to 15-20% of the mix. This study evaluated the changes in performance due to ; increased amounts of RAP as well as evaluating the impact of bumping the binder grade (to a softer ; binder) for higher RAP contents. The pavements tested were in place for approximately three years. ; Long-term performance was not evaluated. Binder testing included PG grade, shear modulus master ; curve, and the multiple stress creep recovery test. Mixture testing included complex modulus, flow ; numbers, Hamburg Wheel tracking, and fatigue. Test results for both binder and mixes using PG 58-28 ; demonstrated expected results with high RAP contents having a stiffer modulus, better rutting ; performance, and lower fatigue resistance. The PG 52-34 binder had unexpected trends. Testing did ; not include determining the presence of binder additives. The results of this project support the practical ; limitation of 1% total recycled binder (TRB) in NHDOT surface mixtures.
Format:

PDF
Funding:

15680B, A001(089)
Download URL:

https://rosap.ntl.bts.gov/view/dot/29112/dot_29112_DS1.pdf
File Type:

[PDF - 3.30 MB]
Collection(s):

US Transportation Collection
Main Document Checksum:

urn:sha256:ef253c515c1d1ba674942cdffb3b68424fda3516bbb71403ad8c8064ebd557b7

File Language:

English

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