Refinement of current WisDOT HMA mixture application guidelines related to NMAS and aggregate characteristics.

Christensen, Donald W.; Hanz, Andrew; Velasquez, Raul; Arshadi, Amir; Bahia, Hussain

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Refinement of current WisDOT HMA mixture application guidelines related to NMAS and aggregate characteristics.

2014-01-01
By Christensen, Donald W. ; Hanz, Andrew ; Velasquez, Raul

File Language:

English

Details

Creators:

Christensen, Donald W. ; Hanz, Andrew ; Velasquez, Raul ; Arshadi, Amir ; Bahia, Hussain
Corporate Creators:

Advanced Asphalt Technologies, LLC
Corporate Contributors:

Wisconsin Highway Research Program ; United States. Federal Highway Administration
Subject/TRT Terms:
Publication/ Report Number:

0092-12-01
Resource Type:

Tech Report
Geographical Coverage:

Wisconsin
Corporate Publisher:

Wisconsin. Dept. of Transportation. Library and Research Unit
Abstract:

Current Wisconsin Department of Transportation (WisDOT) Specifications limit nominal maximum aggregate ; size (NMAS) of hot-mix asphalt (HMA) to 12.5 mm in the surface layer and 19.0 mm in lower layers. This ; potentially places unnecessary limits on both construction practice and pavement design. The purpose of this ; research project was to evaluate the feasibility of expanding WisDOT specifications to include a wider range of ; aggregate NMAS and lift thicknesses in HMA pavements. In addition to a literature review, a variety of models ; and laboratory tests were used to determine the likely effects of varying NMAS and lift thickness on various ; aspects of pavement performance. Based upon this research, it is recommended that WisDOT allow use of 9.5 ; and 12.5 mm NMAS in HMA surface layers, and 12.5 mm and 19 mm NMAS in intermediate and base layers. ; Additional recommendations, including restrictions on lift thickness, are also given in the report.
Format:

PDF
Download URL:

https://rosap.ntl.bts.gov/view/dot/27267/dot_27267_DS1.pdf
File Type:

[PDF - 1.94 MB]
Collection(s):

US Transportation Collection
Main Document Checksum:

urn:sha256:4445ec5f11014d83a9a14160ad915ce5e83d1d56bd9d336572ad832b1a377df1

File Language:

English

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