Details:

Creators:
Boisvert, Denis M.
Corporate Creators:
New Hampshire. Dept. of Transportation
Corporate Contributors:
United States. Federal Highway Administration
Subject/TRT Terms:
[+]
Asphalt Pavements Bituminous Overlays Hot Mix Asphalt Milling Pavements, Asphalt Pavements, Bituminous--Overlays Rumble Strips Surface Preparation
Publication/ Report Number:
FHWA-NH-RD-13733V
Resource Type:
Tech Report
Geographical Coverage:
New Hampshire
Edition:
Final report.
Corporate Publisher:
New Hampshire Department of Transportation
Abstract:
The use of rumble strips in pavement to reduce run-off-road accidents is relatively new. In New Hampshire, these installations began in the mid to

late 1990s. The New Hampshire Department of Transportation performed its first overlay of rumble strips in Nashua on its Central Turnpike during

the 2003 construction season. The rumbles immediately reflected through the one-inch overlay, raising concerns over whether these features

should receive special preparation.

A national materials list-serve was used to solicit the practices of other state and provincial agencies. Eighteen respondents indicated a range of

opinion from grinding the strip and shimming before paving, to doing nothing provided the strip is less than a ½-inch deep and the overlay is more

than 4 inches. The opinions appeared to be based on general paving experience rather than knowledge about this specific condition. An additional

17 respondents either had no opinion, or did not install rumble strips. We concluded that there was no conventional method for overlaying rumble

strips.

This research project was launched with the objective of developing appropriate techniques, sequences and/or options to perform the preparation

and overlay operation successfully and economically. Rumble strip pavement performance within the study area demonstrated that the simplest

and least costly method produced a durable pavement and replacement rumble strip, but other problems related to thin lift overlays during

subsequent paving seasons eventually lead to a specification requiring the preparation treatment needing the greatest effort.

For the 2010 season, NHDOT elected to require that all rumbles be milled and inlayed prior to placement of the overlay. The inlay technique has

been successfully used without overlay for removal of rumble strips to create temporary traffic detours.

At the time of this report, contractors have developed the tools and techniques needed to install the 20-inch wide inlay with reasonable efficiency,

such that it is not the laborious, hand-work operation that it was during the test site construction in 2005. A new bid item has been added to the

construction contracts that provide for an intermediate bid price that is neither full-lane machine method, nor high cost handwork. The item includes

the rumble milling and replacement inlay.


Format:
PDF
Funding:
13733V, X-A000(385)
Collection(s):
US Transportation Collection
Main Document Checksum:
[+]
urn:sha256:3a0836c907fbe4485beac8af405bcaf21e68a48d5fdf8c072838f07d62671db5
Download URL:
https://rosap.ntl.bts.gov/view/dot/25750/dot_25750_DS1.pdf
File Type:

Supporting Files

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