Details:

Creators:
Marquis, Brian
Corporate Creators:
Maine. Dept. of Transportation. Transportation Research Division
Subject/TRT Terms:
[+]
Bituminous Pavements Concrete Pavements Construction Field Studies Hot Mix Paving Mixtures Innovation Longitudinal Cracking Paved Shoulders Portland Cement Concrete Rigid Pavements Settlement (Structures)
Publication/ Report Number:
99-11
Resource Type:
Tech Report
Geographical Coverage:
Maine
Corporate Publisher:
Maine. Dept. of Transportation
Abstract:
Maine has hundreds of miles of highway that were constructed of Portland Cement Concrete (PCC)

roughly 5.5 to 6.0 m (18 to 20 ft) wide forty or more years ago. Since that time these same highways have

been paved and widened to 6.7 or 7.3 m (22 or 24 ft) with hot bituminous pavements to accommodate

increased traffic volumes and enhance roadway safety. Bituminous materials were used in place of

concrete due to the ease of placement and price of material.

PCC is a rigid pavement capable of supporting weight with little deflection. In contrast, hot bituminous

pavement is flexible and will flex to distribute weight across the roadway. When the highway is expanded

beyond the concrete slab, there is a sharp decrease of support for this bituminous pavement resulting in

settlement over prolonged use. This settlement may also be compounded by poor drainage capabilities of

the underlying soils causing the unsupported pavement to drop lower than the existing height of the

concrete supported pavement. This creates a longitudinal crack aligning with the concrete slab edge about

0.3 to 1 m (1 to 3 ft) from the right edge of pavement. Pavement to the right of this crack deteriorates to

the point where maintenance crews attempt to smooth it out with cold patch year after year. Paving over

the entire roadway is an option but, due to reflective cracking, the edge of pavement begins to deteriorate

within 2 or 3 years.

It is the intent of this experimental project to explore various shoulder treatments to increase support of

the extended roadway and hopefully decrease or eliminate deterioration of the shoulder pavement.


Format:
PDF
Collection(s):
US Transportation Collection
Main Document Checksum:
[+]
urn:sha256:80c6ead205a255f29071cfdc952c013dca34e8fa68105e71cc37661e26bd926c
Download URL:
https://rosap.ntl.bts.gov/view/dot/28511/dot_28511_DS1.pdf
File Type:

Supporting Files

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