Details:

Creators:
Marquis, Brian
Corporate Creators:
Maine. Dept. of Transportation. Transportation Research Division
Subject/TRT Terms:
[+]
Bituminous Pavements Concrete Pavements Construction Hot Mix Paving Mixtures Innovation Longitudinal Cracking 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 6 to 6.1 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 m (22 or 24 ft) with hot bituminous pavements to

accommodate increased traffic volumes. 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. Hot bituminous pavement is flexible and will bend 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.


Format:
PDF
Collection(s):
US Transportation Collection
Main Document Checksum:
[+]
urn:sha256:5d84254f13dbdc577724d62f00dde99d16b6e9bb3d74f6786b1366fb6b447b30
Download URL:
https://rosap.ntl.bts.gov/view/dot/28509/dot_28509_DS1.pdf
File Type:

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