Details:

Creators:
Figueroa, J. Ludwig
Corporate Creators:
Case Western Reserve University. Dept. of Civil Engineering
Corporate Contributors:
Ohio. Dept. of Transportation ; United States. Federal Highway Administration
Ohio. Dept. of Transportation ; United States. Federal Highway Administration Less -
Subject/TRT Terms:
[+]
Asphalt Concrete Pavements
Backcalculation
Data Analysis
Design
Environmental Factors
Flexible Pavements
Moisture
Monitors
Non-destructive Testing
Ohio
Rainfall
Recording Stations
Resilient Modulus
Seasonal Variations
Temperature
Asphalt Concrete
Nondestructive Tests
Pavement Design
Subgrade (Pavements)

Publication/ Report Number:
FHWA/OH-2001/09
Resource Type:
Tech Report
Geographical Coverage:
Ohio
OCLC Number:
663140809
Edition:
Research implementation plan.
Corporate Publisher:
Case Western Reserve University. Dept. of Civil Engineering
NTL Classification:
NTL-ENERGY AND ENVIRONMENT-Environment Impacts ; NTL-HIGHWAY/ROAD TRANSPORTATION-Pavement Management and Performance ; NTL-REFERENCES AND DIRECTORIES-Statistics ;
Abstract:
Variations in the mechanical properties of materials of a flexible pavement affect its response to applied

loads in the form of deflections, stresses and stains. The resilient modulus of asphalt concrete and of fine

grained subgrade soil vary seasonally as a result of weather related elements such as temperature and

rainfall. Knowing the expected variation of layer properties throughout the pavement’s service life will

lead to more accurate pavement designs when analyzed with a mechanistic/empirical based design

procedure.

To study the variations in mechanical properties of the pavement layers due to environmental factors,

nine recording stations were installed throughout Ohio to monitor asphalt, subgrade soil, and air

temperature; subgrade soil degree of saturation; and rainfall under a research project entitled

“Characterization of Ohio Subgrade Types”. The sites were selected to include statewide climatic

variations and the most prevalent soil types (A-3, A-4, A-6, and A-7). One site was installed the fall of

1991. The remaining sites were installed the spring of 1992. The sites were monitored for a two and half

year period under the initial project. Data retrieved from the stations with fine grained soil showed the

degree of saturation for the most part was close to 100%, but varied from 80% to 100%.

Further monitoring was needed to verify the initial observed trends in soil saturation and to improve initial

developed relationships between air temperature and average pavement temperature.


Format:
PDF
Collection(s):
US Transportation Collection
Main Document Checksum:
[+]
urn:sha256:9a36b2314473b814124796d860aef12321e36a6ef7e864def9c4ed6ec9af533b
File Type:

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