Details:

Creators:
Bush, Amanda Joy ;
Corporate Creators:
Oregon. Dept. of Transportation. Research Unit ;
Subject/TRT Terms:
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Air-entrained Concrete
Concrete--Air Content--Evaluation
Roads--Crash Cushions--Climatic Factors
Roads--Oregon--La Grande--Crash Cushions--Evaluation
Barriers (Roads)
Concrete
Crash Cushions
Entrained Air
Roads

Publication/ Report Number:
OR-RD-08-09 ;
Resource Type:
Tech Report ;
Geographical Coverage:
Oregon ;
OCLC Number:
747721933
Edition:
Final report.
Corporate Publisher:
Oregon. Dept. of Transportation. Research Unit ;
NTL Classification:
NTL-OPERATIONS AND TRAFFIC CONTROLS-Traffic Control Devices ; NTL-OPERATIONS AND TRAFFIC CONTROLS-OPERATIONS AND TRAFFIC CONTROLS ; NTL-HIGHWAY/ROAD TRANSPORTATION-Design ; NTL-HIGHWAY/ROAD TRANSPORTATION-Bridges and Structures ; NTL-HIGHWAY/ROAD TRANSPORTATION-Materials ;
Abstract:
Several precast concrete barriers in eastern Oregon were noted to be deteriorating at an advanced rate. The ODOT Research Unit took several core samples from the barriers and conducted analyses. Petrographic evaluations determined that the strongest link between barrier deterioration and any one factor was the amount of entrained air. In general, older, poor-quality concrete, which was continually exposed to freeze-thaw events, exhibited advanced signs of distress.
Format:
PDF ;
Funding:
RS 500-211 ;
Collection(s):
US Transportation Collection
Main Document Checksum:
[+]
urn:sha256:f3265e808d256c311643011f147ef98f4df2d2264bd2c911171b2ea0f0927f9f
File Type:

Supporting Files

• No Additional Files

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