United States Department of Transportation
ROSA P serves as an archival repository of USDOT-published products including scientific findings, journal articles, guidelines, recommendations, or other information authored or co-authored by USDOT or funded partners.
As a repository, ROSA P retains documents in their original published format to ensure public access to scientific information.
i
Laboratory study of concrete properties to support implementation of the new AASHTO mechanistic-empirical pavement design guide.
-
2012-09-01
-
[PDF-4.12 MB]
Details:
-
Creators:
-
Corporate Creators:
-
Subject/TRT Terms:
-
Publication/ Report Number:
-
Resource Type:
-
Geographical Coverage:
-
Edition:Final report.
-
Corporate Publisher:
-
Abstract:Properties of concrete embodying materials typically used in Wisconsin paving projects were evaluated in support of future
implementation of the AASHTO Mechanistic-Empirical Pavement Design Guide (MEPDG). The primary concrete
properties studied were compressive strength, flexural strength, modulus of elasticity, indirect tensile strength, coefficient of
thermal expansion, and Poisson’s ratio. Materials included fifteen sources of coarse aggregate, two sources of fine
aggregate, two sources of ordinary Portland cement, two sources of slag cement, and three sources of fly ash. The results
showed the type of coarse aggregate had the greatest effect on all concrete properties compared to the rest of the
components changed in this study. MEPDG pavement thickness design was found to vary with coarse aggregate source and
the use of supplementary materials. The MEPDG default level 2 and 3 empirical relations for material properties proved
conservative for typical Wisconsin pavement projects based on predicted critical thicknesses. Two alternative options for
empirical equations based on this study’s test results were found to be more accurate to actual test results than default level
2 empirical relations. One option was a least-squares best fit property prediction line based on all the test results. The other
option was to split the concrete property predictions into two equations based on coarse aggregate mineralogy. Comparisons
with previous relevant WHRP reports are included.
-
Format:
-
Funding:
-
Collection(s):
-
Main Document Checksum:
-
Download URL:
-
File Type:
