United States Department of Transportation
i
Effects of curing methods and supplementary cementitious material use on freeze thaw durability of concrete containing d-cracking aggregates.
-
2013-12-01
-
[PDF-2.25 MB]
Details:
-
Creators:
-
Corporate Creators:
-
Subject/TRT Terms:
-
Publication/ Report Number:
-
Resource Type:
-
Geographical Coverage:
-
Corporate Publisher:
-
Abstract:For concrete pavements in Kansas, the most effective method of increasing their sustainability is to
increase the service life. One of the principle mechanisms of concrete pavement deterioration in Kansas is
freezing and thawing damage. Some Kansas limestone aggregates are known to be very susceptible to Dcracking
and have resulted in millions of dollars in maintenance costs. The Kansas Department of
Transportation (KDOT) has developed rigorous testing procedures for limestone aggregate use in concrete.
In this study, the role of concrete curing, mixture proportioning, and aggregate type on the freeze thaw
durability of concrete beams tested using ASTM C 666 method B were investigated. This study found that
long periods of soaking in lime water produced more damage during freezing and thawing than standard
KDOT curing methods. Curing for shorter period of time in a lime water bath at 100°F however gave
comparable freeze thaw results to that seen with the longer standard KDOT curing regime. Increasing the
concretes resistance to water penetration can greatly increase the freeze thaw durability of concrete
containing D-cracking susceptible aggregates. It was seen that the concrete volume of permeable voids and
water absorption rate correlated well with the freeze thaw durability of concrete made with a poor quality
aggregates. It is recommended that KDOT continue to enforce concrete permeability and volume of
permeable voids specifications to improve the service life of Kansas concrete pavements.
-
Format:
-
Funding:
-
Collection(s):
-
Main Document Checksum:
-
Download URL:
-
File Type:
