Comparison of Different Curing Methods for High-Performance Concrete and the
Effects on Strength and Durability
Jonsson, J. A., Olek, J., Leeman, M. E., and Nantung, T., 2003,
“Comparison of Different Curing Methods for High-Performance Concrete and the
Effects on Strength and Durability,” 3rd International Symposium on High
Performance Concrete, Proceedings of Symposium in Orlando, Florida, October
19-22, 2003, Precast/Prestressed Concrete Institute, Chicago, CD-ROM, 10 pp.
As a part of a larger study, the effects of different humidity and temperature
conditions during curing of high-performance concrete on compressive strength
and selective durability properties were compared. Cylinders from three
highperformance concrete mixtures and a control mixture were prepared. The
cylinders from each mixture were divided into four groups. The following curing
conditions were evaluated: standard moist curing, moist curing for three days
followed by curing at 50 % relative humidity, temperature-match-curing for the
first day followed by moist curing, and curing in sealed plastic molds. Results
from compressive strength and electrical indication of concrete's ability to
resist chloride ion penetration tests indicate that curing concrete at 50 %
relative humidity compromises compressive strength development and resistance to
chloride ion penetration. Curing the specimens in sealed forms from the time
they were cast until they were tested yielded results that were comparable to
those obtained from continuously moist cured specimens. Accelerated curing of
specimens for electrical indication of concrete's ability to resist chloride ion
penetration appeared to be a valid method for obtaining 28-day results that are
comparable to those obtained after 91 days.
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