04.02. Philadelphia, Pennsylvania: American So-
ture of the concrete and that of the air is not well
understood. It is a function of the heat evolved
ciety for Testing and Materials.
during curing, the air temperature, geometry, and
ASTM (1997) C39-96, Standard Practice for com-
other variables. Work needs to be done to enable
pressive strength of cylindrical concrete speci-
mens. Annual Book of ASTM Standards, Section 4,
low-temperature concrete to be mathematically
modeled. Much of the modeling already done for
Vol. 04.02. Philadelphia, Pennsylvania: American
normal concrete at temperatures above 5C can be
Society for Testing and Materials.
used in this endeavor. Knowing how to predict
Korhonen, C.J., and J.W. Brook (1996) Freezing
concrete performance is vital to efficient and safe
temperature protection admixture for portland
winter construction.
cement concrete. USA Cold Regions Research
and Engineering Laboratory, Special Report 96-
28.
LITERATURE CITED
Korhonen, C.J., B. Charest, and K. Romisch
(1997a) Developing new low-temperature admix-
ASTM (1987) C305-82, Standard practice for me-
tures for concrete. USA Cold Regions Research
chanical mixing of hydraulic cement pastes and
mortars of plastic consistency. Annual Book of
and Engineering Laboratory, Special Report 97-9.
ASTM Standards, Section 4, Vol. 04.01. Philadel-
Korhonen, C.J., E.R. Cortez, T.A. Durning, and
A.A. Jeknavorian (1997b) Antifreeze admixtures
phia, Pennsylvania: American Society for Testing
for concrete. USA Cold Regions Research and Engi-
and Materials.
neering Laboratory, Special Report 97-26.
ASTM (1993) C1231-93, Standard practice for use
U.S. Army (1998) Concrete and masonry. FM 5-
of unbonded caps in determination of compres-
428. Headquarters, Department of the Army, Wash-
sive strength of hardened concrete cylinders.
Annual Book of ASTM Standards, Section 4, Vol.
ington, D.C.
9