18 • October 2016 www.concreteproducts.com
NEWS SCOPE
MATERIALS
Insulated mold prepares cylinders to emulate in-place strength development
Concrete Block Insulating Systems'
patent-pending TempGuard from
Eskimold, a 4- x 8-in. EPS foam
mold, replaces plastic concrete test
cylinders and eliminates nearly all
need for curing boxes. TempGuard's
insulating properties dramatically
reduce and slow the detrimental
effects variable jobsite tempera-
tures have on concrete test cylinder
curing, product developers note.
The mold performs in hot or cold
conditions by moderating specimen
temperature changes and ensuring
the test material cures more like
the in-place concrete. TempGuard
nets what Eskimold engineers
contend are "better and more re-
alistic test results in both jobsite
and factory environments, without
any change from regular specimen
handling or testing methods." —
Eskimold Products, 800/214-3750,
414/559-6434; www.eskimold.net
COLD WEATHER
Elapsed time vs. temperature drop
Testing specimen stability in cold weather conditions, Eskimold
engineers placed fresh concrete, measured at 73.5°F, in plastic and
TempGuard cylinders at 25° ambient outdoor temperature. Concrete in
the plastic cylinder dipped to 32° in about five hours, about one-quar-
ter the time the TempGuard specimen held above freezing.
WARM WEATHER
Cross-over effect
Testing warm weather conditions and stable curing prospects, Eskimold
engineers placed fresh concrete on a mildly warm day in TempGuard and
standard cylinders. Based on test results provided by Con-Cure Concrete
Maturing Solutions, the latter specimen exhibited a 30°F swing above
and below the TempGuard specimen, leading to the potential crossover
effect: Higher early temperatures yield higher early but lower long-term
concrete strength.
FUEL SAVINGS UP TO 50%
STEAM IN 15 SECONDS
CARBON MONOXIDE LEVELS BELOW 20 PPM
NO STATIONARY ENGINEER REQUIRED
NO STACK OR BOILER ROOM REQUIRED
NO CHEMICAL TREATMENT OF WATER
STEAM PRESSURES UP TO 14.7 PSIG
www.Vortomech.com
+1-800-973-1999
AGGREGATES AND WATER HEATING
WITH ONE STEAM GENERATOR
Steam
Heating
Solutions
PRE-CAST / BLOCK CURING