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Winter often causes concreting operations to cease altogether.
Inditherm has developed a revolutionary new concept for accelerating in-situ
concrete curing using blankets heated with its low voltage carbon polymer
technology (CPT). The system provides protection to early age concrete,
preventing damage from freezing and ensuring development of adequate strength.
The use of heated blankets enables concreting practices to be undertaken in cold
ambient conditions, allowing strength development and durability to satisfy
service requirements. This helps construction companies to achieve better
control over their concreting operations, as well as helping to avoid costly
penalties for late project completion.
Currently, when a day is deemed a "cold weather day", concreting operations
usually have to be ceased or adequate procedures to protect the concrete have to
be put in place. Implications of concreting during cold periods result in the
following complications:
- The degree of saturation of the concrete falls below
critical level.
- The concrete freezes before a minimum strength of
3.5MPa has been achieved.
- The hydration reaction of the concrete stops and the concrete does not
gain strength.
If frost protection measures are not put in place, drastic measures, such as
the removal and replacing the cast concrete, may be required.
Inditherm concrete curing blankets can overcome this by maintaining the
temperature of the cast concrete at early ages or by raising the core
temperature of the newly-cast element to accelerate the rate of strength
development of the concrete.
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