Covering Concrete is our Business
CONCRETE CURING BLANKETS
THERMA-CRETE Concrete Frost Curing Blankets are a revolutionary new system providing protection to early age concrete, preventing damage from freezing and ensuring development of adequate strength.
The use of the blankets enables concreting
laying to be undertaken in cold ambient conditions, allowing strength development and durability to satisfy service requirements.
Cold weather is generally regarded as being when the average daily ambient air temperature is less than 5°C or when the air temperature is not greater than 10°C for more than one half of any 24hr period.
• 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
When concrete is being managed under cold weather, concrete must be protected from freezing shortly after being poured. Also concrete must be able to develop required strength for the safe removal of forms while reducing the circumstances where excessive must be applied to help concrete develop the required strength. Other important factors that must be considered are the proper curing conditions that prevent cracking and provide the intended serviceability of the structure.
Lightweight and easy to handle, the Therma-Crete® blankets help fresh concrete to cure in cold weather. Fresh concrete has its own heat, called heat of hydration. In many circumstances, if properly trapped and insulated, this heat will be generated in sufficient quantity to be the only source of heat necessary during a 3 day curing cycle whilst insulating it from the environment. and ambient air temperature.
Therma-Crete Curing Blankets are made in two thicknesses:
As Therma-Crete is made a Multi-laminate it is supplied in 50 Metre roll lengths each 1.5 metres in width.
There is no sewing of joints or seams to leak or unravel, no cold spots or weak points, and no water or air can permate through the tough blue outer material.
Closed-cell insulation means no gaps, no absorption of water if blanket is damaged. Insulation can't tear loose, shift or bunch up.
The Blue Polypropylene fabric is an abrasive resistant outer fabric designed to protect the insulation for less likelihood of damage in service or in storage.
Prevention is better than cure !
If frost protection is not put in place, drastic measures such as the removal and replacing the cast concrete may be required.
Existing methods are extremely antiquated and generally consume vast quantities of fuel.
Traditionally, rather than providing heat directly to the concrete, the ambient in which the
concreting is to take place is increased using hot air, and open flame blowers, within a
purpose-built temporary enclosure.
Therma-Crete can be used to accelerate the manufacture of concrete elements in precast units, replacing existing, antiquated curing practices.
By using Therma-Crete Curing Blankets, the concrete cures far more rapidly which reduces lead times in manufacturing, cutting energy costs and improving health & safety.