Concrete retardant additive
Retak-1 is a concrete retarder additive that is used in bulk concreting and structural concretes that delay the setting time.
application
“Retak-1 is used as a retardant product in bulk concreting as well as the following.
”
Avoid making cold connections
Facilitate the transport of concrete over long distances
Frameless construction fittings
Concreting in very hot weather
Concretes in need of re-vibration
Bulk concreting (dam construction) and semi-bulk concreting (large foundations)
Creating a controlled delay in setting the concrete
advantages
Making concrete with controlled setting
This product does not contain chloride ions and does not corrode the rebars in any way.
Delaying the initial setting of concrete and at the same time accelerating the hardening process of concrete
packaging
Retak-1 is available in 20 gallons, 220 liter barrels and 1100 kg tanks.
Typical properties
physical state liquid
color brown
special weight @ 25°C 1.08 – 1.11
pH 5.0 – 7.0
chloride ion no
* The mentioned data are obtained based on the latest controlled laboratory tests.
Standards
This product can be evaluated based on the following standards
isiri 2930, ASTM C 494 type B, EN 934 part B
application guidline
The recommended dose of this product depends directly on the concrete temperature, ambient temperature and expected setting time. Consumption of this product is between 0.2 to 3% of cement consumption, which is determined by conducting workshop tests of the optimal dose.
It is possible to change the consumption dose from the specified range for projects with special workshop conditions, only with the permission of Partak concrete technology experts.
mixing
The best way to use it is to add Retak-1 after adding all the water to the fresh concrete mix. Avoid adding material directly to cement and dry materials.
Retak-1 is compatible with all types of Portland cement, microsilica and slag.
If you need to use several concrete additives, be sure to contact Partak Concrete Technology.
storage and shelf life
Retak-1 is maintaned in closed packaging and away from direct rays of sun and ice situation.
in the case of above situation, the useful life of the product is 12 months from the date of production.
health and safety
there is not need for special actions but for observing safty actions, it is better to use protection gloves and eye glasses. In case of direct contact with skin or eyes, rinse immediately with water and see a doctor.
Please refer to the Safety Data Sheet (MSDS).
