Concrete retarder NX450

Concrete retarder is a liquid substance that, after adding to concrete, causes a delay in the setting time and slows down the progress of the hydration reaction.

Description

concrete retarder | Dexter

Concrete retarder is a liquid substance that, after adding to concrete, causes a delay in the setting time and slows down the progress of the hydration reaction.

This product is equal to the following standards:

ISIRI2930 – Table 9 ASTMC494 C494M TYPE B

Features of retarding concrete:
causing a delay in the capture time
Providing the possibility of concreting in tropical areas
The possibility of concreting in windy areas
Transporting concrete over long distances
Reducing the possibility of creating cold joints in massive concreting
Prevent surface cracks
Increasing the strength of concrete in the long term
Compatibility with all types of Portland cement
Concrete retarder applications:
Bulk concreting such as dam building
Making and transporting concrete over long distances far from concrete factories
Amount of concrete retarder consumption:

The amount of consumption based on the delay time in terms of hours and temperature is equal to the following table:

۲۱

۱۸ ۱۵ ۱۲ ۹ ۷ ۵

۳

→ hour delay

—————-

temperature ↓

۱

۰.۹ ۰.۷ ۰.۵ ۰.۳ ۰.۲ —- +۱۰

۱.۵

۱.۱ ۰.۸ ۰.۶ ۰.۴ ۰.۳ ۰.۱

+۱۵

۱.۸

۱.۴ ۱.۱ ۰.۸ ۰.۵ ۰.۴ ۰.۲ ۰.۱

+۲۰

۲

۱.۵ ۱ ۰.۶ ۰.۵ ۰.۳ ۰.۲

+۲۵

۲ ۱.۲ ۰.۸ ۰.۶ ۰.۴ ۰.۳

+۳۰

—- ۲ ۱.۳ ۰.۵

+۴۰

 

Method of using concrete retarder:

This product can be used by adding it to the ready-made concrete mix or adding it to batching during concrete making and after adding 2/3 of the mixing plan water.

Note: Never add to dry ingredients.

Concrete retarder safety tips:
Use gloves, glasses and work clothes during execution
This substance is not flammable
This material is not harmful to the environment
In case of accidental contact with the skin or eyes, it should be washed immediately with plenty of water
If swallowed, seek medical attention
Conditions of storage and packaging of concrete retarder:

Store at a temperature of +5 to +35 degrees Celsius, away from direct sunlight and frost. If stored in proper conditions and in the original packaging, it can be stored for up to one year.

Technical characteristics of concrete retarder:
Physical state: liquid
Color: transparent
Specific weight at 20 degrees Celsius: 1.09
Acidity: 5.9