Perma Plast

ASTM C 494 : Types A, B & D
IS : 9103-2007

Perma Plast is a water reducing super plasticizer for concrete. It is a product based on refined lignosulfonates.

Perma Plast


  1. To increase workability.
  2. To increase compressive strength.
  3. To affect cement economies.
  4. For hot weather concreting.


  1. In pre-stressed concrete.
  2. In areas of congested reinforcement where high workability is beneficial.
  3. In pre-cast concrete manufacturing.
  4. In concrete brick and block manufacturing.
  5. In hot weather concreting to extend workability.


  1. Increase workability – Significantly improves the workability therefore ease of placing.
  2. Improves the cohesive properties of the concrete helping to reduce segregation and bleeding.
  3. Reduces water demand – Allows water reduction in the region of 10% to be achieved while maintaining workability thereby Increasing strength, durability and impermeability.
  4. Enables economies in the mix designs to be achieved therefore saving cement.


Perma Plast should be added to the concrete mix during the mixing cycle at the same time as the water. Never add Perma Plast to dry cement.


Perma Plast is a powerful plasticiser which disperses and deflocculates the cement particles within a concrete mix. It can be used to improve workability without the addition of extra water or to allow reductions in free water content of the concrete mix.


Field trials should be conducted to determine the optimum addition rates of Perma Plast. A dosage range of 100 gms to 500 gms per 50 kgs of cement is recommended as an initial starting point.


Typical properties of Perma Plast are as follows:

Colour : Dark brown/black Liquid
Specific gravity : 1.12 at 25°C
Air Entrainment : 1% maximum dependent on grading of sand and water content.
Chloride Content : Nil
Nitrate Content : Nil
Freezing Point : 0°C. can be reconstituted if stirred after thawing
Flashpoint : None


A liquid admixture based upon refined napthalene formaldehyde and ligno sulphonate blends.


Over-dosage of Perma Plast will result in the following:

  1. Retardation of initial set.
  2. Increase in air entrainment.
  3. Increase in workability. Provided concrete is properly cured, the ultimate strength of the concrete will not be adversely affected and will generally be higher than that of normal concrete.


Perma Plast can be used with all types of Portland cement including Sulphate resisting. For use with other special cements, contact your nearest Perma technical Office, or distributor. Perma Plast should not be pre-mixed with other admixtures. If other admixtures are to be used in concrete containing Perma Plast they must be dispensed separately.


Perma Plast is not a health hazard or fire risk. Spillages should be washed immediately to avoid possibilities of slipping.


Perma Plast is available in 10 kg, 25 kg, 100 kg and 210 kg drum.


Perma Plast has a shelf life of 24 months if stored in manufacturer’s original packing.


PERMA warrants that all products are free from any defects of manufacture and comply with the specifications given in their respective technical data sheet. No warranty can be given as to the results of use because conditions of use, such as site conditions, surface preparations, workmanship, weather, structural issues and other factors are beyond the control of PERMA. Purchaser agrees to seek the advice of qualified professionals to carry out tests & take trials to determine the suitability of products for their intended purpose prior to full scale usage of PERMA products and assumes all risks.

The company does not assume any liability for unsatisfactory results, arising from the use of our products. Purchaser’s sole liability is limited to replacement of product or refund of the purchase price paid if any product proven defective. No other warranties, express or implied, shall apply including any warranty of merchantability or fitness for a particular purpose.
PERMA shall not be liable for any consequential damages arising from the use of our products for unsatisfactory results.

The information supplied in this datasheet is based on our experience through extensive research and is given in good faith in order to help prospective users. We reserve the right to update the information provided in our technical data sheet at any time without prior notice within the scope of technical progress or new developments.