Retarding Admixture

Retarding Admixture

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It is used to improve the effectiveness of the water content of a concrete mixture. Our company has sculpted a remarkable place in the market as a reputed organization engaged in offering Retarding Admixture. Our expert workforce uses quality grade additives and cement to process this admixture. Offered admixture extends the setting time of concrete, extending working times and minimizing delay problems. Retarding Admixture is suitable for use in mixtures having fly ash and also to improve the working life of semi dry concrete mixes.


  • Improves compressive strengths
  • Chloride free
  • Water reducing admixture

Retarding water reducing admixture


ยท         To improve the effectiveness of the water content of a concrete mix,

ยท         To extend the setting time of concrete, extending working times and minimizing delay problems,

ยท         To extend the working life of semi-dry concrete screeds

ยท         Particularly suitable for use in mixes having fly ash and also improve the working life of semi dry concrete mixes, specifically RCC (Roller Compacted Concrete) type of mixes. 


ยท         Water reduction significantly improves compressive strengths at all ages and enhances durability through the production of low permeability concrete

ยท         Controlled retardation extends working life and stiffening time for ease of construction

ยท         Control of stiffening improves slip forming and assists in preventing the formation of cold joints in large pours

ยท         Allows specified strength grades to be met at reduced cement content or increased workability

ยท         Chloride free, safe for use in prestressed and reinforced concrete


PLASTCONE R is a chloride free water reducing admixture based on selected hydroxycarboxylic materials. It is supplied as a brown solution which instantly disperses in water. PLASTCONE R disperses the fine particles in the concrete mix, enabling the water content of the concrete to perform more effectively. The initial hydration of the cement is also delayed, resulting in a delay in the setting time of the concrete with no adverse effect on subsequent stiffening and strength gain. 

Typical dosage:

The optimum dosage of PLASTCONE R to meet specific requirements should always be determined by trials using the materials and conditions that will be experienced in use. This allows the optimization of admixture dosage and mix design and provides a complete assessment of the concrete mix. A starting point for such trials is to use a dosage within the normal typical range of 0.25 to 0.60 liters / 100 kg of cementitious material, including PFA, GGBFS or micro silica. 

Use at other dosages:

Dosages outside the typical range quoted above may be used if necessary and suitable to meet particular mix requirements, provided that adequate supervision is available. Compliance with requirements must be accessed through trial mixes. REDWOP shall be contacted for advice in these cases. 


ยท         Appearance: Brown liquid

ยท         Specific gravity: Typically 1.250 - 1.270 at 270C

ยท         Chloride content: Nil to IS:456

ยท         Air entrainment: Typically slightly less air will be entrained than in a normal concrete mix.

ยท         Alkali content: Typically less than 55.0g Na2O equivalent /liter of admixture.