Product Data Sheet Show all documents

Sika® Plastiment® R 168

(former MasterPozzolith® R 168)

WATER REDUCING AND SET RETARDING

Sika® Plastiment® R 168 is a ready to use, liquid admixture for producing more uniform and predictable quality concrete. It reduces the quantity of mixing water to produce concrete of a given consistency, with greater economy, for a given strength.
The use of Sika® Plastiment® R 168 with concrete increases cohesion and reduces segregation. Placing and finishing characteristics are improved because this admixture also retards setting time.
Sika® Plastiment® R 168 admixture will not initiate or promote corrosion of reinforcing steel in concrete. The admixture does not contain intentionally added calcium chloride or chloride-based ingredients.

Sika® Plastiment® R 168 used at optimum dose modifies the performance of concrete to provide the following:

IN THE PLASTIC CONCRETE
• Reduced water content for a given workability
• Superior slump retention
• Controlled retardation – depending on the dose rate
• Improved workability, greater pumpability
• Reduced segregation

IN THE HARDENED CONCRETE
• Better finished appearance
• Increased strength
• Greater durability
Product Data Sheet Show all documents

Usage

Sika® Plastiment® R 168 is recommended for use in all types of concrete where retardation of set and improved performance is desired eg. plain, reinforced, precast or prestressed concrete especially when placing by pump and enhanced finishing is desired.
When used in conjunction with other admixtures, each admixture must be dispensed separately into the mix.  

Advantages

Sika® Plastiment® R 168 used at optimum dose modifies the performance of concrete to provide the following:

IN THE PLASTIC CONCRETE
• Reduced water content for a given workability
• Superior slump retention
• Controlled retardation – depending on the dose rate
• Improved workability, greater pumpability
• Reduced segregation

IN THE HARDENED CONCRETE
• Better finished appearance
• Increased strength
• Greater durability

Packaging

205 L drum

Product Details

Product Information

Shelf Life

12 months

Storage Conditions

Stored at temperatures above 5°C, in tightly sealed original drums. If found to be frozen, thaw it and reconstitute by stirring.

 

Application

Application Information

Dispensing

Sika® Plastiment® R 168 can be added into the mixing water or can be added to the wet concrete after the mixing water have been added. The addition of Sika® Plastiment® R 168 to a dry concrete mix is not recommended. A separate dispenser or feed line must be used.
Consumption

Recommended Dosage

Sika® Plastiment® R 168 is normally used at a dosage rate of 300 – 500ml/100kg of cementitious material. Other dosages may also be used depending on the specific work conditions.
Setting time is influenced by the chemical and physical composition of the basic ingredients of the concrete, temperature of the concrete and climatic conditions. Trial mix should be carried out with actual jobsite materials to determine the optimum dosage required for a specific setting time and given strength.

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