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Concrete Superplasticizers-Plastit® SPN265

Plastit SPN265 is a chloride free workability retention admixture based on selected polymer modified napthalene sulphonate dispersives. It is supplied as a brown solution which instantly disperses in water. Plastit SPN265 disperses the fine particles in the concrete mix, enabling the water content of the concrete to perform more effectively. The increased workability, cohesion and retardation minimizes loss of workability

 Good slump retention
 Suitable for ready mix & hot weather concreting
 Makes possible major reductions in water:cement ratio which allow the production of high strength concrete without excessive cement contents
 Increased work ability levels are maintained for longer than with ordinary sulphonated melamine admixtures
Improved cohesion and particle dispersion minimizes segregation and bleeding and improves pump ability
 Chloride free, safe for use in prestressed and reinforced concrete

 Increases work ability without extra water, reducing placing time and costs
 Gives increased working life to fresh concrete. - Improves cohesion, minimizing segregation and improving surface finish
 Aids pumping by improving cohesion and reducing work ability loss
 Allows a reduction in water:cement ratio, enhancing durability by producing low permeability concrete with reduced shrinkage cracking potential. - Chloride free, safe for use in prestressed and reinforced concrete
 Can be used with concrete containing microsilica and other cement replacements

The optimum dosage Plastit SPN265 to meet specific requirements should always be determined by trials using the materials and conditions that will be experienced in use. The normal dosage range is 0.4 to 1.5 kg/100 kg of cementitious material, including PFA, GGBFS and microsilica.

Appearance Brown Liquid
Specific gravity 1.16 gr/cm3 at 20°C
Chloride Nil to BS5075
Air entrainment Typically less than 2% additional air is entrained at normal dosages.
Alkali content Typically less than 55.0 g. Na2o equivalent/litre of admixture. A fact sheet on this subject is available.

Packaging
 Plastit SPN265 is available in 20 kg containers and 240 kg drums 
Storage
 Plastit SPN265 has a minimum shelf life of 12 months provided the temperature is kept within the range of 5°C to 35°C. Should the temperature of the product fall outside this range then contact CAPCO for advice. Freezing point: Approximately -4°C