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Concrete Superplasticizers-Plastit® SPNA

Plastit SPNA supplied as a brown liquid, is selected sulphonated napthalene polymers, which when added to cementitious mixes, accelerates hydration and enables the water content to perform more efficiently

Allows continuous placing of concrete at low temperatures - High range water reducing property allows the production of high quality concrete without excessive cement contentsensures improved durability. - Gives anti-frost protection by allowing water reducing thus accelerating cement hydration process - Allows earlier release from precast moulds
Allows reduction in mixing water with no loss of work ability - Increased density and compressive strength
 Chloride free, safe for use in precast, prestressed and reinforced concrete

 As an accelerator for use in concrete and cement mortars to promote rapid strength development for early stripping of form work, and to assist in resisting of frost attack, ideal for cold winter working conditions
 Specifically developed for use in high quality concrete for work ability retention at low water content
 Provides good pumpable concrete

The optimum dosage of Plastit SPNA to meet specific requirements should always be determined by trial mixes using the materials and conditions that will be experienced in use. For normal concrete a dosage between 0.4% to 2.0% by weight of cement may be used

Appearance Brown Liquid
Specific gravity 1.18 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 SPNA is available in 20 kg containers and 240 kg drums.
 Storage
 Plastit SPNA 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 -2°C