PRi PLASTISIZER

• Concrete containing Silica fume/ Metakaolin
• Congested/complex reinforced sections
• Long-distance transporting
• Low water/binder ratio mixes
• Mixes requiring >20% water reductions
• Pre-cast concrete production
• Pumped concrete
• Ready mixed concrete

• Better compaction and finishing by acting as viscosity modifier
• Breaks the salinity of water by converting them into salt crystals
• Chloride free
• Extended setting with longer work ability
• Good dispersion even in mixes with high fines High work ability for longer periods
• Higher cohesion
• Higher ultimate strengths
• Increased ease in finishing concrete
• Increases extra bonding strength
• Lower pumping pressure
• Lowers cement content for increase in specified strength, work ability & durability
• Reduce risk of honey combing
• Reduce risk of shrinkage cracks due to heat of hydration
• Reduced permeability
• Reduced thermal peaks
• Reduced water content for a given work ability
• Reduces the risk of rusting of reinforcement by breaking the chain of rust electrons
• Resistance to segregation and bleeding even at high work ability

Standards
ASTM C-494 Type “G”
EN 934-2: T11.1/11.2
IS 9103

The high-range, retarding, super plasticising admixture for concrete shall be PRi Plasticizer, a sulphonated naphthalene polymer based formulation having slump retaining capabilities. The product shall comply with IS: 9103 and shall be of type “G” when tested to ASTMC-494. The product shall have density of 1.19 at 25°C.

PRi Plasticizer is a ready-to-use liquid which is dispensed into the concrete together with the mixing water. The plasticising effect and water reduction are higher if the admixture is added to the damp concrete after 509% to 70% of the mixing water has been added.
The addition of PRi Plasticizer to dry aggregate or cement is not recommended.

Optimum dosage of PRi Plasticizer should be determined with trial mixes. As a guide, a dosage range of 250 ml to 850 ml per 50 kg of bag of portland cement is normally recommended. Because of variations in concrete materials, job site conditions and/or applications, dosages outside of the recommended range may be required. In such cases, contact your local PRiBOND representative. For addition information on PRi Plasticizer or on its use in developing concrete mixes with special performance characteristics, contact your local PRiBOND representative

A severe over-dosage of PRi Plasticizer can result in the following:

• Long extension of initial and final set.
• Increase in air entrainment.
• Bleed/segregation of mix, quick loss of work ability
• Increased plastic shrinkage

A slight overdosing may not adversely affect the ultimate strength of the concrete and can achieve higher strengths than normal concrete, provided it is properly compacted and cured. Due allowance should be made for the effect of fluid concrete pressure on form work, and stripping times should be monitored. In the event of over dosage, consult your local PRiBOND representative immediately.

Aspect                                                                                         Dark brown free flowing liquid

Relative Density                                                                        1.19 ± 0.02 at 25°C

PRi Plasticizer is compatible with most admixtures used in the production of quality concrete including normal, other mid-range and high-range water-reducing admixtures, air entertainers, accelerators, retarders, extended set-control admixtures, corrosion inhibitors, and shrinkage reducers. It is also compatible with slag and pozzolans such as fly ash, metakaolin and silica fume.

PRi Plasticizer admixture will neither initiate nor promote corrosion of reinforcing steel embedded in concrete, prestressed concrete or concrete placed on galvanized steel floor and roof systems. Neither calcium chloride nor any calcium chloride-based ingredients are used in the manufacture of PRi Plasticizer. In all concrete application, PRi Plasticizer will conform to the most stringent or minimum chloride ion limits currently suggested by construction industry standards and practices.

PRi Plasticizer ensures that rheoplastic concrete remains workable in excess of 3 hours at +25°C. Workability loss is dependent on temperature, and on the type of cement, the nature of aggregates, the method of transport and initial work ability.
It is strongly recommended that concrete should be properly cured particularly in hot, windy and dry climates.

As with all chemical products, care should be taken during use and storage to avoid contact with eyes, mouth, skin and foodstuffs (which can also be tainted with vapour until product fully cured or dried).

• Treat splashes to eyes and skin immediately.
• If accidentally ingested, seek immediate medical attention.
• Keep away from children and animals.
• Reseal containers after use.
• Do not reuse containers for storage of consumable item.

For further information refer to the material safety data sheet. MSDS available on demand or on PRiBOND CEMENT PRODUCTS web site.