Description

Typical Applications:
• Pumped concrete
• Self compacting concrete
• High Grade concrete (M45 and Above)
• Concrete requiring long workability and Long retention

Action
CON PROOF PC is differentiated from conventional superplasticisers in that it is based on a unique polycarboxylate ether polymer with long lateral chains. Conventional superplasticisers, such as those based on sulphonated melamine and naphthalene formaldehyde condensates, at the time of mixing, get adsorbed onto the surface of the cement particles. This adsorption takes place at a very early stage in the hydration process. The sulphonic groups of the polymer chains increase the negative charge on the surface of the cement particle and dispersion of the cement occurs by electrostatic repulsion.
The long lateral chains of CON PROOF PC greatly improve cement dispersion. At the start of the mixing process the same electrostatic dispersion occurs as described previously but the presence of the lateral chains, linked to the polymer backbone, generate a stearic hindrance that stabilises the cement particles capacity to separate and disperse. This mechanism provides flow-able concrete with greatly reduced water demand. The excellent dispersion properties of CON PROOF PC make it the ideal admixture for precast concrete where low water cement ratios are required. This pr required. This property allows the production of very high early and high ultimate strength concrete with minimal voids and therefore optimum density. Due to the strength development characteristics, the elimination or reduction of steam curing in precast works may be considered as an economical option. With high workability without segregation or bleeding, less vibration is required.

ADVANTAGES 
High water reduction:
Excellent early and ultimate strengths. Possibility of elimination of steam curing. Less permeable, highly durable concrete.

High flow-ability:
Ease of placing and compaction. Less vibration required even in case of steel reinforcement congestion. Less workmanship required.

Non retarding:
Faster turn around of forms and shorter stripping times.

Superior workability:
Improves concrete finish; excellent surface appearance and texture.

Reduced slump loss:
• No re-tempering.
• Ease of delivery to point of placement.
• Low shrinkage and creep.
• Improves dimensional stability.
• Reduces risk of cracks.
• Superior cohesion.
• Ease of pumping.
• High elastic modulus.
• Superior load bearing capacity.
• Minimal bleed water.
• Excellent concrete quality.

Effects of overdosing
Over dosage may cause delay in the setting time.

Dispensing
CON PROOF PC is a ready-to-use admixture that is added to the concrete the time of batching. The maximum effect is achieved when the CON PROOF PC is added after the addition of 50 to 70% of the water. CON PROOF PC must not be added to the dry materials. A separate dispenser and feed line must be used.

Packaging
5 kg, 20 kg, 50 kg, 200 kg

Shelf life
CON PROOF PC can be stored for 6 months if stored at temperatures above 5ºC, in tightly sealed original drums. If found to be frozen, thaw it and reconstitute by stirring.

Precautions
Health: CON PROOF PC does not contain any hazardous substances requiring labeling. It is safe for use with standard precautions followed in the construction industry, such as use of hand gloves, safety goggles, etc. For detailed Health, Safety and Environmental Recommendations, please consult and follow all instructions in the product Material Safety Data Sheet.