Base Con Pc-8992

High-performance super plasticizer based on PCE (polycarboxylic ether) for concrete

DESCRIPTION

Base Con Pc-8992 is an admixture of a new generation based on modified polycarboxylic ether. The product has been primarily developed for applications in high performance concrete where the highest durability and performance is required. Base Con Pc-8992 is free of chloride & low alkali. It is compatible with all types of cements

RECOMMENDED USES
  • Production of Smart Dynamic concrete.
  • High performance concrete for durability.
  • High early and ultimate strength concrete
  • High workability without segregation or bleeding
  • Precast & Pre- stressed concrete.
  • Concrete containing pozzolans such as microsilica, GGBFS, PFA including high volume fly ash concrete.
FEATURES AND BENEFITS
  • Elimination of vibration and reduced labour cost in placing.
  • Marked increase in early & ultimate strengths
  • Higher E modulus
  • Improved adhesion to reinforcing and stressing steel
  • Lower permeability - increased durability.

Chemistry and mechanism of action

What differentiates Base Con Pc-8992 from the traditional superplasticisers is a new, unique mechanism of action that greatly improves the effectiveness of cement dispersion. Traditional superplasticizers based on melamine and naphthalene sulphonates are polymers which are absorbed by the cement granules. They wrap around the granules' surface areas at the very early stage of the concrete mixing process.

The sulphonic groups of the polymer chains increase the negative charge of the cement particle surface and disperse these particles by electrical repulsion. This electrostatic mechanism causes the cement paste to disperse and has the positive consequence of requiring less mixing water to obtain a given concrete workability.


PERFORMANCE TEST DATA
Aspect : Light brown liquid
Relative Density : 1.08 ± 0.01 at 25°C
pH : > 6 at 25°C
Chloride ion content : < 0.2%
TEST CERTIFICATION/APPROVALS

  • ASTM C494 Type G

  • EN 934-2 T3.1/3.2

  • IS 9103: 1999

DOSAGE

Optimum dosage of Base Con Pc-8992 should be determined with trial mixes. As a guide, a dosage range of 300ml to 1500ml per 100kg of cementitious material 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 BASE representative. For addition information on Base Con Pc-8992 admixture or on its use in developing concrete mixes with special performance characteristics, contact your local BASE representative.


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