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PROCESS TECHNOLOGIES

SUPERPLASTICIZERS

POLYCARBOXYLATES

HIGH PERFORMANCE PRODUCTS FOR WORLD CLASS PROJECTS

POLYCARBOXYLATES FOR SUPERPLASTICIZER FORMULATIONS FOR READY MIX APPLICATIONS

Polycarboxylates are high performance products for ready mix application produced from Methoxy Polyethyle Glycols (MPEGs).
ATEC has its own in-house Process Technology for Polycarboxylates. Minimum economic plant size is (7000-9000 Mt/Year). Two special Polycarboxylate grades have been developed by ATEC which are to be appropriately blended to achieve desired slump retention for specific cement compositions.

Characteristics

ATPOLY-40 G

ATPOLY-40 s

Solid content

38-40%

38-40%

Density

1,06-1,12

1,06-1,12

pH

6,0-7,0

6,0-7,0

Color

Clear amber

Clear amber

Products can be tailor made to suit any bogue composition of white and grey cements etc.

POLYCARBOXYLATES PROCESS DIAGRAM

DOSAGE

Usage of ATPOLY – 40 G and ATPOLY – 40 S create a significant slump increase over time. A mixture of the two products can yield an optimal performance for any conditions. A mixture with 55% to 100% of ATPOLY Series is suggested.
ATPOLY – 40 G and ATPOLY – 40 S mixtures are normally dosed at 65 – 130 g per 100 kg (1 – 20 oz per 100 lbs) of cement. Other dosages may be required depending on specific conditions

TYPICAL PROPERTIES

Chemical Classification

Modified Polycarboxylate Sodium Salt

Ionic Nature

Anionic

Chlorides (ppm)

Typical value <25

Viscosity @ 25° C (cps)

Typical range 150 – 250

Solubility

Dilutes rapidly in hard and soft water

POLYCARBOXYLATES PROCESS DIAGRAM

CHEMICAL STRUCTURE OF POLYCARBOXYLATE ADMIXTURE

CONCRETE WORKABILITY

ATPOLY Series, mixed in the proper ratio will keep fluidified concrete workable for approximately 2 hours at 20°C (68° F). The duration of workability depends not only on the temperature, but also on the type and brand of cement, the nature of aggregates, the method of mixing and the method of transportation. When ATPOLY Series is added at normal dosages, it does not significantly affect the concrete’s heat of hydration.