Polydos EG 465-K

High-Performance Superplasticizer Concrete Admixture

Standard
Ministry of Public Works Specification No: 04.613/1-A3
TS EN 934-2 Tables 3.1 and 3.2: High-range water reducing / superplasticizer concrete admixture

Description
Polydos® EG 450-K is a new-generation, high-performance superplasticizer concrete admixture based on polycarboxylate, which can self-compact in narrow and deep sections with high reinforcement, without requiring internal or external vibration. While maintaining this self-compaction feature, it prevents issues such as segregation and bleeding, and can retain cohesion effectively. It has excellent flowability and penetrability properties.

Areas of Use

• In all high-quality concretes where high strength and low water/cement ratio are desired

• In the production of prestressed concrete

• In concrete for mass casting

• In structural elements requiring complex and detailed molds with various geometries

• In construction sites where quick form removal is required, in precast and prefabricated concrete production

• In concrete where early high strength is desired under cold climate conditions

• In the production of Self-Compacting Concrete (SCC)

Features / Advantages

• Provides significant early high-strength development

• Reduces mixing water significantly in concrete that requires a high degree of water reduction (25–35%)

• Prevents rapid slump loss in concrete

• Ensures long-term workability retention

• Imparts self-compacting properties to concrete

• Provides high unit weight and strength potential

• Results in low-void, smooth-surfaced, and low-permeability concrete

• Reduces curing time and temperature in precast production, providing energy savings

• Eliminates the risk of segregation

• Reduces the rate of carbonation and improves shrinkage and creep behavior

• Enhances freeze-thaw resistance of concrete

• Enables concrete pumping over long distances

• Eliminates the need for vibration, reducing noise pollution

Dosage
For flowable and self-compacting concretes, it is recommended to use between 0.4 – 1.8 kg per 100 kg of binder (cement – microsilica – fly ash).
The admixture dosage may vary depending on aggregate properties, concrete class, water/cement ratio, water quality, and ambient temperature. Therefore, trial mixes in the laboratory are strongly recommended.
During consistency adjustments, the admixture’s high water-reducing effect must be considered, and excess water should not be added to the mix.

Technical Specifications