Concrete Super Plasticizer

Concrete Super Plasticizer – Retarder (PL55)

Description

Concrete Super Plasticizer – Retarder is a liquid additive based on polynaphthalene sulfonate that improves concrete workability while significantly reducing the water-to-cement ratio. Additionally, it delays the initial setting time of concrete, effectively compensating for the negative effects of rapid setting in high temperatures. This product is particularly designed for mass concrete pouring and hot weather conditions, preventing segregation and bleeding. It can reduce water consumption by approximately 10-15%, optimizing concrete mixtures, reducing Portland cement usage, and contributing to cost savings and environmental benefits.

Mechanism of Action

Upon mixing with water and cement, the molecules of this super plasticizer form a charged layer around cement particles, causing them to repel each other and enhancing fluidity. Furthermore, naphthalene sulfonate inhibits the dissolution of ions such as aluminates, which have the highest solubility rate during the hydration process. Special retardation agents included in the formulation help control the setting time.

Key Features & Benefits

• Extends the workability period of concrete.
• Prevents cold joints in mass concrete pours.
• Reduces equipment wear during concrete placement.
• Minimizes workability loss during long pours.
• Enhances cohesion and reduces permeability.
• Prevents shrinkage and contraction of concrete.
• Maintains long-term compressive strength gain.
• Reduces creep in concrete.
• Lowers the water-to-cement ratio by 10-15%.
• Improves both compressive and flexural strength.
• Compatible with all types of Portland cement.
• Facilitates easy pumping and placement.

Applications

• Suitable for all structural concrete elements.
• Ideal for high-performance and durable concrete production.
• Suitable for reinforced concrete with high rebar density.
• Allows for long-distance concrete transportation.
• Enables the use of crushed aggregates in concrete.
• Applicable in prestressed and post-tensioned systems.
• Essential for mass concrete pours.
• Compatible with slipform and moving formwork applications.
• Suitable for hot weather concreting.

Physical & Chemical Properties

Property	Value
Appearance	Liquid
Color	Dark brown
Specific Gravity	1.12 g/cm³
Chloride Content	None
Compliance	ASTM C494

Dosage & Usage

• The recommended dosage ranges from 1% to 1.5% of the cement weight.
• The precise dosage should be determined through laboratory trials, considering environmental conditions and aggregate types.
• Overdosing may cause excessive retardation, potentially weakening the concrete.
• The additive should be pre-diluted with twice its volume of water before adding it to the concrete mix.
• It can be added to the batching system or directly into the truck mixer.
• Avoid direct contact with dry cement.

Storage & Shelf Life

• Shelf Life: 12 months in original packaging.
• Storage Conditions: Store in a dry place, away from direct sunlight, extreme heat, and frost.
• Optimal Storage Temperature: +10°C to +30°C.

Packaging

• 20-liter gallon
• 220-liter drum
• 1000-liter IBC tank

Health & Safety

• Not classified as toxic, hazardous, or flammable.
• Avoid direct skin and eye contact; rinse thoroughly with water if exposed.
• Use protective gloves, goggles, and a mask during application.