Waterproof Concrete Plasticizer

Waterproof Concrete Plasticizer

Concrete Plasticizer – Waterproofing Agent
WPL25

High-Performance Concrete Plasticizer with Waterproofing Properties

Description

Waterproof Concrete Plasticizer is a dual-purpose concrete additive formulated with plasticizers and waterproofing agents. It enhances the workability and fluidity of concrete while significantly reducing permeability and water absorption. This plasticizer lowers the water-to-cement ratio, improving early-age strength and preventing aggregate segregation and bleeding. It typically reduces concrete water content by approximately 10%.

In general, waterproofing plasticizers serve multiple purposes in concrete applications. They reduce water demand, improve durability, and enhance the waterproofing properties of concrete.

Mechanism of Action

Upon mixing with water and cement, the molecules of this plasticizer—based on polynaphthalene sulfonate—form a charged film around cement particles. This electrostatic repulsion prevents particle agglomeration, increasing fluidity and workability. Additionally, the waterproofing agents in the formulation enhance aggregate cohesion, reducing concrete permeability.

Key Properties and Benefits

• Enhances workability and slump retention
• Improves cohesion and reduces permeability
• Increases compressive and flexural strength
• Enhances bond between aggregate particles
• Improves concrete durability and resistance to chemical attacks
• Prevents surface cracking
• Reduces water content by approximately 10%
• Minimizes equipment wear during placement
• Compatible with all types of Portland cement
• Facilitates pumpability and reduces pumping pressure
• Prevents carbonation in concrete

Applications

• Concrete structures requiring low permeability
• Construction of water channels and hydraulic structures
• Concrete with high reinforcement density
• Pre-stressed and post-tensioned concrete
• High-strength concrete applications
• Concrete structures exposed to aggressive environments
• Construction of reservoirs, pools, and wastewater treatment plants

Physical and Chemical Properties

Property	Specification
State	Liquid
Color	Brown
Specific Gravity	1.12 g/cm³
pH	~7
Chloride Content	Nil
Standards	ASTM C494, ISIRI 2930

 

Dosage

The recommended dosage varies based on environmental conditions, material composition, and required properties. Generally, the optimal dosage is between 1.5% to 2% of the cement weight. It is advised to conduct site trials to determine the precise dosage. Overdosing may adversely affect concrete properties; consult technical experts if necessary.

Method of Use

1. Pre-dilution: Mix the required amount of plasticizer with twice its volume of water.
2. Integration: Gradually add the diluted solution to the concrete mix during batching or in the truck mixer.
3. Mixing Time: Ensure at least 1 minute of mixing per cubic meter of concrete to achieve uniform dispersion.
4. Direct Addition: It can be added directly to ready-mix concrete before pouring.
5. Precaution: Do not add the product directly to dry cement.

Safety Precautions

• Non-toxic and non-hazardous under normal conditions.
• Avoid contact with eyes and skin; in case of contact, rinse immediately with plenty of water.
• If skin irritation occurs or if ingested accidentally, seek medical attention immediately.
• Use protective gloves, goggles, and a mask while handling the product.

Storage Conditions

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

Packaging

• 20-liter plastic jerry cans
• 220-liter drums
• 1000-liter IBC tanks