THREE COMPONENT AND WATER BASED POLYURETHANE ADHESIVE FOR CONCRETE
Three component and water-based polyurethane adhesive for concrete is a high-performance bonding system designed for structural repairs, concrete reinforcement, floor applications, industrial surfaces, and high-strength construction bonding.
It combines polyurethane prepolymer, reactive hardener, and water-based dispersion, forming a durable, flexible, chemical-resistant adhesive layer.
What Is Three Component and Water Based Polyurethane Adhesive for Concrete
A multi-component polyurethane adhesive system that cures through a chemical reaction between isocyanate prepolymers, polyol resins, and water-based polymer dispersions, forming a strong elastomeric bonding matrix suitable for concrete substrates.
Description
The adhesive provides excellent adhesion, high flexibility, moisture tolerance, and durability on cement-based surfaces.
It is especially useful for repairing cracks, bonding concrete elements, leveling surfaces, or anchoring composite materials.
Definition
A reactive adhesive system consisting of:
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Component A: Polyurethane prepolymer (NCO-terminated)
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Component B: Water-based polymer dispersion
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Component C: Polyol or chain extender hardener
Together they form a chemical-curing, solvent-free, environmentally friendly adhesive.
Preparation
Components are mixed in a controlled sequence:
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Water-based dispersion is placed into a mixer.
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Polyurethane prepolymer is slowly added under agitation.
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Hardener (component C) is added last to initiate the curing reaction.
Manufacturing Process
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Prepolymer synthesis
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Dispersion preparation
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Hardener formulation
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Controlled mixing of the three components
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Degassing and packaging
Formula
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PU Prepolymer: 25–40%
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Waterborne Dispersion: 40–60%
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Polyol Hardener / Chain Extender: 5–15%
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Additives (anti-foaming, thickener, adhesion promoters): 1–5%
(Note: Exact percentages vary by manufacturer.)
Formulations
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Standard Grade: Balanced strength + flexibility
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High Elasticity Grade: Increased elongation for dynamic substrates
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High Strength Grade: Dense crosslinking for structural bonding
Properties
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Strong adhesion to concrete, mortar, stone
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Water-based and low-VOC
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Moisture-tolerant curing
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Chemical and abrasion resistance
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Flexible and crack-bridging
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Long pot-life, fast final cure
Applications
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Concrete crack repair
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Bonding precast concrete elements
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Industrial flooring systems
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Anchoring and leveling
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Composite-to-concrete bonding
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Repairing damaged surfaces
Usage
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Concrete surface must be clean and dry
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Mix components in correct ratio
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Apply with trowel or brush
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Allow curing under ambient conditions
Types
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Standard 3-component PU adhesive
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High-viscosity repair grade
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Low-viscosity penetration grade
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Fast-curing grade
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Flexible elastomeric grade
Advantages
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Eco-friendly (water-based, low VOC)
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High bonding strength
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Flexible and crack-bridging capability
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Excellent aging and chemical resistance
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Ideal for heavy-duty industrial and construction use
SUMMARY
Three-component and water-based polyurethane adhesive for concrete is a modern, high-strength, environmentally friendly bonding system widely used for construction and industrial applications.
Its combination of polyurethane prepolymer, waterborne dispersion, and reactive hardener provides strong adhesion, flexibility, chemical resistance, and long-term durability on concrete substrates.
