Overview
Polyester concrete adhesive is a fast-curing, high-strength bonding material used for repairing cracks, anchoring bolts, filling gaps, and bonding concrete, stone, and construction elements. It is based on unsaturated polyester resin, mineral fillers, reactive diluents, and peroxide hardeners.
What Is Polyester Concrete Adhesive
It is a two-component adhesive system consisting of polyester resin + catalyst, designed to provide strong adhesion on concrete and masonry surfaces with excellent mechanical resistance.
Definition
A polymer-modified structural adhesive produced by combining unsaturated polyester resin with fillers, plasticizers, inhibitors, and peroxide hardeners.
Meaning
A durable concrete repair and bonding adhesive offering fast curing, chemical resistance, and high compressive strength.
Ingredients
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Unsaturated polyester resin
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Styrene monomer (reactive diluent)
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Calcium carbonate / quartz powder (fillers)
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Fumed silica (thickener)
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Plasticizer
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Cobalt octoate (accelerator)
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MEKP hardener
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Pigments (optional)
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Antishrink additives (optional)
Making Procedure
Step 1 — Resin Phase Preparation
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Charge polyester resin into a mixing tank.
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Add styrene slowly to adjust viscosity.
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Add accelerator (cobalt octoate) under slow stirring.
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Mix until homogeneous.
Step 2 — Addition of Fillers
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Add calcium carbonate or quartz powder gradually.
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Adjust consistency with fumed silica.
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Continue mixing until a smooth paste forms.
Step 3 — Additives
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Add plasticizer and pigments if required.
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Mix until the compound is uniform.
Step 4 — Finalization
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Fill into containers without adding MEKP.
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MEKP hardener is supplied separately as component B.
Step 5 — Application
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Mix the polyester adhesive with MEKP just before use.
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Apply onto clean concrete surfaces.
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Allow polymerization and curing.
Properties
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High mechanical strength
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Excellent adhesion on mineral surfaces
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Good chemical resistance
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Fast curing
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Gap-filling capability
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Dimensional stability
Applications
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Concrete crack repair
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Bonding prefabricated concrete parts
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Anchoring rebars and bolts
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Leveling and filling cavities
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Stone and marble bonding
Advantages
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Fast curing
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Easy to apply
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High load-bearing capacity
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Economical raw materials
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Suitable for structural repair
Summary
Polyester concrete adhesive is a two-component, fast-curing structural adhesive formulated from polyester resin, fillers, and MEKP hardener. It provides strong adhesion to concrete and stone, making it ideal for repair, bonding, and anchoring tasks. Its production involves preparing a resin phase, adding fillers and modifiers, and packaging with a separate hardener.
