SBR Latex Admixture — Styrene-Butadiene Rubber Latex — is a synthetic polymer emulsion widely used in the construction industry as an admixture for cement-based mortars and concrete. It significantly enhances the performance of mixes, particularly in terms of adhesion, flexibility, water resistance, and durability.
Key Features of SBR Latex Admixture:
Improved Adhesion: Enhances bond strength between cementitious materials and substrates (e.g., old concrete, brick, steel).
Water Resistance: Reduces permeability, making the mix suitable for waterproofing applications.
Flexibility & Crack Resistance: Increases flexibility, helping to prevent cracking due to thermal or structural movement.
Chemical Resistance: Improves resistance to salts, oils, and mild acids/alkalis.
Workability: Improves the handling and finish of mortars and screeds.
Typical Applications:
Repair mortars and concrete patching
Waterproofing slurries and coatings
Tile adhesives and grouts
Bonding slurries between old and new concrete
Flooring screeds and underlays
Usage Instructions (General):
SBR latex is usually added as a partial replacement for water in the mix, typically in the ratio of 1 part SBR to 1–2 parts water,
depending on the application.