In construction applications, Styrene Butadiene Rubber (SBR) serves as a pivotal additive due to its versatile properties and wide-ranging benefits. As a synthetic polymer, SBR offers exceptional advantages when incorporated into various construction materials and mixtures.
What is SBR?
SBR is a synthetic rubber compound made by copolymerizing styrene and butadiene. It is available in liquid form and is often used as an additive in construction materials to enhance their performance. SBR can be used as a bonding agent, modifier, or coating in different construction applications and reduces shrinkage and cracking when repairing floor screeds. Also ideal as a bonding agent for new to old concrete.
Benefit of using SBR with cementitious based material
Enhanced Adhesion
: SBR improves the bond between cement and various substrates, such as concrete, masonry, and metal surfaces. This leads to better adhesion, ensuring that the cement-based material sticks securely to the substrate.
Increased Flexibility: Incorporating SBR into cement mixes increases the flexibility of the hardened material. This flexibility allows the material to withstand minor substrate movements without cracking or failing, making it ideal for applications where structural movement is expected.
Improved Durability: SBR enhances the durability of cement-based materials, making them more resistant to wear, abrasion, and weathering. This results in longer-lasting structures that require less maintenance over time.
Waterproofing Properties: SBR acts as a waterproofer when added to cement mixes, providing protection against moisture ingress and water penetration. This is particularly beneficial in applications where waterproofing is essential, such as basements, bathrooms, and exterior facades.
Crack Resistance: SBR helps to reduce the formation and propagation of cracks in cement-based materials. By distributing stress more evenly throughout the material, SBR helps to prevent cracks from forming, even under challenging conditions.
Enhanced Workability: SBR improves the workability of cement mixes, making them easier to mix, apply, and finish. This results in smoother, more uniform surfaces with fewer defects or imperfections.
Applications of SBR:
Repair and Rehabilitation:
SBR is commonly used in concrete repair and rehabilitation works. It is added to repair mortars, grouts, and overlays to improve their adhesion and durability.
Tile Adhesive and Grouts:
SBR is added to tile adhesives and grouts to enhance their bond strength, flexibility, and water resistance. This ensures long-lasting adhesion and prevents detachment of tiles.
Waterproofing:
SBR-based coatings and membranes are widely used for waterproofing applications. They are applied to roofs, basements, and other areas prone to water leakage to provide protection against moisture
Uniguard offers two types of SBR:
Admix SBR: Aqueous dispersion of Styrene-butadiene Rubber copolymer with 10% solids content, used as bonding agent and admixture improves the adhesion and cohesion of concrete & cement mixes, recommended for use at a dosage of 10 kg/m3.
Admix SBR Plus: Bonding agent and admixture from an aqueous dispersion of Styrene-butadiene Rubber copolymer with high solid, recommended for use at a dosage of 5 kg/m3.
With Uniguard's SBR solutions, you can maximize the benefits of SBR to enhance the durability and performance of your construction projects.
