Polymer Modification for Asphalt and Bitumen Systems

Asphalt materials are exposed to repeated traffic loading, temperature variations, moisture and long-term environmental conditions. The performance of the binder system is therefore an important consideration when developing asphalt and pavement materials.

High Solid SBR Latex provides a water-based polymer option for selected asphalt modification and bitumen emulsion systems. With a higher polymer solids content, it can help formulators introduce SBR polymer into the formulation while controlling the amount of water carried by the latex.

SBR Latex in Asphalt Modification

SBR latex is a synthetic rubber latex with flexibility, elasticity and film-forming characteristics. When incorporated into a suitable bitumen or asphalt formulation, SBR polymer can modify the mechanical behavior of the binder.

Depending on the formulation and application conditions, SBR latex modification may contribute to:

• Improved flexibility of the modified binder
• Elastic recovery after repeated loading
• Improved resistance to deformation
• Enhanced crack resistance under selected conditions
• Improved cohesion of the polymer-modified binder
• Flexibility in water-based formulation design

The actual performance depends on the SBR grade, polymer dosage, bitumen characteristics, emulsion system, aggregate structure, mixing conditions and curing process.

Why Consider High Solid SBR Latex?

Compared with conventional SBR latex grades, high solid SBR latex contains a higher proportion of polymer solids.

This characteristic can be useful for formulations where a higher polymer concentration is required.

Potential formulation considerations include:

Higher polymer solids
More polymer solids can be introduced with a lower amount of latex water.

Water-based processing
SBR latex provides a convenient water-based route for incorporating synthetic rubber into selected bitumen systems.

Formulation flexibility
Different SBR characteristics, such as solids content, Tg, viscosity and particle properties, can be selected according to the target formulation.

Polymer modification
SBR latex can be evaluated for modifying the flexibility and mechanical behavior of selected asphalt and bitumen systems.

Applications

High Solid SBR Latex can be evaluated in a range of construction and asphalt-related applications, including:

• Polymer-modified bitumen emulsions
• Asphalt modification
• Road and pavement materials
• Waterproofing systems
• Bitumen-based coatings
• Construction materials requiring polymer modification

For asphalt applications, the appropriate SBR grade should be selected according to the bitumen type, target polymer dosage, formulation stability and required final properties.

Selecting the Right SBR Latex

The polymer solids content is only one factor when selecting SBR latex for asphalt modification.

Other parameters may include:

• Total solids content
• Glass transition temperature (Tg)
• Latex viscosity
• Particle size
• pH
• Mechanical stability
• Compatibility with the bitumen or emulsion system
• Storage stability

Laboratory evaluation is recommended to determine the appropriate grade and dosage for each specific formulation.

High Solid SBR Latex from RUICO

RUICO develops and supplies SBR latex and High Solid SBR Latex for construction, asphalt, waterproofing and other polymer-modified applications.

Our technical team can work with customers to evaluate SBR latex according to their formulation requirements, processing conditions and target application.

For technical specifications, samples or application discussions:

Email: [email protected]