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  • Polymer Modified Asphalt

    Today’s increasing loads, greater traffic volume and the need for better, longer-lasting roads demand better service from paving materials. Asphalts modified with ULTRAPAVE® SBR Latex Polymers offer the best method of improving binders for highway, street and airport paving and maintenance projects.

    ULTRAPAVE® SBR Latex Polymers were created specifically for modifying asphalt binders. ULTRAPAVE® SBR easily blends with the asphalt to form a homogenous reinforced composite. ULTRAPAVE® SBR Polymers provide:

     

     

    • Optimized visco-elastic properties
      • Increased resistance to rutting and shoving
      • Increased resistance to low temperature cracking
      • Increased resistance to load-associated fatigue cracking
      • Reduced temperature susceptibility
      • Reduced reflective cracking
    • Minimized aging effects
    • Reduced stripping and raveling

    PROPERTIES OF ULTRAPAVE® SBR LATEX POLYMERS

    ULTRAPAVE® SBR Latex Polymers contain emulsion polymerized random copolymers of styrene and butadiene in a water-based system. In latex form, the SBR particles are extremely small (averaging .5 microns), exposing a very high surface area to the asphalt for complete mixing. As a result, the physical dispersion of the polymer particles is rapid and thorough.

    ANIONIC SBR LATEX POLYMERS
    (For Polymer Modified Asphalt and Anionic Polymer Modified Asphalt Emulsion Applications)

    Product UP 70 UP 72 UP 74 UP 76 UP 7289
    % Solids Content,(+/- 2.0) 70.0 70.0 70.0 70.0 70.0
    pH, (+/- 0.5) 10.0 10.0 10.0 10.0 10.0
    Viscosity, Brookfield 1500 1500 1500 1300 1600
    Monomer Ratio,(Styrene/Butadiene) 24/76 24/76 24/76 24/76 24/76

    (**Values are typical and not meant to be specifications.)

     

    Heat and mechanical agitation with time produce a homogenous blend of polymer in the asphalt. As the latex is added, the polymer particles swell from the heat and solvating effects of the resins and oils in the asphalt. A micro-network forms with the polymer producing enhanced rheological properties.

    PERFORMANCE-BASED BINDER SPECIFICATION TESTING

    With the implementation of Superpave, a product of the Strategic Highway Research Program (SHRP), the use of rheological engineering properties to describe asphalt cement performance has become essential. ULTRAPAVE® has played a major role in the testing and understanding of these specifications. With over 1,000 different binder systems characterized, the effect of SBR Latex Polymers on different asphalt binders is well understood. Presentations have been made to numerous Departments of Transportation, contractors and asphalt suppliers to assist these groups with understanding the specifications and use of SBR Latex Polymers to enhance the asphalt’s properties.

    The Superpave binder (AASHTO MP1) performance grade requirements provide the materials engineer with better guidelines for creating the optimum polymer-modified asphalt cement. The extensive testing capabilities of ULTRAPAVE® are available to assist the customer in developing the best system. A wide range of SBR Latex Polymers can be used in unique formulations with different asphalt cements to produce the ideal performance grade.

    RESISTANCE TO HIGH TEMPERATURE PERMANENT DEFORMATION

    Although the binder is not the primary cause of rutting and shoving in asphalt concrete pavements, it does play a significant role. The use of ULTRAPAVE® SBR Latex Polymers helps reduce the frequency and severity of permanent deformation. ULTRAPAVE® does this by increasing the elastic nature of the binder at high temperatures. The increased elasticity of the binder allows the system to recover more readily from deformations than unmodified systems. For example, the addition of SBR Latex can significantly increase the high temperature stiffness (G*/Sin Delta) over the same unmodified system.

    LOW TEMPERATURE THERMAL CRACKING

    One of the most beneficial aspects of polymer modification is the reduction in the modified asphalt’s low temperature stiffness. Extensive laboratory testing has shown that ULTRAPAVE® SBR Latex Polymers can reduce the low temperature stiffness greatly reducing the chances of thermal cracking. Tests performed on mixtures also show that the temperature where thermal stress exceeds the tensile strength of the mixture is significantly lower (15 ° C) for SBR Latex modified mixtures as compared to unmodified mixtures.

    RESISTANCE TO SHORT AND LONG TERM AGING

    The addition of ULTRAPAVE® SBR reduces the thermal and oxidative aging effects which occur in the asphalt cement. The SBR modified binder shows an improvement in properties over unmodified asphalt. With the incorporation of the Pressure Aging Vessel, estimates of the long-term aging properties can be made. SBR Latex Polymers show dramatically lower long-term aging, which emphasizes the durability of the binder. The reduction in aging effects greatly increases the life of the pavement and, ultimately, reduces the life cycle cost of the pavement structure.

    TEMPERATURE SUSCEPTIBILITY

    One of the advantages of using SBR Latex Polymers is the reduction in the temperature susceptibility. At high temperatures, the modified binder shows much higher stiffness. Modification ensures high flexibility at low temperatures and greater visco-elasticity at high temperatures.

    RESISTANCE TO STRIPPING AND RAVELING

    Engineers and agency personnel have found that using SBR Latex Polymers for modified asphalt projects reduces the tendency of the binder to strip from problem aggregates. This finding is supported by extensive lab testing and limited field evaluations of new latex polymers.

    CUSTOMER SUPPORT – BINDER DESIGN OPTIMIZATION

    The ULTRAPAVE® team has a complete Superpave binder laboratory to perform testing on asphalt binders. ULTRAPAVE® personnel will develop the optimum binder for your application by maximizing the performance grade for that particular system. It is the belief of ULTRAPAVE® that each binder can be engineered with the appropriate SBR Latex Polymers to meet desired properties. Our database, with over 2,000 entries, attests to our experience with different source asphalts supplied by asphalt suppliers and Departments of Transportation. ULTRAPAVE® presentations on the incorporation properties and performance of SBR Latex Polymers are available to user agencies.

    These presentations have been very useful in understanding the Superpave performance grade specification and the enhanced properties of SBR Latex Polymers.

    SBR LATEX POLYMERS SPECIFIED IN AIRPORT PAVEMENTS

    Many states routinely use SBR Latex Polymers as additives in hot-mix asphalt pavements for roads and airports. Airports use them to help prevent thermal cracking, stripping and reflective cracking. Airport authorities noted that the use of SBR Latex allowed more binder in the mixture thus increasing durability. It was also noted that successful porous friction courses were attained with SBR Latex Polymers.

    METHODS OF MODIFICATION

    Another advantage of using SBR Latex Polymers as an asphalt modifier is that they can be added to any stage of the paving chain – from the refinery to the on-site job location. Major changes in technique are not required.

    ASPHALT CEMENTS

    ULTRAPAVE® can be added at the terminal, refinery, or at the asphalt plant through batch or drum mixers. Call your ULTRAPAVE® representative for specific information on quantities and methods of addition.

    A COST-EFFECTIVE WAY TO PROLONG PAVEMENT LIFE

    Blend ULTRAPAVE® Latex Polymers with asphalt paving materials for longer-lasting highways and lower maintenance costs. Only small amounts of ULTRAPAVE® are required making the improvements extremely cost effective.

  • Polymer Modified Asphalt Emulsion

    SBR LATEX POLYMERS FOR MODIFICATION OF ASPHALT EMULSIONS

    SBR latex polymers are ideally suited for use as polymer modifiers for asphalt emulsion since they are also water-based emulsions. These polymer emulsions are available in anionic or cationic compatible forms with variations of each type available for improvements in properties such as elastic recovery, torsional recovery, toughness and tenacity, and softening point.  The liquid (water-based) form of SBR latex polymers permits customizing of the product for specific applications.

    The ULTRAPAVE® SBR Latex Polymer family contains two types of emulsions each with variations of latex polymers. Cationic latex polymers modify cationic emulsions, while anionic latex polymers can modify asphalt cements and anionic emulsions.

     

    CATIONIC SBR LATEX POLYMERS
    (For Cationic Polymer Modified Asphalt Emulsion Applications)

    Product UP-65K UP-1156 UP-1158 UP 1159
    % Solids Content,(+/- 1.0) 65.0 65.0 65.0 65.0
    pH, (+/- 0.5) 5.0 5.0 5.0 5.0
    Viscosity, Brookfield 900 1000 1200 1050
    Monomer Ratio,(Styrene/Butadiene) 24/76 24/76 24/76 24/76

    (**Values are typical and not meant to be specifications.)

    ANIONIC SBR LATEX POLYMERS
    (For Anionic Polymer Modified Asphalt Emulsion Applications)

    Product UP 70 UP 72 UP 74 UP 76
    % Solids Content,(+/- 2.0) 70.0 70.0 70.0 70.0
    pH, (+/- 0.5) 10.0 10.0 10.0 10.0
    Viscosity, Brookfield 1500 1500 1500 1300
    Monomer Ratio,(Styrene/Butadiene) 24/76 24/76 24/76 24/76

    (**Values are typical and not meant to be specifications.)

    ULTRAPAVE® is easily co-milled into the emulsion as it is manufactured. Choose ULTRAPAVE® 70 Series for anionic emulsions or one of our ULTRAPAVE® cationic latexes for cationic emulsions.

    A COST-EFFECTIVE WAY TO PROLONG PAVEMENT LIFE

    Blend ULTRAPAVE® Latex Polymers with asphalt paving materials for longer-lasting highways and lower maintenance costs. Only small amounts of ULTRAPAVE® are required making the improvements extremely cost effective.

     

  • Polymeric Aggregate Treatment System

    Preventing the stripping of asphalt binder from the surface of aggregates is extremely important in extending pavement life. Many millions of dollars in maintenance work can be saved each year. Existing systems employing lime and liquid asphalt dilutants have been in use for many years.

    ULTRAPAVE® now introduces an attractive alternative system which has shown excellent results in both laboratory and field trials. The key benefits to be realized by using the Polymeric System are:

    • Pre-Coating of Aggregate
    • Effective Antistrip Agent
    • Simple Application Method
    • Safe Handling and Disposal
    • No odor problems
    • Environmentally Friendly
    • Portable Application system for any size job

     

    Chip Seal

    In Chip Seal applications Ultracote® is used as a pre-treatment system for aggregate. It improves asphalt adhesion, reduces airborne particles, and extends the life of the road.

  • Reduced Tracking Tack Coat Additive

     

    Whether you are putting down a new pavement on an existing pavement or multiple layers during new construct, it is vital to have the layers fuse together to perform a single layer to distribute the stresses and strains that today’s heavy traffic places on our roads and highways. Conventional tack (bond) coats take time to cure and when they do, they often track from where it needs to be to the tires of traffic and construction equipment and onto other pavements. There needs to be a faster breaking and quick curing tack (bond) coat that once it is cured does not track.

     

     

    ULTRAPAVE® has developed a REDUCED TRACKING TACK COAT ADDITIVE, UP 1010, that when added either to an anionic or cationic emulsion that has been optimized for fast breaking and quick cure will provide a Reduced Tracking Tack (Bond) Coat. ULTRAPAVE® ‘s UP 1010 is a blend of select latex polymers especially formulated as a modifier for asphalt emulsion systems used for tack/bond coats. UP 1010 is an effective additive to reduce tracking of an optimized tack/bond coat. Its use in bond (tack) coats formulations improves bonding of the new asphalt layer to the existing pavement layer. The use of UP 1010 in these formulations can assist in reducing the tracking of the applied tack/bond coat prior to new pavement placement. UP 1010 will allow you to use similar asphalts that are used for conventional Tack (bond) coats but without the tracking.

    PROCESSING

    UP 1010 may be added to the anionic or cationic asphalt emulsion at the time of emulsion manufacture either by adding to the solution or by direct injection into the solution line; or post adding to the finished emulsion. The typical formulation will contain 4 – 5% active polymer by weight of asphalt residue. Customers must conduct their own evaluations to verify and optimize performance. UP 1010 lends itself to easy handling, pumping and storage.
    Let ULTRAPAVE® assist you in your development of a Reduced Tracking Tack (Bond) Coat to meet your customer’s need to expedite construction and reduce downtime due to cleanup, saving them time and money,

    Contact your ULTRAPAVE® Representative for specific information on your applications.

     

     

  • SBR Latex Polymers

    ULTRAPAVE® SBR LATEX POLYMERS FOR ASPHALT MODIFICATION

    Today’s increasing loads, greater traffic volume and the need for better, longer-lasting roads demand better service from paving materials. Asphalts modified with ULTRAPAVE® SBR Latex Polymers offer the best method of improving binders for highway, street and airport paving and maintenance projects.

    ULTRAPAVE® SBR Latex Polymers were created specifically for modifying asphalt binders. ULTRAPAVE® SBR easily blends with the asphalt to form a homogenous reinforced composite. ULTRAPAVE® SBR Polymers provide:

    • Optimized visco-elastic properties
      • Increased resistance to rutting and shoving
      • Increased resistance to low temperature cracking
      • Increased resistance to load-associated fatigue cracking
      • Reduced temperature susceptibility
      • Reduced reflective cracking
    • Minimized aging effects
    • Reduced stripping and raveling

    PROPERTIES OF ULTRAPAVE® SBR LATEX POLYMERS

    ULTRAPAVE® SBR Latex Polymers contain emulsion polymerized random copolymers of styrene and butadiene in a water-based system. In latex form, the SBR particles are extremely small (averaging .5 microns), exposing a very high surface area to the asphalt for complete mixing. As a result, the physical dispersion of the polymer particles is rapid and thorough. The base polymer is also available in various molecular weights for improved asphalt compatibility if needed.

    ANIONIC SBR LATEX POLYMERS
    (For Polymer Modified Asphalt)

    Product UP 70 UP 72 UP 74 UP 76 UP 7289
    % Solids Content,(+/- 2.0) 70.0 70.0 70.0 70.0 70.0
    pH, (+/- 0.5) 10.0 10.0 10.0 10.0 10.0
    Viscosity, Brookfield 1500 1500 1500 1300 1600
    Monomer Ratio,(Styrene/Butadiene) 24/76 24/76 24/76 24/76 24/76

    (**Values are typical and not meant to be specifications.)

    Heat and mechanical agitation with time produce a homogenous blend of polymer in the asphalt. As the latex is added, the polymer particles swell from the heat and solvating effects of the resins and oils in the asphalt. A micro-network forms with the polymer producing enhanced rheological properties.

     

    PERFORMANCE-BASED BINDER SPECIFICATION TESTING

    With the implementation of Superpave, a product of the Strategic Highway Research Program (SHRP), the use of rheological engineering properties to describe asphalt cement performance has become essential. ULTRAPAVE® has played a major role in the testing and understanding of these specifications. With over 1,000 different binder systems characterized, the effect of SBR Latex Polymers on different asphalt binders is well understood. Presentations have been made to numerous Departments of Transportation, contractors and asphalt suppliers to assist these groups with understanding the specifications and use of SBR Latex Polymers to enhance the asphalt’s properties.

    The Superpave binder (AASHTO MP1) performance grade requirements provide the materials engineer with better guidelines for creating the optimum polymer-modified asphalt cement. The extensive testing capabilities of ULTRAPAVE® are available to assist the customer in developing the best system. A wide range of SBR Latex Polymers can be used in unique formulations with different asphalt cements to produce the ideal performance grade.

    RESISTANCE TO HIGH TEMPERATURE PERMANENT DEFORMATION

    Although the binder is not the primary cause of rutting and shoving in asphalt concrete pavements, it does play a significant role. The use of ULTRAPAVE® SBR Latex Polymers helps reduce the frequency and severity of permanent deformation. ULTRAPAVE® does this by increasing the elastic nature of the binder at high temperatures. The increased elasticity of the binder allows the system to recover more readily from deformations than unmodified systems. For example, the addition of SBR Latex can significantly increase the high temperature stiffness (G*/Sin Delta) over the same unmodified system.

    LOW TEMPERATURE THERMAL CRACKING

    One of the most beneficial aspects of polymer modification is the reduction in the modified asphalt’s low temperature stiffness. Extensive laboratory testing has shown that ULTRAPAVE® SBR Latex Polymers can reduce the low temperature stiffness, greatly reducing the chances of thermal cracking. Tests performed on mixtures also show that the temperature where thermal stress exceeds the tensile strength of the mixture is significantly lower (15 ° C) for SBR Latex modified mixtures as compared to unmodified mixtures.

    RESISTANCE TO SHORT AND LONG TERM AGING

    The addition of ULTRAPAVE® SBR reduces the thermal and oxidative aging effects which occur in the asphalt cement. The SBR modified binder shows an improvement in properties over unmodified asphalt. With the incorporation of the Pressure Aging Vessel, estimates of the long-term aging properties can be made. SBR Latex Polymers show dramatically lower long-term aging, which emphasizes the durability of the binder. The reduction in aging effects greatly increases the life of the pavement, and ultimately reduces the life cycle cost of the pavement structure.

    TEMPERATURE SUSCEPTIBILITY

    One of the advantages of using SBR Latex Polymers is the reduction in the temperature susceptibility. At high temperatures, the modified binder shows much higher stiffness. Modification ensures high flexibility at low temperatures, and greater visco-elasticity at high temperatures.

    RESISTANCE TO STRIPPING AND RAVELING

    Engineers and agency personnel have found that using SBR Latex Polymers for modified asphalt projects reduces the tendency of the binder to strip from problem aggregates. This finding is supported by extensive lab testing and limited field evaluations of new latex polymers.

    CUSTOMER SUPPORT – BINDER DESIGN OPTIMIZATION

    The ULTRAPAVE® team has a complete Superpave binder laboratory to perform testing on asphalt binders. ULTRAPAVE® personnel will develop the optimum binder for your application by maximizing the performance grade for that particular system. It is the belief of ULTRAPAVE® that each binder can be engineered with the appropriate SBR Latex Polymers to meet desired properties. Our database with over 2,000 entries attests to our experience with different source asphalts supplied by asphalt suppliers and Departments of Transportation. ULTRAPAVE® presentations on the incorporation properties and performance of SBR Latex Polymers are available to user agencies.

    These presentations have been very useful in understanding the Superpave performance grade specification and the enhanced properties of SBR Latex Polymers.

    SBR LATEX POLYMERS SPECIFIED IN AIRPORT PAVEMENTS

    Many states routinely use SBR Latex Polymers as additives in hot-mix asphalt pavements for roads and airports. Airports use them to help prevent thermal cracking, stripping and reflective cracking. Airport authorities noted that the use of SBR Latex allowed more binder in the mixture, thus increasing durability. It was also noted that successful porous friction courses were attained with SBR Latex Polymers.

    METHODS OF MODIFICATION

    Another advantage of using SBR Latex Polymers as an asphalt modifier is that they can be added to any stage of the paving chain – from the refinery to the on-site job location. Major changes in technique are not required.

    ASPHALT CEMENTS

    ULTRAPAVE® can be added at the terminal, refinery, or at the asphalt plant through batch or drum mixers. Call your ULTRAPAVE® representative for specific information on quantities and methods of addition.

    ASPHALT EMULSIONS

    The ULTRAPAVE® SBR Latex Polymer family contains two types of emulsions, each with variations of latex polymers. Cationic latex polymers modify cationic emulsions, while anionic latex polymers can modify asphalt cements and anionic emulsions.

    CATIONIC SBR LATEX POLYMERS
    (For Cationic Polymer Modified Asphalt Emulsion Applications)

    Product UP-65K UP-1156 UP-1158 UP 1159
    % Solids Content,(+/- 1.0) 65.0 65.0 65.0 65.0
    pH, (+/- 0.5) 5.0 5.0 5.0 5.0
    Viscosity, Brookfield 900 1000 1200 1050
    Monomer Ratio,(Styrene/Butadiene) 24/76 24/76 24/76 24/76

    (**Values are typical and not meant to be specifications.)

    ANIONIC SBR LATEX POLYMERS
    (For Anionic Polymer Modified Asphalt Emulsion Applications)

    Product UP 70 UP 72 UP 74 UP 76
    % Solids Content,(+/- 2.0) 70.0 70.0 70.0 70.0
    pH, (+/- 0.5) 10.0 10.0 10.0 10.0
    Viscosity, Brookfield 1500 1500 1500 1300
    Monomer Ratio,(Styrene/Butadiene) 24/76 24/76 24/76 24/76

    (**Values are typical and not meant to be specifications.)

     

    ULTRAPAVE® is easily co-milled into the emulsion as it is manufactured. Choose ULTRAPAVE® 70 Series for anionic emulsions, or one of our ULTRAPAVE® cationic latexes for cationic emulsions.

    A COST-EFFECTIVE WAY TO PROLONG PAVEMENT LIFE

    Blend ULTRAPAVE® Latex Polymers with asphalt paving materials for longer-lasting highways and lower maintenance costs. Only small amounts of ULTRAPAVE® are required, making the improvements extremely cost effective.