824Cationic Asphalt Emulsion

824.1 General Description

This section includes the requirements for cationic asphalt emulsions.

824.1.01 Related References

A. Standard Specifications General Provisions 101 through 150. B. Referenced Documents AASHTO T 49 AASHTO T 44 AASHTO T 51 AASHTO T 53 AASHTO T 59 AASHTO T 72 AASHTO T 301 AASHTO T 302 ASTM D 5546 - 01 QPL 65 GDT 44 GDT 91 GDT 135

824.2 Materials

824.2.01 Cationic Asphalt Emulsion

A. Requirements Use a homogenous emulsion. After thorough mixing at the viscosity testing temperature, the emulsion cannot show signs of separation within 30 days from manufacture date. Use cationic emulsion grades that meet the requirements in Table 1, Table 2, Table 3 and Table 4. B. Fabrication General Provisions 101 through 150. C. Acceptance Test as follows: Test Method Testing emulsified asphalts (with the following exception): Frictional value AASHTO T 59 GDT 44 D. Materials Warranty General Provisions 101 through 150. Table 1—Requirements for Cationic Emulsified Asphalt Type Rapid Setting Quick Setting Grade CRS-1h CRS-2h CRS-3 CRS-2P (Note 1,7) CQS-1h (Note 2 & 3) CQS-1hP (Note 7) Uses Tack Coat Surface Treatment Surface Treatment Surface Treatment Tack Coat Slurry Seal Micro Surf. Tests Min. Max. Min. Max. Min. Max. Min. Max. Min. Max. Min. Max. Viscosity. Saybolt Furol at 77 oF (25 °C), sec. AASHTO T72 20 100 20 150 Viscosity. Saybolt Furol at 122 oF (50 °C), sec. AASHTO T72 20 100 100 400 100 500 100 400 Storage stability test, (Note 5) 24 hours, % AASHTO T59 1 1 1 1 1 1 Settlement (Note 5) 5 days, % AASHTO T59 5 5 5 5 5 Demulsibility (Note 6) 35 ml, 0.8% dioctyl sodium sulfosuccinate, % AASHTO T59 40 40 40 40 Coating Ability and Water Resistance: AASHTO T59 Coating, dry aggregate Coating, after spraying Coating, wet aggregate Coating, after spraying Particle charge test AASHTO T59 Positive Positive Positive Positive Positive Positive Sieve test, percent AASHTO T59 0.10 0.10 0.10 0.10 0.10 0.10 Oil distillate by vol. of emulsion, % AASHTO T59 3 3 3 3 Residue, By Distillation, (%) (Note 7) 60 65 65 Residue, By Evaporation, (%) (Note 8) 60 65 65 57 60 Test on Residue from Distillation Test: Penetration, 77 oF (25 °C), 100 g, 5 sec., (dmm) AASHTO T49 40 100 80 140 60 110 80 175 40 90 40 90 Ductility, 77 oF (25 °C), 5 cm/min., (cm) AASHTO T51 40 40 40 125 40 40 Solubility in trichloroethylene, % AASHTO T44 97.5 97.5 97.5 97.5 97.5 97.5 Softening Point (°F) AASHTO T53 or other method approved by Office of Materials and Testing 125 135 Elastic Recovery @ 77°F (25 °C), % AASHTO 301 Note 1: May be acceptable for limited use in conjunction with OMAT’s recommendation Note 2: Slurry Seal containing CQS-1h must set sufficiently within 2 hours to allow traffic to resume. Note 3: In the laboratory, Slurry Seal containing CQS-1h shall not set while being mixed according to GDT 91 for a minimum of 90 seconds. Note 4: Failure to break within 30 minutes after application and/or other than minor tracking of the tack once it has broken may subject the non-tracking tack product to re-evaluation for QPL 7 “Georgia’s List of Approved Bituminous Materials”. Note 5: The 24-hour storage stability test may be used. However, this test does not predict whether the 5-day settlement test will pass. Note 6: Perform the demulsibility test within 30 days from date of manufacture. Note 7: AASHTO T 59 modified to include a maximum temperature of 350 °F ± 10 °F to be held for 20 minutes. Note 8: Use Residue by Evaporation for all testing on residue material. Residue by Distillation may be used if penetration, softening point and/or ductility test fail on residue by evaporation. Note 1: Failure to break within 30 minutes after application and/or other than minor tracking of the tack once it has broken may subject the non-tracking tack product to re-evaluation for QPL 7 “Georgia’s List of Approved Bituminous Materials”. Table 2—Requirements for Special Emulsified Asphalts Grade Manufacturer Specific (Note 1) C-AEP Type Tack Coat Prime Tests Min. Max. Min. Max. Viscosity. Saybolt Furol at 77 oF (25 °C), sec. AASHTO T72 15 150 10 50 Storage stability test, (Note 2) 24 hours, % AASHTO T59 1 1 Settlement (Note 2) 5 days, % AASHTO T59 5 5 Particle charge test AASHTO T59 Positive Positive Sieve test, percent AASHTO T59 0.20 0.10 Oil distillate by vol. of emulsion, % AASHTO T59 1 5 12 Residue, By Evaporation (%) (Note 3) 50 45 Residue, By Distillation, (%) (Note 3) 50 45 Test on Residue from Distillation Test: Penetration, 77 oF (25 °C), 100 g, 5 sec., (dmm) AASHTO T49 90 Softening Point (°F) AASHTO T53 or other method approved by Office of Materials and Testing 125 Solubility in Trichloroethylene, (Percent) 97.5 Float at 140 °F (60 oC), (Sec.) 20 Note 2: The 24-hour storage stability test may be used. However, this test does not predict whether the 5-day settlement test will pass. Note 3: Use Residue by Evaporation or Distillation for all testing on residue material. Residue by Distillation may be used if penetration, softening point and/or ductility test fail on residue by evaporation. Table 3—Requirements for Cationic Emulsified Asphalt Type Medium Setting Slow Setting Grade CMS-2 CMS-1P (Note 1) CMS-1P(R) (Notes 1 & 5) CSS-1h ECR-1 Uses Pre-Coating Scrub Seal Rejuv.Seal Slurry Seal (Note 2) Tests Min. Max. Min. Max. Min. Max. Min. Max. Min. Max. Viscosity. Saybolt Furol at 77 oF(25 °C), sec. AASHTO T 72 50 350 20 100 20 100 50 500 Viscosity. Saybolt Furol at 122 oF (50 °C), sec. AASHTO T 72 50 450 Storage stability test, (Note 3) 24 hours, percent AASHTO T 59 1 1 1 1 1 Settlement (Note 3) 5 days, percent AASHTO T59 5 5 5 5 5 Demulsibility (Note 4) 35 ml, 0.8% dioctyl sodium sulfosuccinate, percent Coating Ability and Water Resistance: AASHTO T 59 Coating, dry aggregate Good Coating, after spraying Fair Coating, wet aggregate Fair Good Coating, after spraying Fair Particle charge test AASHTO T59 Positive Positive Positive Positive Positive Sieve test, percent AASHTO T59 0.10 0.10 0.10 0.10 0.10 Oil distillate by volume of emulsion, percent AASHTO T59 12 0.5 0.5 6 Residue, By Evaporation, (%) (Note 6) AASHTO T59 65 60 57 57 60 Residue, By Distillation, (%) (Note 6) AASHTO T59 65 60 Test on Residue from Distillation Test: Penetration, 39.2 °F (4 °C), 200 g, 60 sec., (dmm) AASHTO T49 30 90 30 90 Test on Residue from Distillation Test: Penetration, 77 °F (25 °C), 100 g, 5 sec., (dmm) AASHTO T49 40 90 125 225 Ductility, 77 oF (25 °C), 5 cm/min., (cm) AASHTO T51 40 40 40 Solubility in trichloroethylene, % AASHTO T44 97.5 97.5 97.5 Softening Point (°F) AASHTO T53 or other method approved by Office of Materials and Testing 125 125 Note 1: May be acceptable for limited use in conjunction with OMAT’s recommendation Note 2: Use ECR-1 in cold mix recycling of reclaimed pavements. Note 3: The 24-hour storage stability test may be used. However, this test does not predict whether the 5-day settlement test will pass. Note 4: Perform the demulsibility test within 30 days from date of manufacture. Note 5: Use CMS-1P(R) as a Rejuvenation Seal diluted 1:1. Sample undiluted for testing at the manufacture site. Sample diluted for testing from distributor on project (Minimum Residue 29%). Note 6: Use Residue by Evaporation for all testing on residue material. Residue by Distillation may be used if penetration, softening point and/or ductility test fail on residue by evaporation.

824.2.02 Latex-Modified Cationic Asphalt Emulsion

A. Requirements Latex Rubber Additive (LRA) • Ensure the LRA is a natural latex or an unvulcanized styrene-butadine rubber in an emulsified latex form. • Ensure that the LRA comes from an approved source listed in the Department’s current QPL 65 for use in cationic asphalt emulsion. Latex-Modified Cationic Asphalt Emulsion a. Use PG58-22 as the base asphalt. b. Co-mill the LRA and asphalt cement while manufacturing the emulsified asphalt to produce a homogeneous mixture. c. Ensure the latex-modified cationic asphalt emulsion, when undisturbed for 24 hours, shows no separation of emulsion and LRA and no color striations, but has a uniform color throughout. d. Use a latex-modified cationic asphalt emulsion that meets the requirements in Table 4. Table 4 – Requirements for Latex-Modified Cationic Asphalt Emulsion Type Rapid Setting Grade CRS-2L Use Surface Treatment Tests on Emulsion Min Max Viscosity, Saybolt Furol @ 122 °F (50 °C), sec. AASHTO T 72 100 400 Storage stability, 24 hours, percent AASHTO T 59 1 Settlement, 5 days, percent AASHTO T 59 5 Demulsibility, 35 ml, 0.8% dioctyl sodium sulfosuccinate, percent AASHTO T 59 40 Particle charge test AASHTO T59 Positive Sieve test, percent AASHTO T 59 0.10 Oil distillate by volume of emulsion, percent AASHTO T5 9 3 Residue by Evaporation, percent (Notes 1 & 2) 65 Residue by Distillation, percent AASHTO T 59 (Note 3) 65 Tests on Emulsion Residue Min Max Penetration @ 77 °F (25 °C), 100g, 5 sec., (dmm) AASHTO T 49 80 175 Ductility, @ 77 °F (25 °C), 5 cm/min., (cm) AASHTO T 51 125 Elastic recovery @ 77°F (25°C), (%) AASHTO 301 50 Softening Point (°F) AASHTO T53 or other method approved by Office of Materials and Testing 125 1. GDT-135, Residue by evaporation. 2. Use Residue by Evaporation for all testing on residue material. Residue by Distillation may be used if penetration, softening point and/or ductility tests fail on residue by evaporation. 3. AASHTO T 59 modified to include a maximum temperature of 350 °F ± 10 °F to be held for 20 minutes. Note 1: GDT-135, Residue by evaporation. Note 2: Use Residue by Evaporation for all testing on residue material. Residue by Distillation may be used if penetration, softening point and/or ductility tests fail on residue by evaporation. Note 3: AASHTO T 59 modified to include a maximum temperature of 350 °F ± 10 °F to be held for 20 minutes. B. Fabrication General Provisions 101 through 150. C. Acceptance Test as follows: Test Method Penetration of bituminous materials AASHTO T 49 Ductility AASHTO T 51 Softening point of bitumen AASHTO T 53 Testing emulsified asphalts AASHTO T 59 Viscosity AASHTO T 72 Elastic recovery AASHTO T 301 Polymer content of polymer-modified emulsions AASHTO T 302 Solubility of asphalt binders in toluene by centrifuge ASTM D 5546 – 01 Residue by evaporation of latex-modified asphalt emulsions GDT-135 D. Materials Warranty General Provisions 101 through 150.