822.1 General Description
This section includes the requirements for homogenous emulsions of asphalt, water, and emulsifying agents.
822.1.01 Related References
A. Standard Specifications Section 820–Asphalt Cement B. Referenced Documents AASHTO T 50 AASHTO T 59
822.2 Materials
822.2.01 Emulsified Asphalt
A. Requirements Type Use materials not containing lumps and not showing separation during handling or storage of up to 30 days. Grade Use the various grades of emulsified asphalts meeting or exceeding the requirements in Table 1. Table 1—Requirements for Emulsified Asphalt Type Rapid Setting Slow Setting Grade RS-2h SS-1h SS-1 Min. Max. Min. Max. Min. Max. Tests on Emulsion: Viscosity Saybolt Furol at 77 °F (25 oC), (Sec.) Viscosity Saybolt Furol at 122 °F (50 oC), (Sec.) 75 400
a.Settlement 5 Days, (%) (Note1)
b.Storage Stability Test 1 Day, (Percent)
c.Demulsibility, 35 ml, 0.02N. CaCl2, (%) (Note 2)
d.Cement Mixing Test, (%) (Note 3) 2.0 2.0 Sieve Test, (%) 0.10 0.10 0.10 Table 1—Requirements for Emulsified Asphalt Type Rapid Setting Slow Setting Grade RS-2h SS-1h SS-1 Min. Max. Min. Max. Min. Max. Oil Distillate by Volume (%) Residue by Distillation (Percent AC) 63 57 57 Tests on Residue from Distillation Test: Penetration 77 °F (25 oC) 100 gm/5 Sec. (dmm) 80 140 40 90 100 200 Ductility at 77 °F (25 oC) 5 cm/min. (cm) 40 40 40 Solubility in Trichloroethylene, (Percent) 97.5 97.5 97.5 Float at 140 °F (60 oC), (Sec.) Softening Point, °F Note 1: The 24-hour (1 day) storage stability test may be used but does not predict that the 5-day settlement test will pass. Note 2: Ensure the demulsibility test is made within 30 days from date of shipment. Note 3: Ensure the cement mixing test will be applicable only if material is used in Asphalt Slurry Seal. 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: Anionic emulsified asphalt is not compatible with cationic emulsions (CRS, CMS, CSS, CQS etc.). Ensure all equipment is thoroughly cleaned if cationic emulsion was previously present. Table 2 - Requirements for Special Emulsified Asphalt Types Tack Coat Prime Grade Non-Tracking Tack (Note 3) AEP EAP-1 Min. Max. Min. Max. Min. Max. Tests on Emulsion: Viscosity Saybolt Furol at 77 °F (25 oC), (Sec.)
a.Settlement 5 Days, (%) (Note1) 5 5 5
b.Storage Stability Test 1 Day, (Percent) 1 1 1
c.Demulsibility, 35 ml, 0.02N. CaCl2, (%) (Note 2) Sieve Test, (%) 0.20 0.10 0.10 Oil Distillate by Volume (%) 1 5 12 5 12 Residue, By Evaporation (%) (Note 5) 45 50 Residue by Distillation (Percent AC) 50 45 50 Tests on Residue from Distillation Test: Penetration 77 °F (25 oC) 100 gm/5 Sec. (dmm) Ductility at 77 °F (25 oC) 5 cm/min. (cm) Solubility in Trichloroethylene, (Percent) 97.5 97.5 Float at 140 °F (60 oC), (Sec.) 20 20 Softening Point, °F 125 Note 1: The 24-hour (1 day) storage stability test may be used but does not predict that the 5-day settlement test will pass. Note 2: Ensure the demulsibility test is made within 30 days from date of shipment. Note 3: 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 4: Anionic emulsified asphalt is not compatible with cationic emulsions (CRS, CMS, CSS, CQS etc.). Ensure all equipment is thoroughly cleaned if cationic emulsion was previously present. Note 5: 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. B. Fabrication General Provisions 101 through 150. C. Acceptance Test as follows: Test Method Testing emulsified asphalts AASHTO T 59 Float test AASHTO T 50 D. Materials Warranty General Provisions 101 through 150.
Referenced in this section
Emulsified Asphalt in other states
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Source: Standard Specifications for Construction of Transportation Systems, 2021 Edition. Pages 1519–1522 of 2,050. View official source ↗