EmulsionSpecs.PDF

EMULSIFIED ASPHALTS (BDE)

Effective: August 1, 2019

Revise Article 1032.06 of the Standard Specifications to read:

“1032.06 Emulsified Asphalts. Emulsified asphalts will be accepted according to the current Bureau of Materials Policy Memorandum, “Emulsified Asphalt Acceptance Procedure”.

These materials shall be homogeneous and shall show no separation of asphalt after thorough mixing, within 30 days after delivery, provided separation has not been caused by freezing. They shall coat the aggregate being used in the work to the satisfaction of the Engineer and shall be according to the following requirements.

(a) Anionic Emulsified Asphalt. Anionic emulsified asphalts RS-1, RS-2, HFRS-2, SS-1 h, and SS-1 shall be according to AASHTO M 140, except as follows.

(1) The cement mixing test will be waived when the emulsion is being used as a tack coat.

(2) The Solubility in Trichloroethylene test according to AASHTO T 44 may be run in lieu of Ash Content and shall meet a minimum of 97.5 percent.

(b) Cationic Emulsified Asphalt. Cationic emulsified asphalts CRS-I, CRS-2, CSS-1 h, and CSS-1 shall be according to AASHTO M 208, except as follows.

(1) The cement mixing test will be waived when the emulsion is being used as a tack coat.

(2) The Solubility in Trichloroethylene test according to AASHTO T 44 may be run in lieu of Ash Content and shall meet a minimum of 97.5 percent.

(c) High Float Emulsion. High float emulsions HFE-90, HFE-150, and HFE-300 are medium setting and shall be according to the following table.

Test HFE-90 HFE-150 HFE-300 Viscosity, Saybolt Furol, at 122 °F (50 °C), (AASHTO T 59), SFS ~“ 50 mm. 50 mm. 50 mm.

Sieve Test, No. 20 (850 pm), retained on

~ sieve, (AASHTO T 59), % 0.10 max. 0.10 max. 0.10 max.

Storage Stability Test, I day, (AASHTO T 59), % I max. I max. 1 max.

Coating Test (All Grades), (AASHTO T 59), 3 minutes stone coated thoroughly

Distillation Test, (AASHTO T 59):

Residue from distillation test to 500 °F (260 °C), % 65 mm. 65 mm. 65 mm.

Oil distillate by volume, % 7 max. 7 max. 7 max.

Characteristics of residue from distillation test to 500 °F (260 °C): Penetration at 77 °F (25 °C), (AASHTO T 49), 100 g, 5 sec, dmm 90-150 150-300 300 mm.

Float Test at 140 °F (60 °C), (AASHTO T 50), sec. 1200 mm. 1200 mm. 1200 mm.

1/ The emulsion shall be pumpable.

(d) Penetrating Emulsified Prime. Penetrating Emulsified Prime (PEP) shall be according to AASHTO T 59, except as follows.

Test Result Viscosity, Saybolt Furol, at 77 °F (25 °C), SFS 75 max.

Sieve test, retained on No. 20 (850 pm) sieve, % 0.10 max.

Distillation to 500 °F (260 °C) residue, % 38 mm.

Oil distillate by volume, % 4 max.

The PEP shall be tested according to the current Bureau of Materials Illinois Laboratory Test Procedure (ILTP), “Sand Penetration Test of Penetrating Emulsified Prime (PEP)”.

The time of penetration shall be equal to or less than that of MC-30. The depth of penetration shall be equal to or greater than that of MC-30.

(e) Delete this subparagraph.

(f) Polymer Modified Emulsified Asphalt. Polymer modified emulsified asphalts, e.g. SS-1 hP, CSS-lhP, CRS-2P (formerly CRSP), CQS-lhP (formerly CSS-lh Latex Modified) and HFRS-2P (formerly HFP) shall be according to AASHTO M 316, except as follows.

(1) The cement mixing test will be waived when the polymer modified emulsion is being used as a tack coat.

(2) CQS-1 hP (formerly CSS-1 h Latex Modified) emulsion for micro-surfacing treatments shall use latex as the modifier.

(3) Upon examination of the storage stability test cylinder after standing undisturbed for 24 hours, the surface shall show minimal to no white, milky colored substance and shall be a homogenous brown color throughout.

(4) The distillation for all polymer modified emulsions shall be performed according to AASHTO T 59, except the temperature shall be 374 ± 9 °F (190 ± 5 °C) to be held for a period of 15 minutes and measured using an ASTM 16F (16C) thermometer.

(5) The specified temperature for the Elastic Recovery test for all polymer modified emulsions shall be 50.0 ± 1.0 °F (10.0 ± 0.5 °C).

(6) The Solubility in Trichioroethylene test according to AASHTO T 44 may be run in lieu of Ash Content and shall meet a minimum of 97.5 percent.

(g) Non-Tracking Emulsified Asphalt. Non-tracking emulsified asphalt NTEA (formerly SS lvh) shall be according to the following.

Test Requirement Saybolt Viscosity at 77 °F (25 00), (AASHTO T 59), SFS 20-1 00

Storage Stability Test, 24 hr, (AASI-ITO T 59), % 1 max.

Residue by Distillation, 500 ± 10 °F (260 ± 5 °C), or Residue by Evaporation, 325 ± 5 °F (163 ± 3 °C), (AASHTO T 59), % 50 mm.

Sieve Test, No. 20 (850 pm), (AASHTO T 59), % 0.3 max.

Tests on Residue from Evaporation Penetration at 77 °F (25 00) 100 g, 5 sec, (AASHTO T 49), dmm 40 max.

Softening Point, (AASHTQ T 53), °F (°C) 135 (57) mm.

Ash Content, (AASHTO T 11 1), % ~‘ 1 max.

1/ The Solubility in Trichloroethylene test according to AASHTO T 44 may be run in lieu of Ash Content and shall meet a minimum of 97.5 percent

The different grades are, in general, used for the following.

Grade Use SS-1, SS-1 h, RS-1, RS-2, CSS-1, CRS-1, CRS-2, Tack Coat CSS-lh, HFE-90, SS-lhP, CSS-lhP, NTEA (formerly SS-lvh) PEP Prime Coat RS-2, HFE-90, HFE-150, HFE-300, Bituminous Surface Treatment CRS-2P (formerly CRSP), HFRS-2P (formerly HFP), CRS-2, HFRS-2

CQS-1 hP (formerly CSS-1 h Latex Modified) Micro-Surfacing

Slurry Sealing Cape Seal”

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