1205 - ASPHALT REJUVENATING AGENT 1200 - 11
1205.1 Description
This specification covers materials to be used as an emulsified polymer-modified asphalt rejuvenating agents for the use in hot in-place recycling of asphalt pavements.
1205.2 Requirements
Provide material that has a record of satisfactory performance based on the capability of the material to increase the ductility and lower the visc osity of the asphalt binde r in the pavement surface. Provide an asphalt rejuvenating agent composed of a polymer-modified asphalt emulsion. Modify the asphalt base stock with a minimum of 3.0% styrene-butadiene solution polymer. Blend the polymer modified base stock with process oils or other additives before emulsification to achieve the desired finished product properties. The material must comply with the following physical and chemical requirements in TABLE 1205-1: TABLE 1205-1: ASPHALT REJUVENATING AGENT Property Requirement Viscosity, Saybolt-Furol at 25ºC, sec 15 – 100 Residue, % min.1 60 Sieve Test, % max. 0.10 Oil Distillate, % max. 2 Storage Stability, 24 hrs., % max. 1 Tests on Residue from Distillation: Asphaltenes, % max. 25 Penetration @ 4C, 100g, 5 sec. 50 – 150 Elastic Recovery, AASHTO T 301, 4°C, 20 cm elongation, % min. Run on Distillation Residue 1 Use modified AASHTO T 59 procedure – distillation temperature of 350°F with a 20 minute hold.
1205.3 Test Methods
Test in accordance with the a pplicable provisions of AASHTO T 59, ASTM D 4402 and KT-MR20, “Chemical Analysis of Asphalt Rejuvenating Agents”.
1205.4 Prequalification
Prequalify material under th is specification according to SECTION 1201.
1205.5 Basis of Acceptance
See applicable requirements under SECTION 1201.
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