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This document is a technical specification for bituminous rejuvenation of pavement surfaces at Tinker Air Force Base. The specification details requirements for a chemical rejuvenating agent composed of a petroleum resin-oil base emulsified with water, with specific physical and chemical properties defined by ASTM test methods. The rejuvenation process involves preparing the surface by removing loose material, applying the rejuvenator at a rate of 0.06 gallons per square yard (with a ±20% variation), and spreading mineral aggregate to absorb excess material.
The specification outlines detailed technical requirements for equipment and application, including bituminous storage tanks capable of heating material under controlled temperatures, a bituminous distributor that can spray material in uniform laps, and power brooms and blowers. The mineral aggregate used must meet specific gradation requirements, with precise percentages passing through different sieve sizes. If the application rate is determined to be more than 20% below the approved rate, subsequent applications must be made within 24 hours to ensure adequate penetration into the pavement surface.
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Tinker AFB, OK TAFB Technical Specifications 2019
April 2019 Section 32 01 22 Page 1
SECTION 32 01 22
BITIMINOUS REJUVENATION
PART 1 GENERAL
1.1 Scope
This specification covers the rejuvenation of existing bituminous airfield pavements, roads, streets, parking areas, and other general applications by the use of a chemical rejuvenator.
1.2 Submittals
Government approval of all materials is required prior to use. The following is to be submitted in accordance with Section 01 33 00;
SUBMITTAL PROCEDURES: SD-03 Product Data SD-04 Samples SD-07 Certificates SD-08 Manufacturer’s Instructions
PART 2 PRODUCTS
2.1 Rejuvenator
The asphalt rejuvenating agent shall be composed of a petroleum resin-oil base uniformly emulsified with water and shall conform to the following physical and chemical requirements:
Property Test Method Requirement
Viscosity, S.F at 77 oF, sec. ASTM D 244 15 - 40
Residue, % 1 ASTM D 244(mod.) 0 – 65 (min)
Sieve Test, % ASTM D 244 (Mod.) 0.10 (max.)
Viscosity @ 140 oF, ASTM D 2170 80 - 500 Centistokes 2
Flash Point, Cleveland Open ASTM D 92 350 (min.)
Cup (COC), oF 3
1 ASTM D 244 Modified Evaporation Test for percent residue is made by heating 50 gm samples to 300 F until foaming ceases; then cool immediately and calculate results.
2 Viscosity on residue obtained from evaporation test.
3 Flash point on residue from evaporation test.
April 2019 Section 32 01 22 Page 2
2.2 Aggregate
Gradation of mineral aggregate shall meet the following requirements:
Sieve Percent by Designation Weight Passing No. 16 100 No. 30 40-75 No. 50 4-12 No. 100 0-5
PART 3 EXECUTION
3.1 Bituminous Storage Tanks
Bituminous Storage Tanks shall be capable of heating the bituminous material under effective and positive control at all times to the required temperature.
3.2 Bituminous Distributor
Bituminous Distributor shall be designed and equipped to spray the bituminous material in a uniform double to triple lap at the temperature recommended by the manufacturer, at variable widths, and at readily determined and controlled rates from 0.04 to 0.2 gallons per square yard, plus or minus 5 percent.
3.3 Brooms and Blowers
Brooms and Blowers shall be of the power type.
3.4 Preparation of Surface
Immediately before applying the rejuvenator, all loose material, dirt, clay, or other objectionable material shall be removed from the surface to be treated.
3.5 Application of Rejuvenator
The rejuvenator shall be uniformly applied over the surface at a rate of 0.06 gallons per square yard, with an allowable variation of plus or minus 20 percent. Materials shall be applied at the temperature recommended by the manufacturer.
3.6 Excess Rejuvenator Material
Approved mineral aggregate shall be provided by the Contractor and shall be spread in sufficient quantity to effectively blot up any excess rejuvenator material remaining on the treated pavement surface after 24 hours.
April 2019 Section 32 01 22 Page 3
3.7 Insufficient Rejuvenator Material
When it is determined by the Contracting Officer that the actual application rate of the rejuvenator is more than 20 percent below the approved application rate, subsequent application(s) shall be made within 24 hours to ensure adequate penetration into the pavement surface.
- End of Section -
| Part 1 General |
| part 2 PRODUCTS |
| 2.1 Rejuvenator |
| 2.2 Aggregate |
| part 3 EXECUTION |
| 3.1 Bituminous Storage Tanks |
| 3.2 Bituminous Distributor |
| 3.3 Brooms and Blowers |
| 3.4 Preparation of Surface |
| 3.5 Application of Rejuvenator |
| 3.6 Excess Rejuvenator Material |
| 3.7 Insufficient Rejuvenator Material |
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