32 01 13.pdf

Tinker AFB, OK TAFB Technical Specifications 2019

April 2019 Page 1 Section 32 01 13

SECTION 32 01 13

SPRAY APPLICATIONS, SEAL COATS, AND SURFACE TREATMENTS

PART 1 GENERAL

1.1 DESCRIPTION OF WORK

This specification covers the furnishing and installation of materials for the spray applications, seal coats, and surface treatments of asphalt concrete pavements. Products shall match existing materials and/or shall be as directed by the Contracting Officer. Installation procedures shall be in accordance with the product manufacturer's recommendations. Demolition and removal of materials shall be as required to support the work.

1.2 REFERENCES

The publications listed below form a part of this specification to the extent referenced. The publications are referred to in the text by basic designation only. Unless specifically noted, the current edition of the reference shall be used.

AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM)

ASTM C136 Standard Test Method for Sieve

Analysis of Fine and Coarse Aggregates

ASTM D 490 Standard Specification for Road Tar.

ASTM D 2028 Standard Specification for Cutback

Asphalt (Rapid Curing Type)

ASTM D 2995 Standard Practice for Estimating

Application Rates of Bituminous Distributors

ASTM D 3625 Standard Practice for Effect of

Water on Bituminous-Coated Aggregate Using Boiling Water

UNITED STATES FEDERAL AVIATION ADMINISTRATION (FAA)

FAA AC 150/5320-12 Measurement, Construction and

Maintenance of Skid-Resistant Airport Pavement Surfaces

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U.S. FEDERAL HIGHWAY ADMINISTRATION (FHWA)

MUTCD Manual of Uniform Traffic

Control Devices

OKLAHOMA DEPARTMENT OF TRANSPORTATION (ODOT)

SSHC Standard Specifications for

Highway Construction (SSHC)

1.3 SUBMITTALS

Government approval of all materials, designs and procedures is required prior to use. The following are to be submitted in accordance with Section 01 33 00; SUBMITTAL PROCEDURES:

1.3.1 SD-03 Product Data:

Equipment List Inspection Reports Bituminous Materials Aggregate

1.3.3 SD-06 Test Reports:

Bituminous Materials Aggregates Field Test

1.4 QUALITY ASSURANCE

1.4.1 Contractor Quality Control shall meet the requirements of

Section 01 45 10; CONTRACTOR QUALITY CONTROL.

PART 2 PRODUCTS:

2.1 BITUMINOUS MATERIAL

2.1.1 Bituminous material shall be liquid asphalt complying with

ASTM D 2028, Grade RC-250, or tar complying with ASTM D 490, Grade RT-6.

2.2 AGGREGATE

2.2.1 Aggregates shall consist of crushed stone, crushed gravel, or crushed slag.

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2.2.2 The moisture content of the aggregate shall be such that the aggregate will be readily coated with the bituminous material.

2.2.3 Aggregates shall meet the gradation requirements of ODOT

SSHC Section 703.04.

2.3 EQUIPMENT

2.3.1 Equipment shall meet the requirements of ODOT SSHC Section

401.03 and the following:

2.3.2 The Bituminous Distributor shall be designed and equipped to distribute the bituminous material uniformly at even heat on variable widths of surface at readily determined and controlled rates from 0.05 to 2.0 gal/sq. yd. with a pressure range of from 25 to 75 lbs./sq. in. and with an allowable variation from any specified rate not exceeding 5 percent.

2.3.3 Single-Pass Surface Treatment Machine shall be capable of distributing the bituminous material and aggregates uniformly in controlled amounts in a single-pass operation over the surface to be sealed.

2.3.4 Heating Equipment for Storage Tanks shall consist of steam coils, hot oil coils, or electrical coils. If steam or hot oil coils are used, the coils must be so designed and maintained that the bituminous material cannot become contaminated.

2.3.5 Power Rollers shall be the self-propelled tandem and

three-wheel type rollers, weighing not less than 5 tons and shall be suitable for rolling bituminous pavements.

2.3.6 Self-Propelled Pneumatic-Tired Rollers shall have a total compacting width of not less than 60 inches. The gross weight shall be adjustable within the ranges of 200 to 350 lbs./in. of compacting width.

2.3.7 Aggregate spreading equipment shall be adjustable and

capable of spreading aggregate at controlled amounts per square yard.

2.3.8 Broom drags shall consist of brooms mounted on a frame, designed to spread fine aggregate uniformly over the surface of a bituminous pavement. Towing equipment shall have pneumatic tires.

2.3.9 Brooms and Blowers shall be of the power type and shall be suitable for cleaning surfaces of bituminous pavements.

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PART 3 EXECUTION:

3.1 SURFACE PREPARATION

3.1.1 Clean all cracks with compressed air prior to filling.

3.1.2 Material for filling cracks shall be compatible with the seal coat material.

3.1.3 Fill all cracks wider than one fourth inch, but narrower than three fourths of an inch with a crack sealer.

3.1.4 Fill all cracks wider than three fourths of an inch with a mixture of fine aggregate and sealer.

3.1.5 Fill all cracks to within one eighth of an inch of the

pavement surface.

3.1.6 Immediately before application of the sealcoat, all loose material, dirt, clay, or other objectionable material are to be removed from the surface with a power broom or blower supplemented with hand brooms and a vacuum sweeper.

3.2 APPLICATION

3.1.1 Immediately following the preparation of the surface, apply the sealcoat uniformly over the entire surface to be treated. All spots missed by the distributor shall be properly treated with bituminous material.

3.1.2 Application temperature shall provide an application

viscosity between 10 and 60 seconds, Saybolt Furol, or between 20 and 120 centistokes, kinematic. Furnish the temperature viscosity relation to the CO.

3.1.3 Application of seal aggregate shall immediately follow the application of bituminous material, and in no case shall the time to application exceed 5 minutes.

3.1.4 Begin the rolling operations immediately following the

application of cover aggregate. Rolling shall be accomplished with pneumatic-tired rollers; steel-wheeled rollers shall be used in a supplementary capacity only.

3.1.5 All surplus aggregate shall be swept off the surface and removed not less than 24 hours or more than 72 hours after rolling is completed.

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3.3 TESTING

3.3.1 Perform Field Tests in sufficient numbers to insure that the specifications are being met.

3.3.2 Testing is the responsibility of the contractor.

3.3.3 Testing shall be performed by the approved commercial

laboratory listed in Section 01 45 10; CONTRACTOR QUALITY

CONTROL.

3.3.4 All tests reports shall be submitted to the CO in

accordance with Section 01 33 00; SUBMITTAL PROCEDURES.

3.3.5 The following number of test, if performed at the

appropriate time, will be the minimum acceptable for each type of operation:

3.3.5.1 Aggregate

a. Stripping

(1) Perform stripping tests on aggregate from each source prior to incorporation into the work.

(2) Perform stripping tests in accordance with

ASTM D 3625.

b. Gradations

(1) Perform gradation tests once per day per source of material used.

(2) Preform gradation tests in accordance with

ASTM C 136.

(3) Deficient material shall be retested and the coating in place with the deficient aggregate shall be tested for acceptability.

(4) Replace all in-place deficient unacceptable material or re-apply seal coat material conforming to the specifications as directed by the CO.

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3.3.5.2 Water

a. Compatibility

(1) Prior to incorporation into the work perform compatibility test on the water according to the following:

(a) Thoroughly agitate a mixture of eight ounces of the proposed water and eight ounces of the proposed asphalt emulsion and allow the mixture to sit, undisturbed, for 24 hours.

(b) The water shall be considered compatible if, after the 24 hour period, there is no separation of the emulsion, no particle settlement, no clotting or no other adverse conditions observed.

(c) Non-compatible water shall either be treated with an approved chemical or replaced with water from a compatible source.

3.3.5.3 Application

a. The application of the seal coat shall be inspected throughout the placement for uniformity.

b. Obtain three samples for each 1000 square yards of surface area treated.

c. Obtain the samples at random locations, recommended by the contractor and approved by the CO.

d. Obtain sample in accordance with ASTM D 2995.

e. Weigh the samples to determine conformance with the application rate.

3.3.5.4 Friction

a. Airfield applications are to be tested for friction characteristics.

b. Perform friction tests in accordance with

FAA AC 150/5320-12.

c. Tests shall include friction tests run at speeds of 40 miles per hour and 60 miles per hour and under both wet and dry conditions.

d. Tests shall be run 15 feet to each side of the centerline of the pavement.

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e. The CO shall be present during all airfield friction tests.

3.4 TRAFFIC CONTROL

3.4.1 Protect freshly placed coatings from damage by traffic.

3.4.2 Provide sufficient warning signs and barricades to prevent traffic over freshly treated areas.

3.4.3 Warning signs and barricades shall meet the requirements of

MUTCD.

3.4.4 Protect treated areas from traffic for at least 48 hours after final application of seal coat materials.

3.4.5 Do not remove traffic control signs and barricades until all permanent signs are in place and the pavement has been marked according to the plans and specifications.

3.4.6 Remove all traffic control signs and barricades within 24 hours after final project acceptance by the CO.

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