Attach 4.4 UFGS 32 12 36.13.pdf

SECTION 32 12 36.13 Page 1

Edited March 22nd, 2021

USACE / NAVFAC / AFCEC / NASA UFGS-32 12 36.13 (May 2017)

Preparing Activity: USACE Superseding UFGS-32 01 13 (August 2008)

UNIFIED FACILITIES GUIDE SPECIFICATIONS

References are in agreement with UMRL dated October 2020

SECTION TABLE OF CONTENTS

DIVISION 32 - EXTERIOR IMPROVEMENTS

SECTION 32 12 36.13

ASPHALTIC SEAL AND FOG COATS

05/17

PART 1 GENERAL

1.1 UNIT PRICES

1.1.1 Measurement

1.1.1.1 Bituminous Material

1.1.1.2 Aggregate

1.1.2 Payment

1.1.3 Waybills and Delivery Tickets

1.2 REFERENCES

1.3 SUBMITTALS

1.4 EQUIPMENT, TOOLS, AND MACHINES

1.4.1 Bituminous Distributors

1.4.2 Aggregate Spreader

1.4.3 Pneumatic-Tired Roller

1.4.4 Power Brooms and Power Blowers

1.4.5 Scales

1.4.6 Weighhouse

1.4.7 Storage Tanks

1.4.8 Single-Pass, Surface-Treatment Machines

1.4.9 Vacuum Sweepers

1.5 QUALITY ASSURANCE

1.5.1 Samples

1.5.2 Aggregates Source

1.5.3 Bituminous Material Source

1.5.4 Equipment Calibration

1.6 DELIVERY, STORAGE, AND HANDLING

1.7 ENVIRONMENTAL REQUIREMENTS

PART 2 PRODUCTS

2.1 BITUMINOUS MATERIAL FOR SEAL COAT

2.2 AGGREGATE FOR SEAL COAT

2.2.1 Coarse Aggregate

2.2.1.1 Film Retention

2.2.1.2 Particle Shapes

2.2.1.3 Weight Loss

SECTION 32 12 36.13 Page 2

2.2.1.4 Friable Particles

2.2.1.5 Crushed Slag

2.2.1.6 Crushed Aggregate

2.2.2 Fine Aggregate

2.3 EMULSIFIED ASPHALT FOR FOG SEAL

2.4 WATER

PART 3 EXECUTION

3.1 PREPARATION OF SURFACE

3.2 SEAL COAT APPLICATION

3.2.1 Rate

3.2.2 Temperature

3.2.3 Application of Bituminous Material

3.2.4 Aggregate Application Rate

3.2.5 Application of Aggregate

3.2.6 Rolling and Brooming

3.3 FIELD QUALITY CONTROL - SEAL COAT

3.3.1 Tests

3.3.1.1 Gradation

3.3.1.2 Abrasion Resistance

3.3.1.3 Stripping

3.3.2 Bituminous Material Sample

3.4 TRIAL APPLICATION - SEAL COAT

3.5 FOG SEAL APPLICATION

3.5.1 Sample Application

3.5.2 Application Inspection

3.5.3 Inspection Reports

3.5.4 Application

3.6 SITE PROTECTION

3.7 TRAFFIC CONTROL

-- End of Section Table of Contents --

SECTION 32 12 36.13 Page 3

USACE / NAVFAC / AFCEC / NASA UFGS-32 12 36.13 (May 2017)

Preparing Activity: USACE Superseding UFGS-32 01 13 (August 2008)

UNIFIED FACILITIES GUIDE SPECIFICATIONS

References are in agreement with UMRL dated October 2020

SECTION 32 12 36.13

ASPHALTIC SEAL AND FOG COATS

05/17

PART 1 GENERAL

1.1 UNIT PRICES

1.1.1 Measurement

Measure the quantities of bituminous material and aggregate used in the accepted work and to be paid for, provided that the measured quantities are not more than 10 percent over the specified application rate. Any amount of bituminous material and aggregate more than 10 percent over the specified application rate for each application will be deducted from the measured quantities except for irregular areas where hand spraying of the bituminous material and hand spreading of the aggregate is necessary.

1.1.1.1 Bituminous Material

The amount of bituminous material to be paid for will be measured in gallons at 60 degrees F] of residual asphalt cement. Correct volumes measured at temperatures other than 60 degrees F in accordance with [ASTM D1250] [using a coefficient of expansion of 0.00025 per degree F for asphalt emulsion].

1.1.1.2 Aggregate- NOT USED

1.1.2 Payment

The quantities of aggregate and bituminous material, determined as specified above, will be paid for at the respective contract unit prices.

Payment will constitute full compensation for all operations necessary to complete the work as specified herein.

1.1.3 Waybills and Delivery Tickets- This section not used.

1.2 REFERENCES

The publications listed below form a part of this specification to the extent referenced. The publications are referred to within the text by the basic designation only.

SECTION 32 12 36.13 Page 4

AMERICAN ASSOCIATION OF STATE HIGHWAY AND TRANSPORTATION OFFICIALS

(AASHTO)

AASHTO M 81 (1992; R 2017) Standard Specification for

Cutback Asphalt (Rapid-Curing Type)

AASHTO M 82 (2017) Standard Specification for Cutback Asphalt (Medium-Curing Type)

AASHTO M 226 (1980; R 2017) Standard Specification for Viscosity-Graded Asphalt Cement

ASTM INTERNATIONAL (ASTM)

ASTM D977 (2019a; E 2019) Standard Specification for Emulsified Asphalt

ASTM D1250 (2019; E 2020) Standard Guide for Use of the Joint API and ASTM Adjunct for Temperature and Pressure Volume Correction Factors for Generalized Crude Oils, Refined Products, and Lubricating Oils:

API MPMS Chapter 11.1

ASTM D2027/D2027M (2019) Cutback Asphalt (Medium-Curing Type)

ASTM D2028/D2028M (2015) Cutback Asphalt (Rapid-Curing Type)

ASTM D2397/D2397M (2019a) Standard Specification for

Cationic Emulsified Asphalt

ASTM D2995 (1999; R 2009) Determining Application Rate of Bituminous Distributors

ASTM D3381/D3381M (2018) Standard Specification for

Viscosity-Graded Asphalt Binder for Use in Pavement Construction

U.S. FEDERAL HIGHWAY ADMINISTRATION (FHWA)

MUTCD (2009; Rev 2012) Manual on Uniform Traffic Control Devices

1.3 SUBMITTALS

Submit the following in accordance with Section 01 33 00 SUBMITTAL

PROCEDURES:

SD-03 Product Data

Equipment List Inspection Reports

SD-06 Test Reports

Tests

SECTION 32 12 36.13 Page 5

1.4 EQUIPMENT, TOOLS, AND MACHINES

Equipment, plant and tools used in the work are subject to approval.

Maintain in a satisfactory working condition at all times. Provide equipment which is adequate and has the capability of producing the results specified. Provide calibrated equipment, such as asphalt distributors, scales, batching equipment, spreaders and similar equipment, that has been calibrated by an approved calibration laboratory within 30 days prior to commencing work, by such laboratory from the date of recalibration, during the term of the contract]. Submit an equipment list with calibration reports.

1.4.1 Bituminous Distributors- This section not used.

1.4.2 Aggregate Spreader- This section not used.

1.4.3 Pneumatic-Tired Roller- This section not used.

1.4.4 Power Brooms and Power Blowers

Provide power brooms and power blowers suitable for cleaning surfaces to [be treated] [which the seal coat is to be applied].

1.4.5 Scales- This section not used.

1.4.6 Weighhouse- This section not used.

1.4.7 Storage Tanks

Provide tanks capable of heating the bituminous material, under effective and positive control at all times, to the required temperature.

Accomplish heating by steam coils, hot oil, or electricity. Affix to the tank an armored thermometer with a range from 37.8 to 148.9 degrees C 100 to 300 degrees F so that the temperature of the bituminous material may be read at all times.

1.4.7.1 Single-Pass, Surface-Treatment Machines- This section not used.

1.4.8 Vacuum Sweepers

Provide self-propelled, vacuum pickup sweeper capable of removing loose sand, water, and debris from pavement surface.

1.5 QUALITY ASSURANCE

1.5.1 Samples- This section not used.

1.5.2 Aggregates Source- This section not used.

1.5.3 Bituminous Material Source

Select sources from which bituminous materials are to be obtained and notify the Contracting Officer within 15 days after the award of the contract.

SECTION 32 12 36.13 Page 6

1.5.4 Equipment Calibration

Furnish all equipment, materials and labor necessary to calibrate the bituminous distributor. Perform all calibrations with the approved job materials and prior to applying the specified coatings to the prepared surface. Perform calibration of the bituminous distributor in accordance with ASTM D2995. Inspect all equipment prior to start of work and at regular intervals as needed during work.

1.6 DELIVERY, STORAGE, AND HANDLING

Deliver asphalt materials to the site in a homogenous and undamaged condition. Inspect the materials for contamination and damage. Unload and store the materials with a minimum of handling. Replace defective or damaged materials.

1.7 ENVIRONMENTAL REQUIREMENTS

Apply the coating when the existing surface is dry, and when the weather is not foggy, rainy, or when the wind velocity will prevent the uniform application of the bitumen or aggregates. Apply fog seal when atmospheric temperature is above 10 degrees C 50 degrees F and rising or when pavement temperature is above 15.5 degrees C 60 degrees F, unless otherwise directed.

PART 2 PRODUCTS

2.1 BITUMINOUS MATERIAL FOR SEAL COAT- This section not used

2.2 AGGREGATE FOR SEAL COAT- This section not used

2.3 EMULSIFIED ASPHALT FOR FOG SEAL

NOTE: In a majority of applications, the cationic (CSS-1h) is preferable to the anionic (SS-1h) for use as fog seal. Cationic emulsion will cure at a faster rate than anionic and is more suitable where high humidity prevails.

Use emulsified asphalt for Fog Seal conforming to ASTM D2397/D2397M[CSS-1] [CSS-1h] cationic materials.

2.4 WATER

Provide fresh, clean, and potable water.

PART 3 EXECUTION

3.1 PREPARATION OF SURFACE

NOTE: If the surface to be treated requires repairs, the method of repairs and extent of work involved should be shown or described.

SECTION 32 12 36.13 Page 7

Removal of paint and rubber deposits are generally accomplished by high pressure water blasting but care must be used to ensure that the water pressure does not significantly damage the asphalt pavement surface. Few approved chemicals are effective and sandblasting is not permitted at the 934th AFR Station

Repair damaged surface and fill cracks before starting work. Immediately before starting work, remove all loose material, dirt, clay, or other objectionable material from the surface to be treated with power brooms or power blowers, if needed. Paint firmly bonded to the surface may remain. Do not mix material removed from the surface with the cover aggregate. When necessary to achieve a clean surface for fog application, flushing with water will be permitted.

3.2 SEAL COAT APPLICATION

3.2.1 Rate

Spread the bituminous material in the quantities shown in TABLE III. The exact quantities within the range specified, which may be varied to suit field conditions, will be determined by the Contractor and approved by the Contracting Officer prior to use. The bituminous quantities may have to be increased when the pavement has rough surface texture and may have to be decreased when the pavement surface is very tight.

TABLE III. APPLICATION OF MATERIAL

(Quantities Per Square Meter)

Gradation No. Bitumen, liters gallons Aggregate, kg pounds

1 0.60-0.900.15-0.20 8-1015-20

2 0.45-0.600.10-0.15 5-810-15

3 0.45-0.600.10-0.15 5-810-15

3.2.2 Temperature

Apply asphalt at a temperature that will provide an application viscosity between 10 and 60 seconds, Saybolt Furol, or between 20 and 120 centistokes, kinematic.

3.2.3 Application of Bituminous Material

Following the preparation and inspection of the pavement surface, apply the seal coat material at the specified application rates. Uniformly apply the bituminous material in a single pass of the distributor and with either a double or triple lap spray over the surface to be sealed. Spread building paper on the surface for a sufficient distance back from the ends of each application so that flow through the spray bar may be started and stopped on the paper and so that all sprays will be operating at the proper pressure on the surface to be sealed. Immediately after the bituminous material application, remove the building paper. Apply bituminous material to all areas missed with the distributor. No smoking, fires, or flames, other than the heaters that are a part of the equipment, SECTION 32 12 36.13 Page 8 will be permitted within 8 meters 25 feet of heating, distributing, and transferring operations of bituminous material other than bituminous emulsions.

3.2.4 Aggregate Application Rate- This section not used.

3.2.5 Application of Aggregate- This section not used.

3.2.6 Rolling and Brooming- This section not used.

3.3 FIELD QUALITY CONTROL - SEAL COAT

3.3.1 Tests- This section not used.

3.3.1.1 Gradation- This section not used.

3.3.1.2 Abrasion Resistance- This section not used.

3.3.1.3 Stripping- This section not used.

3.3.2 Bituminous Material Sample- This section not used.

3.4 TRIAL APPLICATION - SEAL COAT

Prior to applying the seal coat, place a test section at least 20 feet long by 20 feet wide using the approved job materials and roll them in accordance with the specified requirements. Perform tests to determine the application rates of the bitumen and aggregate. If the tests indicate that the seal coat test section does not conform to the specification requirements, make necessary adjustments to the application equipment and to the spreading and rolling procedures, and construct additional test sections for conformance to the specifications. Where test sections do not conform to specification requirements, remove seal coat at no expense to the Government; no separate payment will be made for seal coat materials and labor, either in placement or removal of any test section. Perform quality control sampling and testing during construction as required in paragraph FIELD QUALITY CONTROL above.

3.5 FOG SEAL APPLICATION

3.5.1 Sample Application- This section not used.

3.5.2 Application Inspection- This section not used.

3.5.3 Inspection Reports

Furnish a written report citing climatic temperature during application of fog seal, emulsion temperature during application, rate of emulsion application, and any significant observations.

3.5.4 Application

Following preparation of the surface, apply the water diluted asphalt emulsion at the rate determined by table III, in section 3.2.1 of this

SECTION 32 12 36.13 Page 9

UFGS.

3.6 SITE PROTECTION

During applications, protect adjacent buildings, structures, vehicles, manhole covers, inlet grates, and trees to prevent being spattered or marred.

3.7 TRAFFIC CONTROL

Protect freshly placed coatings from damage by traffic. Provide sufficient warning signs and barricades to prevent traffic over freshly treated surfaces. Protect treated areas from traffic for at least 24 hours after final application of coatings, or for such time as necessary to prevent picking up. Provide warning signs and barricades for proper traffic control, in accordance with MUTCD.

-- End of Section --