thickness of tack coat

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  • Surface Preparation | Washington Asphalt Pavement Association

    Surface preparation generally takes one of two forms Preparing the subgrade and granular base course for new pavementThis can involve such activities as subgrade stabilization over excavation of poor subgrade applying a prime coat or compacting the subgrade

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  • Techbrief Tack Coat Best Practices fhwadotgov

    Tack Coat Costs A recent Asphalt Institute investigation showed the cost of tack coats on new or reconstructed facilities was 01 02% of the total project costs On the mill and overlay projects tack coat was 10 20% of those project costs If a bond failure occurred and the remedial action was needed

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  • Application Rates and Weights for Estimating Purposes

    specific gravity of 13 Requires 2 applications * If the project uses the FP 03 calculate quantity based on area and use this value in your estimate because the FP 03 pays for the water to dilute

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  • Decker Construction Trackless Tack (NTSS 1HM) Columbus Ohio

    Trackless Tack formally specified as NTSS 1HM is a proprietary emulation tack coat developed by Blacklidge Emusions which is used to bond asphalt pavement layers/lifts together Since the inception of tack coats others in the industry have always used the same products and construction procedures developed decades ago Not at Decker

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  • HOT MIX ASPHALT PAVEMENT DESIGN GUIDE

    TACK COAT A tack coat of asphalt (usually emulsified asphalt) is applied to ensure bond between the existing surface and the asphalt overlay It should be applied in an even thin coat at a rate of application of 05 gallons per square yard with a tolerance of01 gallons per square yard Excessive tack coat can cause slippage or can flush to the

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  • Effect of Tack and Prime Coats and Baghouse Fines on

    Buncombe County where emulsions were used as tack coat had higher occurrence of such distresses compared to Rutherford County where PG64 22 binder was used as tack coat In addition to use of tack coats the asphalt mixes in these counties were prepared by an intermittent purging of baghouse fin

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  • Why Tack Coats Improve Parking Lots and Driveways

    Aug 01 2016· Home Asphalt Why Tack Coats Improve Parking Lots and Why Tack Coats Improve Parking Lots and Driveways and compact it to a thickness of 225 to 3 in and then tack

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  • Best Practices For Full Depth Repair Tack Coat and

    Best Practices For Full Depth Repair Tack Coat and Longitudinal Joint Construction Greg Harder PE Regional Engineer Asphalt Institute NJ Asphalt Paving

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  • GUIDANCE NOTES ON THE USE OF WATERPROOFING

    sufficient thickness and the tack coat not properly applied; ii) moisture saturation in the asphalt surfacing could cause premature deformation RD/GN/033 The Use of Waterproofing Membranes on Concrete Bridge Decks Page 1 of 8 measures on site are provided for reference

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  • Tack Coat Emulsion Volume Calculator HG Meigs LLC

    HG Meigs LLC for 70 years has been a midwest supplier of bituminous products including Asphalt Cements to Asphalt Cutbacks and Asphalt Emulsions We also have our own dedicated truck fleet with distributor trucks available for customer emulsion applications Explore our

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  • Category 408 Prime Coat Engineering Policy Guide

    If the prime coat consists of an emulsion the quantity to be paid for will be determined in accordance with Standard Specification Section 101572 (see Method of Measurement in Tack Coat The quantity will be rounded to the nearest 10 gallons 4082 Materials Inspection for Sec 408

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  • Paving Systems Using Clay Pavers on a Bituminous Setting Bed

    a tack coat of neoprene modified asphalt adhesive Below the setting bed a concrete or asphalt base should be placed on an aggregate subbase The thickness of base and subbase and materials should be based on the application and subgrade conditions

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  • FHWA Hot Mix Asphalt Pavement Guidelines

    a Is the tack or prime coat specified (Spec reference)? YES NO b The tack coat shall be uniformly applied to a prepared clean surface of all contact surfaces including all pavement layers pavement edges curbing gutters manholes and other structur The tack coat shall not be applied to wet pavement surfaces or when the

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  • 32 12 16 Asphalt Paving

    the indicated thickness based on the dimensions neat lines or pay Asphaltic prime and tack coats pavement reinforcing fabric and seal coat will not be measured separately for payment but will be considered included in the square yard measurement for the asphaltic concrete 32 12 16 Asphalt Paving

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  • How Tack Coat Improves Your Asphalt Paving

    Apr 16 2014· Application of tack coat to an existing pavement surface is so simple and inexpensive that its real importance is often overlooked Normally considered an incidental expense tack coat material

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  • Driveways asphaltpavementorg

    For example a total of 3 inches may be placed in two layers each 15 inches thick when compacted A good way to pave a 4 inch pavement is to first place about 3 to 4 inches of loose asphalt and compact it to a thickness of 225 to 3 inches and then tack the surface and

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  • STANDARD CONSTRUCTION SPECIFICATIONS FOR ASPHALT

    SECTION 4002 SEAL COAT Article 21 Description The Work under this Section consists of the performance of all Work required for the construction of a seal coat of asphalt cement and cover aggregate on RAP strip paved and gravel surfac Article 22 Asphalt

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  • TACK SEAL OR BOND Texas A&M University

    TACK SEAL OR BOND You Make The Call Introduction & History Importance of Bond Between Layers Thick application of asphalt/good seal Can help with reflective cracking (SAMI) 14 Non Tracking Tack Coat Author Jerry Peterson

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  • Use of Prime Coat vaasphaltorg

    The refinery was never built but VDOT has stayed with emulsified asphalts (asphalt cement liquefied by suspending it in water) for surface treatment (chip seal) slurry seal tack and prime applications ever since Is a prime coat necessary? At one time it was thought that a prime coat was an essential element of good pavement construction

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  • 34553 03 Design Guide pa asphaltorg

    TACK COAT Refer to page 5 A tack coat of asphalt (usually emulsified asphalt) is applied to ensure bond between the existing surface and the asphalt overlay It should be applied in an even thin coat at a rate of application from 002 to 007 gal/yd2 for asphalt residue Excessive tack coat can cause slippage or can flush to the surface

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  • Pavement Manual Pavement Surface Preparation

    Tack coat application should result in a thin uniform coating of tack coat material covering approximately 90% of the pavement surface (Flexible Pavements of Ohio 2001) To achieve this result application rate will vary based on the condition of the pavement receiving the tack coat

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  • Frequently Ask Questions | Asphalt Enterprises Atlanta GA

    What is the purpose of a prime coat and is it necessary on a new paving project? is 4 inches or more in thickness In many instances prime coats are not used even when surface thickness has been as thin as 2 inch According to studies performed by The Asphalt Institute over the last 20 years few if any pavement failures can be

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  • Stay Mat Asphalt Tack Coat SS 1 | 5 Gallon or Bulk

    Stay Mat Tack Coat can be applied with common sprayer broom mop or squeegee Stay Mat will set up under good conditions within 30 minutes depending on weather and material coating thickness Do not use if rain is imminent when surface is wet or when temperature is below 50°F

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  • Trackless Tack Coat Materials A Laboratory Evaluation for

    TRACKLESS TACK COAT MATERIALS A LABORATORY EVALUATION FOR PERFORMANCE ACCEPTANCE Trenton M Clark PE Former Asphalt Program Manager ia Department of Transportation Todd M Rorrer Assistant Asphalt Program Manager ia Department of Transportation Kevin K McGhee PE Associate Principal Research Scientist

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  • If there is a delay of bituminous laying on top of sub

    After the subsequent compaction is carried out the coat would be interlocked with the bituminous materials On the other hand care should be taken to ensure that excessive coat would not be laid otherwise slippage or shear cracks in the bituminous material would occur due to the relative thick layer of the tack coat applied

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