thickness of tack coat

When is a Tack Coat Necessary?

The black tack coat is clearly visible at the interface between the top layer and an old asphalt concrete layer below The heat generated during the coring probably melted the tack coat, causing it to smear over the core hole and appear thicker than it really is The properly applied tack coat has bonded the upper layer to the lower one.

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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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What is standard E-coat thickness?

Apr 15, 2009· However, thickness can be achieved from 15 - 30 microns consistently; depends upon the component shape & customer requirements E-coat thickness can be controlled with the following parameters mainly 1 Concentration of the paint (Non Volatile content) 2 DC Voltage 3 Process time 15 Micron thickness E-Coat can easily withstand 480 hours Salt.

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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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Highway Waterproofing

Bridge Preservation™ Bridge Deck Membrane is applied through specialized spray equipment, and is typically applied to a thickness of 80 mils Aggregate Top Coat To maximize adhesion between the waterproofing membrane and asphalt overlay, BD Top Coat™ is applied with an aggregate broadcast.

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Tack Coat Emulsion Volume Calculator

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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Poor Tack Coats Are Killing Our Roads: Why?

Oct 13, 2016· It was found that reducing tack coat coverage from to 50% of the application area resulted in a 50% - 75% loss of bond strength! In fact, the same study showed that doubling the tack coat (in thickness) doesn’t really improve bond strength WHEN incomplete coverage or damage/removal of the tack coat occurs during the construction.

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Category:408 Prime Coat

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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Tack Coat Best Practices

Tack Coat Best Practices FHWA Cooperative Agreement Subtask Intelligent Compaction This is the third of a series of 4-hour workshops that the Asphalt Institute is putting on in cooperation with FHWA.

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Use of Prime Coat and Tack Coat in Asphalt Paving

Use of Prime Coat and Tack Coat in Asphalt Paving Conference and Trade Show -2013 September 9 -12, Ottawa, Ontario , Tack-Coating Systems , Thickness Cost Tack-Coat (European) 02 to 04 yes limited no some ≥ 40 mm ** Tack-Coat.

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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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What Is the Function of a Tack Coat? (with pictures)

Aug 10, 2019· The thickness for the layer of tack coat that is applied as well as the volume of material that is needed to do an adequate job has been precisely quantified as of 2001 based on the type of road surface on which is being worked When the road surface is a new construction of HMA, 003 to 004 gallons per square yard (014 to 018 liters per.

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Minimum Tack Coat Spray Rates for Original and Diluted

Use caution when the tack coat spray rate is above 015 gallons per square yard because of the possibility for tack coat puddling and tack coat runoff Note 3 As spray rates are “minimum”, they are rounded up to the nearest 001 gallon per square yard Calculated rates are based on volume at 60 degrees Fahrenheit and 57% binder residue.

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Tack Coat Guidelines 1-09

tack coat application rates, how to sample and test tack coat, and how to measure and pay for tack coat The guidelines do not address the chemistry of tack coat materials, storing and , Total Thickness Shown on Plans Number of Layers 025 foot or less 1 026-050 foot 2 051-075 foot 3.

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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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Prime and Tack Coat 04-27-06

The objective of this study was to produce a prime and tack coat guide publication developed for project development and field personnel to provide decision-making guidance on how to use, when to keep, and when to eliminate prime and tack coats , Pavement Thickness:,14 Traffic/Base Stability.

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Frequently Ask Questions

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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Surface Preparation

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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Surface King Tack & Prime Coat Applications With Asphalt

Tack coat should be applied in a thin coat and uniformly cover the entire surface, including all vertical surfaces of joints and structur Too little tack coat can cause debonding and too much tack coat can cause slippage If possible, all traffic should be kept off tacked surfac Tack should be applied to old existing HMA surfaces and PCC.

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Testing of Bond Coat Emulsions

Testing of Bond Coat Emulsions August, 2012 , -0015” thickness of emulsion is drawn down on the felt paper - wide , -At testing interval, 10 lb wheel with 4” diameter rubber (cam-lock) rings are rolled across the tack coat onto poster board paper placed.

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ALABAMA DEPARTMENT OF TRANSPORTATION

TACK COAT 40501 Description The work under this Section shall cover the furnishing and placing of a bituminous tack coat on an existing surface which is to be covered by a bituminous plant mix material in accordance with these specifications and in reasonably close conformity with the lines shown on the plans or directed by the Engineer.

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