Asphalt Prime Coat Application

  • US8158696B2 - Asphalt prime coat - Google Patents

    An environmentally friendly composition and related methods of use and production of an asphalt prime coat, suitable for application to a base road structure, are described herein. The composition includes an asphaltine, and an emulsion of a natural hydrocarbon resin mixed with a penetrating component, which can include a very limited quantity an organic solvent, or can omit organic solvents.

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  • Use of Prime Coat - vaasphalt.org

    At one time it was thought that a prime coat was an essential element of good asphalt pavement construction. However, asphalt prime materials and the gradation of aggregate bases have changed over the years and applications of prime are no longer necessary for most asphalt pavements.

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  • Emulsions | Ergon Asphalt & Emulsions, Inc.

    Penetrating PrimeAn application of emulsion to an absorbent surface to prepare an untreated base for an asphalt surface. The prime penetrates or is mixed into the surface of the base and plugs the voids, hardens the top and helps bind it to the overlying asphalt course. Emulsion is applied to the roadway or surface without any cover material. AE-P

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  • Tack Coats - Pavement Interactive

    Application Rate. Tack coat application should result in a thin, uniform coating of tack coat material covering approximately 90 percent of the pavement surface (Flexible Pavements of Ohio, 2001 [2]). To achieve this result, application rate will vary based on the condition of the pavement receiving the tack coat.

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  • Surface King Tack & Prime Coat Applications With Asphalt ...

    Prime coats are often deleted if no wet weather is anticipated and the base can be covered within seven days. Prime may not be necessary if the HMA is greater than 100 mm (4 in) thick. Prime coat increased the bond strength at the interface between a compacted base and asphalt layer over that of no prime coat.

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  • how to apply a tack coat - Home | For Construction Pros

    Jul 16, 2014· Home Asphalt How to Apply Tack Coat How to Apply Tack Coat July 16, 2014 Improper application of tack coats, like this tack that was applied by hand using a …

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  • TxDOT Specifications - dot.state.tx.us

    312 - PRIME COAT (CUTBACK ASPHALTIC MATERIAL AND SAND) SPECIFICATION REQUIREMENTS 1) Limits, areas and/or locations must be shown on the plans. 2) Type and grade of cutback asphalt must be shown on the plans. 3) The rate of application can be shown on the plans or can be as directed by the Engineer. OPTIONAL REQUIREMENTS None

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  • 607 - ASPHALT PRIME COAT SECTION 607 ASPHALT …

    c. Temperature of Asphalt Materials at Time of Application. Apply asphalt material at the temperature specified in TABLE 601-1, or included on the producer’s Bill of Lading. d. Prime Coat. Apply the prime coat to earth subgrades, water-bound base courses and subbases as soon as practicable after they have been prepared and are sufficiently dry.

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  • Section 3: Pavement Surface Preparation - Search

    3.2 Prime Coat - Flexible Pavements For flexible pavements, the graded subgrade or the top granular base layer may be prepared with a prime coat. A prime coat is a sprayed application of a cutback asphalt or asphalt emulsion (AE) applied to the surface of untreated subgrade or base layers.

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  • To Prime or Not to Prime ... That is the Question

    A prime coat is an application of an asphalt cutback or emulsified asphalt to a prepared base. The base can be either a subgrade or a base rock. Prime functions as a protector from rain for both ...

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  • Hot-Mix Asphalt - Prime Coat (BMPR)

    HOT-MIX ASPHALT – PRIME COAT (BMPR) Effective: April 25, 2014 Revise Note 1 of Article 406.02 of the Standard Specifications to read: "Note 1. The bituminous material used for prime coat shall be one of the types listed in the following table. When emulsified asphalts are used, any dilution with water shall be performed by the emulsion producer.

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  • Asphalt Pavement Construction - Asphalt Institute

    At one time it was thought that a prime coat was an essential element of good pavement construction. However, in recent years some engineers have eliminated the use of a prime, especially when asphalt layer(s) (surface and/or base) is 4 inches or more in thickness.

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  • 3.6 BITUMINOUS PRIM E COAT - rhd.gov.bd

    preparation of the surface and furnishing and placing the materials and application of blotting materials including all labour, equipment, tools and incidentals necessary to complete the work prescribed in this Section. Pay item shall be: 3/6/1 Bituminous Prime Coat (plant placed) Square Metre or 3/6/1 Bituminous Prime Coat (hand placed) Square ...

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  • Asphalt Prime Coat, What is Asphalt Primer? Why its ever ...

    The shear strength of the final asphalt product is affected by the quality of the asphalt prime coat applied. Asphalt Prime Coat is also termed as emulsified asphalt, water diluted asphalt and Cutback aliphatic spray.Recently I have got the chance of working on a highway project somewhere in a mountainous cold-weather region.

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  • Tack Coat Calculator - Tip Top Tack Coat.com

    Tack Coat Calculator. We have set up this tack coat coverage calculator so you can quickly calculate how much tack coat to buy for a specific area with a desired application rate. Change a factor and the calculator will re-figure the quantity to use. If you are on a job site, this website is …

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  • Frequently Ask Questions | Asphalt Enterprises Atlanta, GA

    A prime coat is an application of a low viscosity asphalt to a granular base in preparation for an initial layer (or surface course layer) of asphalt. The purpose of the prime coat is; to coat and bond loose material particles on the surface of the base, to harden or toughen the base surface to provide a work platform for construction equipment ...

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  • Prime and Tack Coat 04-27-06 - hawaiiasphalt.org

    applicability and benefits of prime and tack coat, prime and tack coat effectiveness, materials used and when and where they are used. CFLHD’s current construction specifications were compared with best practices determined from the literature and phone surveys of …

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  • Eprime | Ergon Asphalt & Emulsions, Inc.

    The Foundation For A Successful Road. ePrime is an environmentally friendly, solvent-free, quick-curing prime coat that penetrates the road base and protects the underlying layers from wet weather by providing a temporary waterproof barrier. Additionally, ePrime promotes a strong bond between the base and the subsequent asphalt treatments.

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  • March 2018 No. 805(I) SPECIFICATIONS FOR APPLYING PRIME ...

    7.1 Prime Coat The Department will supply emulsified asphalt for use as a prime coat. The prime coat shall be applied to the prepared base at such locations and rates of application as are specified by the Engineer. SS-1 when used as prime shall be road mixed into th e top 25 - …

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  • HOT MIX ASPHALT – PRIME COAT (BDE)

    HOT MIX ASPHALT – PRIME COAT (BDE) Effective: November 1, 2014 Revise Note 1 of Article 406.02 of the Standard Specifications to read: ... application. The prime coat shall be applied uniformly and at a rate that will provide a residual asphalt rate on the prepared surface as specified in the following table.

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  • What is the Difference Between a Prime Coat and Tack Coat?

    Some people believe that a prime coat is only makes the tack coat more adhesive and nothing more. A prime coat is a coating applied directly to a prepared base before additional layers of support or coating. Prime coat asphalt preparation is a vital element, as it directly affects the shear strength of the final asphalt product.

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  • Use of Prime Coat – Asphalt Pavement Association ... - APANM

    Use of Prime Coat At one time it was thought that a prime coat was an essential element of good asphalt pavement construction. However, asphalt prime materials and the gradation of aggregate bases have changed over the years and applications of prime are no longer necessary for most asphalt …

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  • What is the difference between tack coat and prime coat ...

    Prime's purpose is to protect the base from rain and light traffic, when the paving will be delayed. A prime coat is an application of an asphalt cutback or emulsified asphalt to a prepared base ...

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  • Tack Coat And Prime Coat Applications With Asphalt ...

    Tack Coat And Prime Coat Applications With Asphalt Emulsions What is tack coat? Tack coat (also known as bond coat) is a light application of asphalt emulsion between hot mix asphalt layers designed to create a strong adhesive bond without slippage. Heavier applications may be used under porous layers or around patches where it also functions ...

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  • EarthBind-100 Application Rates - globalstabilization.com

    EarthBind-100, EB-S Application Rates and Procedures for Topical, Shallow and Deep Stabilization, Recycled Asphalt Products, Prime Coat (RAP), Mining Haul Roads. The following application procedures are for general information purposes and specific application rates and methods may change depending on soil type and end use conditions.

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  • NDDOT Construction Conference Prime Coat Feb. 28, 2018

    Prime Coat NDDOT Construction Conference Feb. 28, 2018. ... Prime Coat Definition: A sprayed application of asphalt applied to a base course or untreated material ... asphalt layer over that of no prime coat. The reported differences were not always statistically significant .

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  • Basics of Prime Coat and Tack Coat in Road Construction ...

    Dec 20, 2018· Prime Coat. The layer between Asphalt Course and Crushed Aggregate Base Course (CABC) is called Prime Coat. Its purpose is to bind the loose aggregates of CABC so that it can be prepared for subsequent construction activity of laying Asphalt layer.

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  • UFGS 32 12 13 Bituminous Tack and Prime Coats - WBDG

    2.1 PRIME COAT 2.1.1 Cutback Asphalt 2.1.2 Emulsified Asphalt 2.2 TACK COAT ... 3.7.3.2 Prime Coat Trial Application Rate 3.7.4 Sampling and Testing During Construction 3.8 TRAFFIC CONTROLS ... SECTION 32 12 13 BITUMINOUS TACK AND PRIME COATS

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  • PRIME COAT AND TACK COAT AND THEIR PURPOSE IN ROAD ...

    Sep 25, 2017· Prime coat also acts as a binder for Asphalt and CABC. However excess Prime Coat, particularly if it has formed a pond, can result in ineffective bonding between CABC and Asphalt …

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  • Tackling tack coats | Asphalt magazine

    Again, if a paving grade asphalt is used as a tack coat, no break or set time is required as the paving grades have no water in them. What is the optimal application rate for a tack coat? A variety of factors have been identified that influence the optimal application rate for an emulsion.

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