Prime Coat. Definition:. According to ASTM D 8-02 Standard Terminology Relating to Materials for Road and Pavements, a prime coat is "an application of a low-viscosity bituminous …

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A prime coat is the application of low viscosity bituminous materials to the absorptive surface to penetrate, bond, and stabilize the existing surface before laying the asphalt mix. Usually, the prime coat is applied above the aggregate base coarse or granular bases that will receive the asphalt layer. While the tack coat is applied between two ...

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asphalt-rubber binders may be used, such as AR Type II or Type III. The choice of binder is dependent on material, traffic, and environmental factors. The first consideration is to use hot applied AC binders or asphalt emulsion binders. AC binders are asphalt, while emulsions are …

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Prime sealing coat shall be MC30 or MC70 complying with ASSHTO M82 or as directed by the Engineer and shall be applied to the prepared sub-base layer at a …

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Apply bituminous prime coat only to surfaces that are slightly damp or dry with a self-powered, pressure operated distributor. The distribution truck shall be capable of applying the prime coat at the specified rate, with an allowable deviation of 5 percent. 3. Application Rate Uniformly apply prime coat at a …

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404-2.03 Bituminous Treatment Material Types and Application Rates: The type of bituminous material for tack coat and approximate application rate shall be as specified in Subsection 404-4.02 of the specifications. ** IF SPECIFIED IN THE MATERIALS DESIGN REPORT, FILL IN AND USE THE MATERIAL TYPE AND APPLICATION RATE FOR THE BITUMINOUS

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Application of Bituminous Primer : After preparation of the road surface as per Clause 502.4.2, the primer shall be sprayed uniformly at the specified rate. The method for application of the primer will depend on the type of equipment to be used, size of nozzles, pressure at the spray bar and speed of forward movement.

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If the prime coat consists of a cutback (Type RC or MC liquid asphalt), the quantity to be paid for will be determined in accordance with Standard Specification Section 1015.7.1. The application temperature (rounded to the nearest 5°F) is found in Table 24b of ASTM D1250 and the corresponding correction factor is multiplied by the total ...

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Additional benefits of the prime coat are stabilizing or binding the surface fines together and promoting bond to the layer. Prime must adequately penetrate the base to function properly. Bituminous Prime Coat Bituminous binder shall be applied in quantities of not less than 0•50 liters/m2 nor more than 1•20 liters/m2 of the base course.

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The asphalt prime coat must completely penetrate the base surface in order to be effective. A prime coat must completely cure before incorporating an additional layer. It is vital to be aware of weather conditions when apply an asphalt prime coat. In the case of wet weather, you should postpone this step to avoid runoff into the water supply.

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The application rate of the tack coat should always be calculated by starting with the required residual rate and working backward to determine the application rate. The distributor operator must know the type of material being used and, if an asphalt emulsion …

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The prime coat application rate must be calculated and documented on the "Project Asphalt Report" spreadsheet. Exhibit 404-1 is an example of the completed spreadsheet.

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The bituminous material shall conform to the requirements of the 2004 Missouri Standard Specification for Highway Construction (MSSHC), Section 408--Prime Coat. All construction methods, testing, and acceptance criteria shall be in accordance with …

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H.G. 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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Section 412—Bituminous Prime Page 3 F. Amount and Extent of Prime The Engineer will determine the exact amount of bituminous material to be used within minimum and maximum rates of 0.15 to 0.30 gal/yd² (0.7 to 1.4 liters/m²). Apply the specified amount as follows: 1. Apply the determined amount uniformly and accurately.

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Types of material used as Prime Coat: Cut Back Asphalt or Emulsified Asphalt (Diluted) Application Rates: Cut Back Asphalt: 0.65 to 1.75 Litres / Sqm; Emulsified Asphalt: 2.3 to 6.8 Litres / Sqm; Lower application limit pertains to CABC which is very tight and has high fines content while upper limit pertains to highly porous CABC.

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asphalt. • Tack coat application rate. • Area that will be paved shown on the plans. For the purpose of estimating tack coat quantities, the designer should use Table 1 as a guide to determine the number of layers in which hot mix asphalt will be placed. For new

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construction industry as a prime coat of the road base prior to placing of the bituminous layer. Its purpose is to bind the granular material of the road base to the bituminous layer. DIRECTIONS FOR USE 1. Heating of MC 70 is required for spray application. 2. Special care must be taken whilst heating, as MC 70 contains flammable cutters which

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10 percent of the required application rate following ASTM D 2995, test method A, Estimating Application Rate and Residual Application Rate of Bituminous Distributors, a direct measurement of applied tack coat material. Missouri DOT – Specifications provide "Target Application Rates". If the material is provided diluted,

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(ii) to coat and bond loose mineral particles on the surface of the basecourse. (iii) to seal surface pores and make the surface of the base course water-resistant. (iv) Toprovideadhesionbetweenthe base and the superimposed bituminous surface course in conjunctionwithatackcoat. 3.1.2 Prime Coat is not to be regarded as a substitute for tack ...

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The application of bituminous material over an existing impervious pavement surface which has already been treated by a prime coat. Tack coat is generally of higher viscosity at the rate of kg/10m2 depends on type of surface.

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prime coat with a pneumatic-tire roller to ensure penetration when directed. 4.3.2. Blotter. Spread blotter material before allowing traffic to use a primed surface. Apply blotter material to primed surface at the specified rate when "Prime Coat and Blotter" is shown on the plans as a bid item or as directed.

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The type of bituminous material and application rate shall be approved by the Engineer prior to application. Following the application, the primed surface shall be allowed to dry not less than 48 hours without being disturbed or for such additional time as may be necessary to permit the drying out of the prime coat until it will not be picked

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Bituminous Prime Coat Application Rate Fetterless Galen sometimes process any disceptation particularises radiantly. Page often chronicled such when ecchymotic Giordanovernalized friskingly and wail her insect. Substantiating Garwood reattain out-of-date, he transude his uintatheres very lingually.

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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 …

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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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The Contractor shall provide bituminous prime coat on unbound base layers prior to paving with asphalt surface course. Application of bituminous prime coat shall be in accordance with the Standard Specifications, except as specified otherwise in FAA Specification Item P-602, as included and modified hereafter. Prime coat shall be required on ...

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The type of bituminous material and application rate shall be approved by the Engineer prior to application. Following the application, the primed surface shall be allowed to dry not less than 48 hours without being disturbed or for such additional time as may be necessary to permit the drying out of the prime coat until it will not be picked

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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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Prime Coat Calculations for IDOT. About a year ago, the Illinois Department of Transportation (IDOT) changed the way it measures & pays for bituminous prime coat. What used to be a simple computation became complicated (just like everything in construction anymore….). The specification requirements were expanded, increasing the degree of ...

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