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To Prime or Not to Prime ... That is the Question | For ...

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 …

Brief Information About Bituminous Prime Coat ...

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.

BITUMINOUS TREATMENTS, SURFACE COURSES AND …

300-2.1 Prime Coat: For prime coat, use a product listed on the Department's Approved Product List (APL), meeting the requirements of 916-3, or other types and grades of bituminous material if specified in the Contract Documents.

Category:408 Prime Coat - Engineering_Policy_Guide

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 ...

Tack coat- Bitumen Emulsion for tack coat- Asphalt ...

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 …

SECTION 02620 BITUMINOUS PRIME AND TACK COAT 1.1 …

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 …

The procedure of prime coat application and testing ...

Application of Bituminous Primer: The prime coat shall be applied at the rate as per project specification required per Square meter. Immediately before applying the prime coat, all loose material dirt, clay, or other objectionable material will be removed from the surface.

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

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.

How do you calculate the spray rate of asphalt 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.

Prime Coat Calculations for IDOT | Hildebranski.com

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 ...

STATE OF TENNESSEE DEPARTMENT OF TRANSPORTATION …

4-402.00 computations for prime coat ... 4-405.01 use of bituminous seal coat (chip seal) along edge of paved shoulder while making lane shifts during construction 4-406.00 computations for bituminous seal coat (split application) 4-411.00 computations for asphaltic concrete surface (hot mix) 4-411.02 raised bituminous rumble strips .

Tack Coat Guidelines

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

CUTBACK BITUMEN PRIME COAT MC-70

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

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

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.

Prime Coat And Tack Coat Using Cationic Bitumen Emulsion ...

Prime Coat with Cationic Bitumen Emulsion: It is an application of low viscous bitumen over a granular base like GSB and WMM, developing it for laying an asphalt mix like dense bituminous macadam on it. The bituminous emulsion material to be used as prime coat shall be such that it can penetrate about ten millimetres deep into the base course.

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.

Prime coat - Mo Civil Engineering

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 ...

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 …

** USE ON ALL PROJECTS INVOLVING PRIME COAT, TACK …

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

How much is the application rate for asphalt prime coat ...

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 …

Best Practices from Six State DOTs

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,

Calculator - Tack Coat Emulsion Volume Calculator - HG ...

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 …

Specification for Prime Coat and Tack Coat

The Prime coat shall be applied uniformly to the surface of the base using a pressure distributor at a rate between 0.65 and 1.75 kg per square meter (For Oman, Standard Specification for Road and Bridge Construction 2010 application rate is 0.8 - 1.75 kg per square meter ) and at a temperature between 50℃ to 80℃ for MC-70 and at a ...

Bituminous Prime Coat Application Rate

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.

PART VII – MISCELLANEOUS ITEM P-602 …

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

1 AND TEMPERATURES 600-6 APPLICATION RATES

2 Apply the prime coat at a rate from 0.20 to 0.50 gal/sy. The exact rate for each application 3 will be established by the Engineer before application, in accordance with the limits shown in 4 the Approved Product List referenced in Article 600-2. 5 The required rate of application of asphalt materials will be based on the volume of material

Section 412 Bituminous Prime

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.

STANDARD SPECIFICATIONS AND CODE OFFOR PRIME AND …

(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 ...

Guidelines for Using Prime and Tack Coat (Complied from ...

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 …

ITEM P-602 BITUMINOUS PRIME COAT

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 …

Construction Division Materials and Pavements Section

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 …

PART VII – MISCELLANEOUS ITEM P-602 BITUMINOUS …

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

404 BITUMINOUS TREATMENTS

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.

Asphalt Pavement Construction - Asphalt Institute

You want to accomplish a very uniform application of about 0.03 to 0.05 gal/sy of residual asphalt on the layer to be tacked (a paint job, so to speak). Slow-setting emulsions generally have a residual asphalt content of about 2/3. Therefore, an application rate of 0.10 to 0.15 gals/sy of the diluted material will give you the 0.03 to 0.05 gals/sy.

Item 310 Prime Coat - ftp.dot.state.tx.us

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.

Prime Coat, Tack Coat and Seal Coat | …

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.