Application rate of prime coat

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. What is the purpose of a prime coat and is it necessary on a new paving project? 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. material when prime coat is used to improve coverage and penetration of asphalt material. Apply bituminous coat only when the atmospheric temperature in the shade is 10 degrees C 50 degrees F or above and when the temperature has not been below 2 degrees C 35 degrees F for the 12 hours prior to application, unless otherwise directed.

and paving grade binders; various residual application rates from no tack coat to 0.155 gallons per square yard (gsy); various surface types including old HMA,  14 Aug 2017 The area of treatment and the rate of application of a tack coat shall be based on the plans and specifications after evaluating the actual surface  Broom the surface and clean the loose particles/dust by air compressor prior to the application of prime coat. Normal Prime Coat coverage rate is 0.65 Kg. / m2 to . Applying a bituminous tack coat is an integral part of an asphalt paving The old specifications simply required an application rate of asphalt emulsion tack. Application rate includes both tack coat and water, and residual rate indicates the amount of asphalt binder remaining on the pavement surface after the water has   The influence of tack coat type, application rate and test temperature on the interlayer bond strength (ILBS) have also been studied. Two types of bituminous   When bonded, all layers working together. • Critical that tack materials are applied uniformly at appropriate application rate. • Apply tack coat on all surfaces.

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 rate between 0.8 and 1.2kg/m2 and at a temperature between 60' C and 80' C. Tests shall be carried out on site to determine the rate of spread of the prime sealing coat material.

20 May 2013 3.1 PREPARATION OF SURFACE 3.2 APPLICATION RATE 3.2.1 Tack Coat 3.2. 2 Prime Coat 3.3 APPLICATION TEMPERATURE 3.3.1  Primer for the priming coat of road sealing shall consist of approved "Priming" competent in the use of charts and the rates of application of residual binder,. 3.7.3.2 Prime Coat Trial Application Rate. 3.7.4 Sampling and requirements for bituminous tack and prime coats for over the specified application rate. 7 Mar 2007 Spray application rate of penetration layer: 1,7 litre/m2 (tack coat of 0,7 litres/m2 subtracted from total requirement). Width of road: 3,5 m. By applying a prime coat to an existing granular surface, the following benefits are achieved [2]: granular material, at the desired application rate. Occasionally 

18 Sep 2009 3. (145.2 lb/ft. 3. ) Asphalt Binder. 6.0% by weight of mix. Antistrip. 1.0% by weight of mix. Prime Coat. (Using Asphalt Cutbacks). 0.90 to 2.25 l/m.

Surface King Tack & Prime Coat Applications With Asphalt Emulsions Deleting prime would lessen the amount of liquid asphalt contractors must handle,  Prime coat typically is application of low viscosity Bitumen over a granular base, preparing it for laying an asphalt mixture on it. A prime coat performs several  Precoating. AC-5, AC-10, PG 64-22, SS-1, SS-1H, CSS-1, CSS-1H. Tack coat application rates than hot applied systems since they contain approximately 1/3  Prime coat has a purpose in the pavement construction process, yet many times prime is misused or eliminated during the project. Although most of the time no  ature chamber for 30 min. Subsequently, the UTM was started to apply a load to the shear. device at a rate of 10 mm/min, and  Tack Coat Application Rate—The amount of asphalt binder or emulsion sprayed from the distributor. Section 39 “Hot Mix Asphalt,” of the Standard Specifications 

Prime coat shall be applied at a time when the surface to be treated is dry or slightly damp, when the ambient temperature is above 13ºC and rising, or above 16ºC if falling, and when the weather is dry. 3.6.3.2 Equipment The Engineer may approve Construction equipment and methods (including labour

Prime coat has a purpose in the pavement construction process, yet many times prime is misused or eliminated during the project. Although most of the time no  ature chamber for 30 min. Subsequently, the UTM was started to apply a load to the shear. device at a rate of 10 mm/min, and  Tack Coat Application Rate—The amount of asphalt binder or emulsion sprayed from the distributor. Section 39 “Hot Mix Asphalt,” of the Standard Specifications  (IDOT) changed the way it measures & pays for bituminous prime coat. increasing the degree of surface prep, cleaning & application parameters than with  No separate payment will be made for prime coat under this Section. Include heating equipment and in distributor, for determining rate of application, and for. and paving grade binders; various residual application rates from no tack coat to 0.155 gallons per square yard (gsy); various surface types including old HMA,  14 Aug 2017 The area of treatment and the rate of application of a tack coat shall be based on the plans and specifications after evaluating the actual surface 

By applying a prime coat to an existing granular surface, the following benefits are achieved [2]: granular material, at the desired application rate. Occasionally 

This group includes fog seal, prime coat and tack coat. None of these require design in the usual sense. Ranges of application rates are stated but the actual rate  Application Rates and Weights for Estimating Purposes . Material : Application Rate or Unit Weight ; Aggregate Base . 2225 kg/m. 3 (specified in conjunction with prime coat) 8.0 kg/m. 2 (14.75 lb/yd. 2) Tack Coat (Using Asphalt Emulsion*) Application Rates and Weights for Estimating Purposes 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 rate between 0.8 and 1.2kg/m2 and at a 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 rate between 0.8 and 1.2kg/m2 and at a temperature between 60' C and 80' C. Tests shall be carried out on site to determine the rate of spread of the prime sealing coat material. 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 / Tack Coat Rate of Application / Spreading Test | asphalt |, emulsion, bitumen emulsion test For more detail visit our website - https://www.cons Surface King Tack & Prime Coat Applications With Asphalt Emulsions . Prime Coat. A prime coat performs several important functions. At typically specified application rates, application rate had little effect on interface shear strength. Higher than recommended application rates resulted in slightly lower interface shear strengths.

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 / Tack Coat Rate of Application / Spreading Test | asphalt |, emulsion, bitumen emulsion test For more detail visit our website - https://www.cons Surface King Tack & Prime Coat Applications With Asphalt Emulsions . Prime Coat. A prime coat performs several important functions. At typically specified application rates, application rate had little effect on interface shear strength. Higher than recommended application rates resulted in slightly lower interface shear strengths.