Spray distributors should initially be calibrated according to BS 3136 [8] or BS 1707 [9], BS EN 12272-1 [10] as appropriate. During application the "carpet tile" [10] test may be used to check the rate of spread of the emulsion from bulk distributors (not from integral pavers) and the overall rate may be checked by comparison of the

"Tack coat, including Tack Coat and Non-Tracking Tack Coat materials, when a pay item, will be measured in gallons and will be paid for at the contract unit price per gallon." "When not a pay item the Contractor shall include the cost in the contract unit price for other appropriate items." Sect. 310.04 –Measurement and Payment

Dec 20, 2018· Prime Coat should be left undisturbed for 24 hours so that it seeps down within the CABC and does not form a pond on CABC. Recently engineers are eliminating the use of Prime Coat due to certain studies which indicate that Prime Coat does not play any significant part in stability of pavement structure.

Feb 01, 2018· Prime Coat / Tack Coat Rate of Application / Spreading Test | asphalt |, emulsion, bitumen emulsion testFor more detail visit our website - https://

Prime Coat Test Form. Uploaded by. Margaret Sipatela. (1) found this document useful (1 vote) 2K views 1 page. Document Information. click to expand document information. Description: Weight of the tray (b) gms Weight of the tray with prime (a)gms tray area (sqm) Average of rate of spray (1tr / sqm) Specified rate as per specification:

Estimated Spray Rate : The estimated spray rate of bituminous binder stated in Clause 2 of Annexure MRTS11.1. It is not to be used as an actual designed spray rate. Estimated Spread Rate : The estimated spread rate for cover aggregate or prime cover material stated in Clause 2 of Annexure MRTS11.1. It is not to be used as an actual designed ...

Board Test—described below. Anchor: #i1002292 Determining Design Rates. Aggregate Spread Rate. The Board Test is used to find the quantity of aggregate on a board of known aggregate such that full coverage, one stone in depth, is obtained.

Required paint coat thickness always refers to the thickness after the paint has dried in accordance with SSPC PA-2, "Measurement of Dry Coating Thickness with Magnetic Gages". Coat thickness measurements should be taken at the average rate of one every 25 square feet of painted area.

Oct 10, 2012· 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 …

Tack coat residual rate is the amount of asphalt binder remaining after water has evaporated, while tack coat application rate is the amount of liquid asphalt sprayed by the distributor (Caltrans, 2009). When an asphalt binder is used as a tack coat material, the tack coat …

9/30/2008 AC 150/5370-10D PART VII – MISCELLANEOUS ITEM P-602 BITUMINOUS PRIME COAT DESCRIPTION 602-1.1 This item shall consist of an application of bituminous material on the prepared base course in accordance with these specifications and in reasonably close conformity to the lines shown on the plans.

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

Nov 01, 2019· There is certain specification mentioned in any project for rate of application of Prime coat & Tack coat. For measuring that application rate of Tack Coat & Prime Coat, we shall have a Aluminium or any other suitable light tray with …

Nov 14, 2017· What is a Prime 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 ...

The project plans specify the rate at which the prime coat is applied, and rates will vary from one project to another. Generally, however, medium curing cutback asphalt is applied at a rate between 0.2 to 0.5 gal./SY, and emulsified asphalts are applied between 0.1 to 0.3 gal./SY.

In this Video i have explained how to calculate the quantity of bitumen in prime or Rate of Application of BitumenYou can Watch more videosIS CODES FOR CIVI...

seal surface texture, chip ALD and application rates, enabled the production of a spray rate chart. This, in turn, led to the Transit New Zealand Design Algorithm known as RD286 (NRB 1971): R = (0.138 ALD + e) T f RD 286 where: R = residual binder application rate ( …

Tack-Coating Systems • Tack-coat As per BS 434 (European) →0.2 to 0.4 kg/m2residual binder →Cationic, rapid breaking, 40% unmodified binder →Fluid emulsion for fine spray →Provides tacky surface to initiate gripping of upper layer As per AI, MS-19 …

Flow Rate Calculator. Use this calculator to determine the flow rate of any nozzle at any operating pressure. Inputs to this calculator are the nozzle type, current operating pressure and flow, desired flow or desired pressure. Units: U.S. Metric. Reset.

Spray tack coat uniformly and accurately across the paving width and monitor the rate of spray. Determine the tack coat application rate by road conditions and mix type. Meet the undiluted asphalt emulsion application rate in Table 501-1. Tack coat application rates above the minimum specified in Table 501.1 must be approved by the Engineer.

For a prime coat to be effective it must be able to penetrate into the base course. Typically a light grade of medium curing cutback such as an MC-30 or MC-70 will work well. However, these are cutback asphalts (asphalt cement by combining it with light petroleum oil) and "cure" or harden when the light oils evaporate into the atmosphere.

Minimum spray application rate = 0.05/[(57/100) x (80/100)] = 0.1096 gal/sq yd; Rounded to the nearest 0.01 gal/sq yd, the minimum spray application rate is 0.11 gal/sq yd. Document that the contractor's planned spray rate is not less than the minimum spray application rate for the diluted or undiluted emulsion in the daily report.

HMA Layers Produced with Different Tack Coat Application Rates Using Shear-Type and Tension-Type Tests, Journal of the Transportation Research Board (2012). The fourth test, a direct tension test, while not reported in the literature, was attractive because it offered field portability and a different state of stress for evaluating bond strength.

Actual test temperature shall be noted in the report. 3.3 Impact test. The prime paint coating shall be subject to one impact per ASTM D2794 with 20 inch pounds of direct impact using a Gardner Impact Tester with 1/2″ (12.7mm) diameter ball or punch at room temperature of 70° – 75° Fahrenheit.

(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 ...

Pressure within the distributor must be capable of forcing the tack coat material out the spray nozzles at a constant rate. Inconsistent pressure will result in non-uniform application rates. Temperature within the distributor should be maintained between about 24°C (75°F) and 54°C (130°F).

SPRAYER FOR PRIME/TACK COAT . Properly Done Tack Coat 20-30% more quantity of tack coat for milled surface. ... Test Test Method Requirement * Either of the two is required. ... BUILT-UP SPRAY GROUT. BUILT-UP SPRAY GROUT IS SIEVE CUM % PASSING (mm) COARSE KEY 53 100 - …

Jun 09, 2016· Sec 408.4.2.1 The spray bar on the distributor must be set at a height that results in no overlapping of the material. 408.4.2.2 The prime coat, including any repairs that have been made to the prime coat, must be allowed to cure prior to spreading mix. The prime has cured when it has hardened and penetrated into the base course to the extent ...

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 ...

A prime is an initial treatment, being an application of a primer to a prepared granular base ( Figure 3.2 ). It usually consists of a bitumen and cutter oil or specially formulated bitumen emulsion primer and is placed without a cover aggregate. Penetration of the prime into the base varies, but for granular base materials it is typically 5 to ...

Test Method 312 Nordic Abrasion ASTM C-29 Test for Unit Weight of Aggregate ASTM C-88 Test for Soundness of Aggregates by Use of Sodium Sulfate or Magnesium Sulfate ASTM C-117 Test for Materials Finer than No. 200 Sieve in Mineral Aggregates ASTM C-127 Test for Specific Gravity and Absorption of Coarse Aggregate

Testors Spray Enamel, Clear Dullcote Coat and Clear Glosscote Coat, Two 3oz Cans of Each with Spice of Life Paint Brushes 4.7 out of 5 stars 17 $34.99 $ 34 . 99

Why use prime coat? Prime coats protect the integrity of the granular base during construction and help reduce dust. In the case of a base which is to be covered with a thin hot mix layer or a chip seal for a low volume roadway, priming ensures a good bond between the seal and the underlying surface which otherwise would have a tendency to ...

Sep 25, 2017· Prime Coat: The layer between Asphalt Course and Crushed Aggregate Base Course (CABC) is called Prime Coat. Its purpose is to bind the loose …

penetration rate of prime materials in a sample of the base material to be used on the roadway. This test appears promising but needs more work. The ability of this prime penetration test to help determine the suitability of a prime material for a specific compacted base material should be evaluated.

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