The application of this asphalt waterproofing layer showed that the drainage performance of slab track system could be improved significantly [20] and the risk of the freezethaw damage could be ...

Application Rate. Tack coat application should result in a thin, uniform coating of tack coat material covering approximately 90 percent of the pavement surface ( ...

feedback at the end of the 2016 Paving Season. ... Some slides came from Dave Johnson (Asphalt Institute). ... document appropriate Tack Application Rate.

Application rates of 0.75 gal/sq yd of high-float emulsion and 75 lb/sq yd of aggregate became the standard mix design “recipe” for most projects. The resulting ...

Tack coats are thin applications of emulsified asphalt used to create an ... the pavement construction if the application rates are not optimized and/or the ...

Determination of Asphalt Tack Coat Rate. SCDOT Designation: SC-T-86 (07/19). 1. SCOPE. This method covers the determination of tack rate using specific ...

Application Fog seals are applied at 0.05 to 0.15 gallons/square yard of the diluted asphalt emulsion. Cost and life expectancy Typical costs are $0.45/square yard in 1999. The expected life of a fog seal is 1 to 3 years. Sand Seal A sand seal is a sprayed application of asphalt emulsion followed by a covering of clean sand or fine aggregate ...

This application rate is calculated by multiplying the residual asphalt content by a factor of 3.0 to determine the required application rate of the 1:1 diluted emulsion. If the residual asphalt content was required to be 0.06 gal. /sq. yd., for example, the application rate of the diluted emulsion would be approximately 3 times as great, or 0 ...

• D977 Specification for Emulsified Asphalt • D2397 Specification for Cationic Emulsified Asphalt • D2995 Practice for Determining Application Rate of Bituminous Distributors 10.4 Asphalt Emulsion The emulsion used for prime conforms to ASTM D977 for SS-1 and SS-1h and to ASTM D2397 for CSS-1 or CSS-1h.

Choose tack coat minimum application rate from Table 2a or 2b based on hot mix asphalt or OGFC and underlying material or planed pavement. 3. The emulsion ...

The rate of application of Prime Coat shall be within a range of 0.80 to 1.30 liters/m2 or as otherwise approved by the Engineer. The rate of application of Tack Coat shall be within the indicated range of 0.30 to 0.68 lit/m2, or as otherwise approved by the Engineer

SS-1h is an anionic asphalt emulsion designed for use as a tack coat for ... Application rates can be varied but generally the higher the application rate the ...

This page provides an introduction and overview of seal coats, which are pavement surfaces that use asphalt binders covered with aggregate. It includes tallies ...

The old specifications simply required an application rate of asphalt emulsion tack (AET) that left a uniform residue rate (RR) of between 0.02 and 0.07 gallons per square yard. In layman’s terms, asphalt emulsion is a combination of asphalt, water, and an emulsifying agent.

Australian Asphalt Pavement Association – 2009. 1 ... The binder application rate will depend upon the size of the proposed aggregate and the traffic it is.

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 ...

26 Dec 2017 ... HMA application rates shown in the table below are the required minimum and maximum rates for each of the specific mixtures. Pavement ...

1 Oct 2020 ... This rate may have to be adjusted after initial application and observation. 454.6.3 Measurement and Payment. Asphaltic materials for tack coat ...

The design method described in this section is based on a modification of the original Kearby method and was first recommended to TxDOT by Texas Transportation Institute in 1981 (Epps et al., 1981). It is still the method most commonly used by TxDOT today. A formal design method such as this can effectively serve to guide inexperienced personnel through the “art” of seal coat design and to train personnel including inspectors, designers, and laboratory personnel. Correction factors for binder ap

Surface Type Residual Application Rate(gsy) New Asphalt 0.020 –0.045 Existing Asphalt 0.040 ‐0.070 MilledSurface 0.040–0.080

May 1, 2008 — Initial acceptance of the PG Binder is based on the primary source appearing ... The flow rate of asphalt binder must be continuously displayed.

Modified Double Seal Paving Sequence (Different Sized Aggregate) . ... low cost pavement surface. ... calculate application rates during Chip Seal Treatment.

If the residual asphalt content of the asphalt emulsion was required to be 0.06 gal. /sq. yd., for example, the emulsion application rate from the distributor would be approximately 1.5 times as ...

Application Rate The emulsified asphalt application rate for the fog seal shall be between 0.015 gal/yd2 for dense graded asphalt pavements to 0.039 gal/yd2 of residual asphalt binder for chip seals with aggregates larger than 1/2 inch. Target rates are shown in Table 2 …

Calculate the amount per square foot. Divide the total costs by the total area. In the example, the amount per square foot of the project is $0.90, since $45, the total ...