Table of Contents

5.5.1 Single/single Sprayed Seal

A general schematic of the process for determination of binder and aggregate application rates for single/single seals is shown in Figure 5.2.

Figure 5.2: Flow chart for design of a single/single seal

The design procedure is as follows:

  1. Determine design traffic (Section 5.2).
  2. Determine basic voids factor, Vf (Figure 6.1 or Figure 6.2).
  3. Apply voids factor adjustments (Section 6.1.2)
    1. Aggregate, Va
    2. Traffic effects, Vt.
  4. Calculate design voids factor, VF (Section 6.1.3).
  5. Determine basic binder application rate, Bb (Section 6.2.1).
  6. Determine modified binder application rate, Bbm (Section 6.3.1).
  7. Apply allowances
    1. Surface texture, As (Table 6.3)
    2. Binder absorption, Aba (Section 6.2.4)
    3. Embedment, Ae (Section 6.2.3).
  8. Calculate design binder application rate, Bd (Section 6.4).
  9. Determine design aggregate spread rate (Section 6.7.3).