Appendix F 3.1 Basic Voids Factor
For single/single seals, Vf is determined from Figure F 3 or Figure F 4 (depending on traffic volume).
For double/double seals, Vf is determined from Figure F 5 or Figure F 6 (depending on traffic volume). The voids relationship in the first application/layer seal of a double/double seal is affected by the use of the smaller aggregate in the second application, which partially fills and therefore reduces the air voids. This is compensated for by using a reduced basic voids factor for this first application/layer.
In all cases, Vf should be read to the nearest 0.01 L/m2/mm.
Figure F 3: Basic voids factor (Vf) for single/single seal – traffic volume 0 to 500 vehicles/lane/day
Figure F 4: Basic voids factor (Vf) for single/single seal – traffic volume 500 to 10 000 vehicles/lane/day
Figure F 5: Basic voids factor (Vf) for double/double seal – traffic volume 0 to 500 vehicles/lane/day
Figure F 6: Basic voids factor (Vf) for double/double seal – traffic volume 500 to 15 000 vehicles/lane/day
