Investigation on the Combined Effect of Fibers and Cement on the Mechanical Performance of Foamed Bitumen Mixtures Containing 100% RAP

Table 1

Basic characteristics of RAP materials.

Parameter	RAP	RAP + filler
Optimum moisture content (%)^1	6	6.5
Maximum dry density (Kg/cm^2)^1	1960	2155
	2.57	—
Residual bitumen content (%)	5%	—

is determined by the modified Proctor method (EN 13286-2).
is determined by the Rice method.