ABSTRACT
According to national specifications and thus by maximum grain size, three types of asphalt wearing courses can be distinguished : Dmax=10mm Bl, Fl, US1 Dmax = 11 mm Al, CRO, CHI, CH2, D2, N, NL3, SLO Dmax=12mm H1,H2, II, SI
• one aggregate gradation mixture was made by CRO, D2, HI, SI, US1 : CRO with exponent value m = 0.45 according to Talbot function. D2 designing the average value of lower and upper standard grades at
sieve size of 2 mm. HI according to results of previous tests. SI with grade close to lower limit grade of national specification. US1 with grade close to Talbot function with exponent 0.45. II
• two aggregate gradation mixtures were made by B1, CH2 : B1 one mixtures for grading according Talbot.
