The Influence of Coffee Husk Ash as a Filler on the Performance of Bituminous Concrete Mix

Table 5

Physical properties of the 60/70 penetration bitumen grade.

Property	Units	Test method (AASHTO)	Test results	ERA limits as per specification
Penetration value (25°C)	0.1 mm	T 49 [20]	66.50	60–70
Ductility test	Cm	T 51 [21]	Full scale	Min 75
Softening point test	°C	T 53 [22]	48.9°	42–51
Solubility	%	T 44 [23]	Full scale	Min 75
Specific gravity	--	T 228 [11]	1.02	1.05