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

Table 2

Physical requirements for aggregates as per specifications.

Test property	Test method		Test results				Recommended values
	AASHTO	CEN EN	13–19 mm	5–13 mm	3–5 mm	0–3 mm
Bulk dry S. G	T 85-91 [18]		2.694	2.718	2.716	2.747	—
Bulk SSD S. G			2.740	2.770	2.769	2.801	—
Apparent SG			2.813	2.859	2.866	2.904	—
Water absorption, %		1097-6 [19]	1.570	1.870	1.926	1.968	2% max
Sand equivalent, %	T 176-86 [20]		76.4	—	—	—	40% min
Flakiness index		933-3 [21]	22	—	—	—	45% max
ACV, %AX		933-5 [22]	12	—	—	—	25% max
LAA, %	T 96 [23]		14	—	—	—	30% max