Gradation Design and Performance Evaluation of High Viscosity Asphalt Mixtures

Table 4

Properties of aggregates.

Parameters		Unit	Test results	Technical requirements
Crushing value		%	18.9	≤26
Los Angeles abrasion loss		%	15.9	≤28
Apparent specific gravity	9.5 mm–13.2 mm	—	2.771	≥2.6
	4.75 mm–9.5 mm		2.776
	2.36 mm–4.75 mm		2.775
Bulk specific gravity	9.5 mm–13.2 mm	—	2.741	—
	4.75 mm–9.5 mm		2.736
	2.36 mm–4.75 mm		2.731
Moisture absorption	9.5 mm–13.2 mm	%	0.41	≤2.0
	4.75 mm–9.5 mm		0.51
	2.36 mm–4.75 mm		0.60
Particle concentration of needle-shaped and flake-shaped	9.5 mm–13.2 mm	%	5.5	≤10
	4.75 mm–9.5 mm		13.7	≤15
Solidity		%	0.82	≤12