Influence of the Chemical Composition of Asphalt and the 3D Morphology of the Aggregate on Contact Surface Adhesion

Table 4

10-level grading standard for asphalt adhesion.

Adhesion classification	Adhesion grade	10	9	8	7	6	5	4	3	2	1
	Stripping rate/%	≤5	5～10	10～15	15～20	20～30	30～40	40～50	50～60	60～70	≥70
Exfoliation description		Asphalt film is intact	Very small amount of peeling off at the edges	A small amount of exfoliation on some surfaces	The asphalt film has partially peeled off, and the exposed area of the aggregate surface is 15% to 30%.		Many asphalt films have peeled off, and the exposed area of the aggregate surface is 30% to 60%		Many asphalt films have peeled off, and the exposed area of the aggregate surface is 30% to 60%		The exposed area of the aggregate surface exceeds 70%