Evaluation of Fatigue Behavior of Asphalt Layers Containing Nanosilica Modified Tack Coat

Table 4

Results of 4 PB beam fatigue test up to failure stage (50% of initial flexural stiffness).

Sample type of asphalt mixture beam	Fatigue life at strain level of			Initial flexural stiffness at strain level of
	400	550	700	400	550	700
Unmodified tack coat (UMTC)	9100	4900	2100	2597	2463	2148
Nanosilica modified tack coat (NSMTC)	10700	5625	3300	2598	2486	2185