Laboratory Evaluation of   SBS  Modified Asphalt Binder Containing GTR, SIS, and PE

Table 7

Statistical analysis results of the stiffness as a function of addition of SIS, PE, and GTR content (α = 0.05).

Stiffness		PG76 + GTR			PG76 + SIS5% + GTR			PG76 + SIS5% + PE3% + GTR
		0%	5%	10%	0%	5%	10%	0%	5%	10%
PG76 + GTR	0%	−	S	S	S	S	S	S	S	S
	5%		−	S	N	N	S	N	S	S
	10%			−	S	S	N	S	S	N
PG76 + GTR + SIS5%	0%				−	S	S	N	S	S
	5%					−	S	N	N	S
	10%						−	S	S	N
PG76 + GTR + SIS5% + PE3%	0%							−	S	S
	5%								−	S
	10%									−

N: nonsignificant; S: significant.