Rutting Resistance of Hot Mix Asphalt Containing Coarse Recycled Concrete Aggregates Coated with Waste Plastic Bottles

Table 8

Results of t-test to investigate the effect of CRCA percentage on the flow number.

Temperatures	CRCA (%)	Dataset	Levene’s test for equality of variances			t-test for equality of means
			Variance	F	Sig.	t	df	Sig.
40°C	15	Set 1: untreated	Assumed	0.051	0.832	−9.794	4	0.001
		Set 2: treated	Not assumed			−9.794	3.901	0.001
	30	Set 1: untreated	Assumed	0.150	0.718	−16.758	4	0.000
		Set 2: treated	Not assumed			−16.758	3.726	0.000
	50	Set 1: untreated	Assumed	0.062	0.815	−10.815	4	0.000
		Set 2: treated	Not assumed			−10.815	3.880	0.000
60°C	15	Set 1: untreated	Assumed	0.076	0.796	−11.960	4	0.000
		Set 2: treated	Not assumed			−11.960	3.854	0.000
	30	Set 1: untreated	Assumed	0.360	0.581	−25.983	4	0.000
		Set 2: treated	Not assumed			−25.983	3.413	0.000
	50	Set 1: untreated	Assumed	1.039	0.366	−44.140	4	0.000
		Set 2: treated	Not assumed			−44.140	2.755	0.000