Effect of Crumb Rubber on the Moisture and Rutting Behavior of Low-Energy Asphalt and Determining the Best Flow Number Model

Table 9

Multiple comparisons for all models at the stress level of 207 kPa.

(I) group	(J) group	Std. error	Mean difference (I-J)	Sig.	95% Confidence interval
					Lower	Upper
Three-stage model	Fnest model	1056.08485	688.00000	0.526	−1593.5326	2969.5326
	Francken model	1056.08485	711.60000	0.512	−1569.9326	2993.1326
	Stepwise model	1397.06894	−700.20000	0.625	−3718.3839	2317.9839
Fnest model	Three-stage model	1056.08485	−688.00000	0.526	−2969.5326	1593.5326
	Francken model	1056.08485	23.60000	0.983	−2257.9326	2305.1326
	Stepwise model	1397.06894	−1388.20000	0.339	−4406.3839	1629.9839
Francken model	Three-stage model	1056.08485	−711.60000	0.512	−2993.1326	1569.9326
	Fnest model	1056.08485	−23.60000	0.983	−2305.1326	2257.9326
	Stepwise model	1397.06894	−1411.80000	0.331	−4429.9839	1606.3839
Stepwise model	Three-stage model	1397.06894	700.20000	0.625	−2317.9839	3718.3839
	Fnest model	1397.06894	1388.20000	0.339	−1629.9839	4406.3839
	Francken model	1397.06894	1411.80000	0.331	−1606.3839	4429.9839