Optimum Design and Performance of Porous Concrete for Heavy-Load Traffic Pavement in Cold and Heavy Rainfall Region of NE China

Table 5

Range analysis of orthogonal test.

Column number	Analysis index
	Ij	IIj	IIIj	IVj	kj	Ij/kj	IIj/kj	IIIj/kj	IVj/kj	Dj
1	21.2	18.8	22.8	14.6	4	5.2	4.7	5.7	3.65	1.55
2	16.6	17.9	21.8	21.1	4	4.15	4.75	5.45	5.275	1.3
3	18.8	18.5	21.8	18.3	4	4.7	4.625	5.45	4.575	0.875