Adhesive Property and Road Performance Evaluation of Asphalt Overlay Pavement with Geotextile Interlayer

Table 4

The experiment program for the direct-shear test.

Items	Experimental group			Reference group
	1#	2#	3#
Tack coat types	Emulsified asphalt	70# asphalt	SBS-modified asphalt	Emulsified asphalt
Interlayer structure		NWPG		—
Spraying quantity (kg/m^2)	0.6, 0.9, 1.2, and 1.5	0.3, 0.6, 0.9, and 1.2	0.3, 0.6, 0.9, and 1.2	0.4
Spraying times	1	1	1, 2	1
Mixture paving temperature (°C)	160	160	140, 160, and 180	160
Soaking time (h)		0, 24, 48, and 96
Test temperature (°C)		5, 25, and 45