Interlayer Working Conditions Classification and Treatment Measures of Airport Asphalt Pavement Overlay

Table 13

Test results of pressure seepage between different layers.

Treatment measures	Waterproof material	Beginning seepage time (s)	Starting time of severe seepage (s)
Asphalt precoating	Ordinary hot asphalt	203	375
	SBS-modified emulsified asphalt	413	494
	SBS-modified asphalt	389	463
Two oils and one aggregate	Ordinary hot asphalt	342	435
	SBS-modified emulsified asphalt	437	563
	SBS-modified asphalt	399	521
Geotextile	Ordinary hot asphalt	>600^1	>600^1
	SBS-modified emulsified asphalt	>600^1	>600^1
	SBS-modified asphalt	>600^1	>600^1
Geogrid	Ordinary hot asphalt	64	102
	SBS-modified emulsified asphalt	131	149
	SBS-modified asphalt	112	165

¹The test is based on 600 seconds and no longer counts for more than 600 seconds.