Countries

China

Germany

Canada

Japan

America

Codes or institutions

Technical specification for application of geosynthetics in highway (JGT/T D32-2012)

Standard for applications of geosynthetics in hydro-power engineering (SL/T 225-98)

Institute of soil mechanics and geotechnical engineering (EBGEO, 1997)

Canadian geotechnical Society

(1992)

Public Research Center

(2000)

AASHTO Federal Highway Administration

(FHWA, 2001)

The National Association of Concrete Masonry

(NCMA, 2009)

Interfaces parameter (tanφ_GS/tanφ_S)

0.9

0.8

0.5

Pullout:

0.5 - 0.7;

direct shear:

2/3

1.0

Pullout:0.8

direct shear:

2/3

0.65