Interface Friction

TRI’s friction laboratory features 2 large scale direct shear boxes, with a further 14 large scale boxes available in the USA. Our loading capacity ranges from (2-500 kPa). Our in-house manufactured low load shear boxes provide our clients with improved testing and repeatability of interface shear strengths under cap and construction loading conditions ( 2-50 kPa).

Continued research in GCL hydration and consolidation, gripping and clamping systems ensures that TRI is the industry leader in interface friction testing.


TRI performs Interface Friction/Direct Shear testing to investigate slope stability:

• geosynthetic-geosynthetic interfaces

• soil-geosynthetic interfaces

•internal GCL shear and GCL interfaces