TRI’s friction laboratory features 5 large scale direct shear boxes, with a further 30 large scale boxes available in the USA. Our loading capacity ranges from (10 -1500 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 (5-50 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 ASTM D5321
• Soil-geosynthetic interfaces ASTM D5321 & ASTM D6241
• Internal GCL shear and GCL interfaces ASTM D6241