The Portable Pendulum Skid Resistance Tester measures skid resistance when a rubber slider on a 20in (508mm) pendulum arm contacts a test surface. A drag pointer on a 0—150 scale measures friction. The unit quantifies the potential of automotive tire skidding on road pavements and evaluates skid resistance of surfaces and polishing tendencies of aggregate samples prepared on an Accelerated Polishing Machine. Adjustments to the arm position and base maintain a true circular path when operated on sloping road surfaces. A supplementary 0—10 scale is included for work using Small Sliders.

Sliders are made with a graded rubber strip bonded to an aluminum backing plate. Gilson supplies Mounted Large or Small Sliders mounted to aluminum plates and Large or Small Unmounted Pads; sliders and pads are sold separately. 3in (76mm) wide Large Sliders are recommended for field testing of road surfaces. The 1-1/4in (32mm) wide Small Sliders are for laboratory testing of polishing wheel specimens. The Laboratory Base Plate is required for laboratory testing of specimens and sold separately. The base plate is 25x19x2in (635x480x50mm), LxWxH, including a specimen mounting block. Accelerated Polishing Specimen Molds also available.

The Skid Tester comes with a setting gauge, clear ruler for sliding length verification, wrenches for assembling the unit, soft-bristle brush, spray bottle, folding stool for field use, three metal feet for the tester legs, and a 29x29x13in (730x730x330mm) WxDxH rugged carrying case to hold all the components. The unit is also supplied with instructions, a manufacturer’s five year warranty and a traceable certificate of calibration. Order 6x24in (152x610mm) No. 60 grade silicon carbide Slider Conditioning Cloth in packs of ten to condition sliders per ASTM E303.

Features:

• Optimal for measuring skid resistance of surfaces and aggregate polishing specimens
• For lab or field use
• Arm position adjustments maintain circular path, even when operated on sloping surfaces

Included Items:

• Pendulum Skid Tester
• Setting Gauge
• Clear plastic ruler
• Wrenches
• Thermometer
• Brush
• Spray Bottle
• Folding Stool
• Three Skid Tester Feet
• Carrying Case
• Traceable calibration certificate

Portable Pendulum Skid Resistance Tester is 28.3x28.7x8.7in (720x730x220), WxDxH.

Meets Test Methods:
AASHTO T278
AASHTO T279
ASTM D 3319
ASTM E 303
BS 812-114
BS EN 1097-8