Collaborative Study With Four Point Bending Devices In Europe

Round Robin Test With Three Reference Beams – Final Report By A.C. Pronk ABSTRACT Determination of the stiffness modulus and fatigue characteristics of a bituminous mix are important factors in pavement design. In the European standards the Four Point Bending test (4PB) is one of the devices permitted for the determination of these properties. The procedures for the back calculation of stiffness modulus and strain from the measured force and deflection are well...

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Top 10 Facts about Superpave Gyratory Compactor

Top 10 Facts about Superpave Gyratory Compactor

1. BUILT TO LAST The build quality is second to none, with 20mm thick side plates, heavy duty tie bars and an extra strong frame the machine will stand the test of time. Weighing in at 500kg the machine demonstrates superb rigidity to avoid unwanted flex, thus eliminating variability in results often seen on cheaper less rigid machines. All external surfaces are either powder coated of plated to an high quality level to provide durability that will last a lifetime. The...

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20 Years East Midlands Chamber Membership

Cooper Research Technology takes pride in having a great working relationship and being a member of East Midlands Chamber (Derbyshire, Nottinghamshire and Leicestershire) for the last 20 years. The East Midlands Chamber (Derbyshire, Nottinghamshire and Leicestershire) is the second largest chamber of commerce in the United Kingdom and has a growing membership of more than 3,800 businesses and 3,000...

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Pendulum Slip Tester

The pendulum slip test was originally developed to simulate the action of a slipping foot. The method is based on a swing dummy heel, which sweeps over a specified area of flooring (just making contact with the surface) in a controlled manner. The slipperiness of the flooring has a direct influence on the pendulum value obtained (known as the Slip Resistance Value (SRV) or PSV (Pendulum Slip Value) with high CoF values slowing down the pendulum, reducing the distance it...

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