DEVICE FOR MEASURING PAVING DEPRESSION UNDER DYNAMIC FORCE APPLICATION Russian patent published in 2004 - IPC

FIELD: apparatus for measuring physical and mechanical pavement characteristics.

SUBSTANCE: device for pavement depression measurement comprises vertical guiding means with weight arranged in guiding means so that weight may perform vertical movement. Device also has damper installed below guiding means and weight and vertical pavement displacement transducer. Device is provided with additional vertical pavement displacement transducers, transducer sensing time point of weight contact with damper and microprocessor linked with vertical pavement displacement transducers and with transducer sensing time point of weight contact with damper. Vertical pavement displacement transducers are installed on pavement surfaces and spaced different distances from vertical axis of guiding means. Damper is made as rubber plate, weight is formed as cylinder. Rubber plate thickness is related to weight mass by a given equation.

EFFECT: increased test efficiency and measurement accuracy due to possibility of performing several successive measurements in a single point without testing destructure thereof, improved comprehension of obtained results.

2 cl, 1 dwg