With the goal of measuring strain distribution of paved road surfaces, we developed these gauges jointly with the Civil Aviation Bureau of the Policy Research Institute for Land, Infrastructure, Transport, and Tourism, and with Toa Road Corporation. A gauge can be adhered to a paved surface and accurately measure the strain distribution on the surface layer caused by a wheel load.

Patented

• Strain distribution on paved road surfaces can be measured
• Low profile, does not affect passing vehicles
• Lead wires are integrated — excellent noise resistance

The strain generated in the longitudinal direction of pavement as measured by a surface strain gauge and strain as determined by multilayer elasticity analysis are almost identical. Strain generated in a pavement surface can be measured with relatively good accuracy.