Field Validation of the Arching Phenomenon of Earth Pressure Cell to Measure Vertical Stress in Flexible Pavement

Earth pressure cell (EPC) is used to measure vertical stresses at different depths of pavement due to traffic loading. Typically, it is considered that this sensor is not affected by arching phenomenon. As the sensor is made up of steel, its stiffness is greater than the surrounding soil materials. Therefore, the sensor may report greater stress for arching action compared to the actual value. This study investigated the arching effect by finite...