Device for testing interlaminar shear strength of pavement

The utility model discloses a device for testing interlaminar shear strength of a pavement. According to the utility model, first brackets and a second bracket are mounted on a base; a second fixture is fixed on the second bracket; a drive shaft is mounted on the first brackets; the first fixture is fixed on the drive shaft; a transmission gear is arranged on the drive shaft, and performs transmission through a transmission gear lever; the transmission gear lever moves up and down along limiting holes in two limiting plates. The device disclosed by the utility model is high in measurement accuracy, wide in measurement range, high in stability, convenient to control, and good in data comparability, can directly test shear stress and shear strain of a bituminous mixture, and basically avoids volume deformation, the stress state of a test piece is close to the pure shear state, and the test result can highlight the mechanism that the mixture is subjected to permanent deformation, and is closer to the actual condition. The device is simple in structure, reasonable in price, high in operability and convenient to maintain.