An improved system for cutting pavement into chunks for excavation is disclosed. A plurality of transversely spaced blade elements are provided with forwardly directed cutting edges, the cutting edges on adjacent blades having alternating downward and upward inclinations. The blade elements are attached to a frame so that the elements are reciprocable forwardly and rearwardly. The frame is motivated so that the cutting edges of the blade elements intersect the edge of the pavement. A resonant drive supported by the frame has a vibratory output coupled to the blade elements to drive the blade elements intermittently forwardly and against the pavement. Adjacent cutting elements force the pavement upwardly and downwardly respectively to break the pavement into chunks.
