Auxiliary forming device for preparing mortar tensile bonding strength test piece

The utility model discloses an auxiliary forming device for preparing a mortar tensile bonding strength test piece. Four clamping plates, a first sliding groove penetrating through the side wall of the clamping plate is formed in the upper portion of the clamping plate. Every two adjacent clamping plates are connected through an adjusting block. The adjusting block comprises a right-angle steel plate; first threaded holes are formed in the upper portions of the two side faces of the right-angle steel plate, first bolts matched with the first threaded holes are arranged on the upper portions ofthe two side faces of the right-angle steel plate, the first bolts penetrate through the first threaded holes and can move in the first sliding grooves, and the right-angle steel plate further comprises first nuts matched with the first bolts and used for fixing every two adjacent clamping plates. Test block models of different specifications can be realized by matching the adjusting block with the first bolt, and meanwh