Grouting sleeve high-temperature medium-tensile testing machine and high-temperature medium-tensile testing method

The invention relates to a grouting sleeve high-temperature medium tensile testing machine and a high-temperature medium tensile testing method.The grouting sleeve high-temperature medium tensile testing machine comprises a high-temperature furnace, a tensile testing mechanism and a grouting sleeve, the tensile testing mechanism comprises a loading head, and the grouting sleeve comprises a sleeve body, a connecting steel bar, a composite cement layer and a concrete protection layer; test piece through holes are formed in the upper furnace wall and the lower furnace wall of the high-temperature furnace, the concrete protection layer is arranged in the corresponding test piece through holes in a penetrating mode, and a connecting section used for being connected with a loading head of a tensile test mechanism is formed at the outer end of a connecting steel bar on the back side of the concrete protection layer; the invention further relates to a high-temperature medium-tensile test method. The deformation amoun