The utility model discloses a temperature-adjustable electric jacket for concrete detection, which comprises a bottom plate, the top surface of the bottom plate is fixedly connected with a shell, a heating cavity is arranged in the shell, an annular heating ring is arranged at the lower part in the heating cavity, a
temperature control assembly connected with the annular heating ring is arranged in the shell, and the
temperature control assembly is connected with the annular heating ring. A guide column is fixedly connected to one side of the top face of the bottom plate, and a limiting
assembly is slidably connected to the guide column. According to the
glass container heating device, by arranging the limiting assembly, glass containers of different specifications can be limited and fixed, the stability of the glass containers in the heating process is guaranteed, the application range is greatly widened, and the
glass container heating device is high in practicability and worthy of popularization. The hook-and-loop
fastener hook face, the hook-and-loop
fastener loop face and the protection block are arranged, the protection block is bonded and fixed through the hook-and-loop
fastener hook face and the hook-and-loop fastener loop face, the protection block can be disassembled, assembled, maintained and replaced easily, operation is easy and convenient, and time and labor are saved.