新材料・新工法（材料）(3)

[V-99] Examination of shotcrete structure using 3D printer outer shell and steel inner shell

〇Yoshikazu Ishizeki¹, Atsushi Takeda¹, Akitoshi Araki², Masahiro Iwasaki², Hajime Sakagami¹, Masaya Nakamura¹ (1.OBAYASHI CORPORATION, 2.Denka Company)

Keywords:Shotcrete, Liquid quick setting agent, Inner shell, 3D printer, Outer shell

At present, the skill is expected to decrease due to the aging population and the reform of working style, and the construction of shotcrete by automation is expected. In constructing the structure by the spraying method, a structure made of shotcrete was constructed using the inner shell made of steel and the outer shell made with a 3D printer. In addition, a loading test of the outer shell of the 3D printer was performed. As a result, it was confirmed that the inner shell structure made of steel and the outer shell structure of the 3D printer can be constructed, and the structure can be established.