Prefabricated concrete member and connecting method thereof

(10) CN114427254

(22) 11.06.2021

(43) 03.05.2022

(57) The invention relates to a prefabricated concrete member which comprises a first prefabricated concrete member body and a second prefabricated concrete member body longitudinally connected with the first prefabricated concrete member body, and a protrusion facing the second prefabricated concrete member body is arranged on the longitudinal end face of the first prefabricated concrete member body. Sinking grooves corresponding to the bulges are formed in the longitudinal section of the second prefabricated concrete member; the end, connected with the second prefabricated concrete member, of the protrusion is provided with a plurality of outwards-extending annular alignment holes and buffering holes. The bottom end of the sinking groove is provided with frustum-shaped positioning shafts and buffering shafts corresponding to the alignment holes and the buffering holes respectively. The viscous fluid generated by mixing and reacting the water-soluble expansion material with water is expanded to the connecting gap of the concrete member, and is cured to form a closely-packed polymer, so that the concrete member has better tensile strength and compressive strength, can be quickly connected, does not need secondary pouring on site, and is high in production efficiency; and the shock resistance of the connecting part of the concrete member can be realized.

(71) Zhongjian Science and Technology (Fuzhou) Ltd. Company, CN