Discussion on solving cementitious grout for rebar sleeve splicing backflow problem during sleeve grouting based on TRIZ theory

In response to the construction technical problem that the grout is prone to back flow during the grouting process of the steel sleeve grouting connection joint of the assembled integral concrete structure, the problem solving process is first analyzed using TRIZ theory, and then the creative solution is obtained using tools such as final ideal solution, causal analysis, resource analysis, contradiction analysis, physical field analysis, and innovative design software. Finally, the creative solution is evaluated and a series of simple and feasible solutions that are worth further research are proposed, such as expanding the grouting sleeve, placing the grouting material in a magnetic field in advance, ultrasonic vibration of the grouting material, and automatic sealing of the grouting opening. This provides ideas for solving the problem of slurry backflow, and also provides a reference for the application of TRIZ theory in the field of civil engineering.