補修･補強 (1)

[V-384] Study of the accelerator for spraying concrete

*石関 嘉一¹ (1. 株式会社大林組)

Keywords:Shotcrete, Powders accelerator, Liquid accelerator, Structure, Dust, Rebound

Construction by the automation is considered as a substitute of the experienced engineers.Therefore automation is possible, and construction with the shotcrete which added a usable accelerator is expected early.The shotcrete of the study purpose says that high strength is necessary in a short time. In addition, finish performance is found. There is less discharge than around 3m3/h and normal shotcrete , too. Therefore the examination of a new accelerator was necessary
This report carried out the shoting examination using the indoor examination and shot machine and inspected the properties of matter of the accelerator. As a result, I was able to find an appropriate accelerator.