Title:
Centrifugal Shotcrete for Foundation Construction
Author(s):
Yuji Nagano; Masataka Uozumi; Hikaru Takeuchi; and Antonio Nanni
Publication:
Concrete International
Volume:
25
Issue:
9
Appears on pages(s):
43-48
Keywords:
DOI:
Date:
9/1/2003
Abstract:
This article describes a novel and effective method for lining boreholes with cement-based mortar. The method consists of spraying the borehole wall with a rapid-set admixture-activated mortar delivered by a piece of equipment specifically designed for this task. The operational principle of the equipment is that of the centrifugal force generated by a rotating impeller allows the mortar to uniformly cover a cylindrical surface. The technique, defined as Centrifugal Shotcreting (CS), has been effective in many pile construction-type projects and has potential for lining larger boreholes as well as tunnels. For pile borehole stabilization, the CS method may be considered an improvement of the traditional Chicago Method, with significant benefits in terms of constructability and performance of the pile.