Method for controlling a final pile diameter in a cast-in-place

Details Method for controlling a final pile diameter in a cast-in-place Method for controlling a final pile diameter in a cast-in-place

1993-08-26

1995-03-21

Taylor, Dennis L.

Hydraulic and earth engineering

Foundation

Columnar structure

175 67, 405248, 405266, 405269, 405232, 405237, 299 16, E02D 310

Patent

active

053990560

ABSTRACT:
An apparatus for forming a pile produces a predetermined pile diameter in a cast-in-place pile. The apparatus includes an agitating arrangement which includes a pipe extending longitudinally into the ground, a plurality of agitating blades supported by the pipe for agitating a settable mixture, and a plurality of nozzles respectively disposed on and supported by respective ones of the agitating blades. Each of the plurality of nozzles produces a directional jet flow of liquid. Also, an arrangement is provided for supplying liquid under pressure to each of the plurality of nozzles. At least two of the plurality of nozzles are disposed such that the two nozzles are spaced apart a predetermined distance along the longitudinal direction of the pipe, and are oriented such that fluid flow from the two nozzles intersects, as viewed along the longitudinal axis of the pipe, at a predetermined radial distance from the pipe, forming a cross jet flow at the predetermined radial distance to establish an outermost mixing of hardener and settable mixture, thereby forming a final hardened pile diameter at the predetermined radial distance.

REFERENCES:
patent: 1853379 (1932-04-01), Rotinoff
patent: 3851490 (1974-12-01), Matsushita
patent: 4433943 (1984-02-01), Pao Chen
patent: 4640649 (1987-02-01), Nakanishi
patent: 4850440 (1989-07-01), Smet

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