PRODUCTION METHOD FOR BORED PILE WITH ENLARGED FOOTING

摘要

FIELD: construction, particularly bored piles with enlarged footing or enlargements at the bottom of the pile. ^ SUBSTANCE: method involves drilling well; filling the well with concrete mix and non-detonating composition including fuel and oxidizer; igniting non-detonating composition by applying low-voltage pulse to electric igniter and combusting non-detonating composition in deflagration regime to create camouflet void with following concrete mix hardening. The fuel is solid hydrocarbon selected from polyethylene, polypropylene and polystyrene. The oxidizer is sodium or potassium chlorate. Non-detonating composition is supplied in well before well filling with concrete mix. ^ EFFECT: decreased pile production time due to accelerated concrete mix hardening and improved produced pile quality. ^ 6 cl