Ground Improvement Techniques

Ground Improvement Techniques


INTRODUCTION

India has seen increasing growth in infrastructure development in last
decade. The presence of large deposits of weak soil of varying type has necessities the
development & application of various ground improvement techniques which are as
follows.

VIBRO COMPACTION

Vibro-compaction is a deep compaction ground treatment technique for
densifying granular soils in-situ by means of a vibrating probe, or "vibroflot". Shown
below, the vibroflot is a long, slender, hollow tube of cylindrical shape, consisting of two
parts. The lower part, termed the vibrator, is connected by means of a special elastic
energy coupling to the upper follow tubes. The vibrator houses two components,
including a 150 Kw electric motor in the upper part, to drive an eccentric weight in the
lower compartment. Capable of 1,500 to 1,800 revolutions per minute, the vibrator
develops an unbalanced (centrifugal) force of 30 to 50 tonnes, creating vibrations in a
horizontal plane.


SUBSEALING, PERMEATION GROUTING, MECHANICAL JACKING,

CONTACT GROUTING, CHEMICAL GROUTING, UNDER PINNING,

RAPID IMPACT COMPACTION.