Answer / somaning

By consolidation, compaction, injecting cement slury,
injecting bitumin in soil.

Answer / somaning r pujari

By spreading soil n sprinkling water n rolling over it
layer by layer.

Answer / ihab said

U can increase it by good compaction, the problem shows up
when excess water added to the soil, coz over saturated soil
loses weight and some of its key ingredients, specially
Silica. So, u should add the OWC = optimum water content;
which u get it from Proctor test. However; adding cementious
materials improves the Strength of he soil. but usually in
Pavement Construction, Compaction is no# 1 solution, but if
fails then replacing the existing soil with Rock Fill will
be the solution. By the way, u can use pile foundation in
such cases.

Answer / m.chandra shekar

There are many methods of STABILIZATION SOILS like...
LIME,CEMENT,FLY-ASH,BITUMEN etc..

the STABILIZER is choosen depending upon the TYPE of SOIL...

FOR EXAMPLE: LIME is most commonly used for CLAYEY SOILS...

Answer / ayyappan govindasamy

150mm thick /layer to be spread and every layer proper
compaction to be done
relative compaction valves minimum 98%-100% shall be
required

OMC to be controlled and mixing to be done adequately and
thoroughly

Answer / m.bindu

using geotextiles at different levels
mechanical,chemical stabilisation meyhods
maintenance of OMC and MDD for the particular soil.

Answer / ramir v. agustin

If condition of soil is very poor and higher soil bearing
capacity is needed especially in areas where big structure
or building is to be constructed, soil improvement should
be done.This should be accomplished by excavatiing the area
and and backfilling at least 150mm minimum of road base or
sub grade then subject it to compaction.Also you must know
the MMD(maximum dry density) and OMC (optimum moisture
content of the the soil for backfilling to be used to know
how much degree of compaction you will apply.The no. of
layers and thicknes of soil depends on Load Bearing
requirements.

Answer / shankar

You can use bentonite to strenghtn the soil on urgent basis.
One can think of planting trees to strenghteh the soil for
non construction purposes

Answer / kiran babu t

According to IS code,each layer should not more than 200mm
and that each layer should properly compacted & rolled.
like this manner compaction should be done to increase the
bearing capactiy of soils.

Answer / iamrk1293

The following techniques can be used for improving bearing capacity of soil as per the site condition.

Increasing depth of foundation
Draining the soil
Compacting the soil
Confining the soil
Replacing the poor soil
Using grouting material
----Stabilizing the soil with chemicals-This method of improving bearing capacity of soil is costly and applied in exceptional cases. In this method, chemical solutions, like silicates of soda and calcium chloride is injected with pressure into the soil. These chemical along with the soil particles form a gel like structure and develop a compact mass.This is called chemical stabilization of soil and used to give additional strength to soft soils at deeper depths.

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