Permeation Grouting
is the most common and oldest form of
soil grouting. The technique consists
of drilling a hole in the soil, inserting
an injection pipe into the ground and
then pumping any number of liquefied
materials into the problem area. they
How the hole is drilled, what type of
injection pipe is used and what material
is used are all determined by the specifics
of the repair being performed. This
type of grouting is typically limited
to sandy soil conditions since this
type of soil allows the grout to permeate
more readily over a wider are.
Cement
Grouting,the
most common form of Permeation
Grouting, is the injection under
pressure of pumpable Portland
cement based grout into a soil
or rock formation to fill voids
or fractures in the formation.
For example, if a large concrete
floor slab were tilting to one
side, a grout pipe could be installed
under the low side of the slab
where the tilt was occurring.
Grout could be injected under
the slab that would act like a
"hydraulic jack" that
could then raise the slab back
to it's desired angle.
In
other common applications, the
grout is injected, into rock
fractures to improve the stability
of the rock formation. This
is commonly used for pre-construction
site improvement, to arrest
foundation settlements, stop
rocking slabs in warehouses,
repair fractures in machine
bases, rectify sinkhole problems,
lift and level slabs and foundations
and to control soft-ground settlements
in granular soils.
Chemical
Groutingis
another common form of Permeation
Grouting that has gained popular
acceptance to strengthen granular
soils is the injection of chemical
solution grouts that bond the
individual grains together into
tone like masses that are capable
of carrying loads of the structures.
The chemical solutions typically
consist of a base material that
is mixed with a hardening agent
that causes the mix to harden
at a predetermined rate, depending
on the compounds used and length
of set time desired for a particular
application.
Chemical
grouting is also commonly extensively
used in leaking subterranean
structures, to control water
flow, and to limit ground movement
during excavation and construction
( lagging operation), as well
as for footing support, grouted
tunnel support and for pit excavation
below water.
* Use Grout-Tech on your
next commercial project. You will be glad you did!
Georgia Pacific
Hardin Construction
Georgia Institute Of Technology
HCB Construction
Wolf Camera
Beers Construction
Kajima Construction
McKinney Drilling Company
Winter Construction