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Micro Piles |
Pressure Grouting |
Rock Anchors |
Permeation Grouting
Soil Nailing |
Compaction Grouting |
Micropiles |
Injection Grouting |
Chemical Grouting
Our
techniques apply when adding new structures:
especially
rock anchor,
microfine cement,
soil nailing,
micropile
installations for
foundation support.
We
specialize in
slope stabilization,
anchors,
permeation grouting,
foundation repair
and support,
grouting,
soil nails,
rock drilling,
micropile installations, and
sinkholes. We
use a
problem-solving approach geotechnical
architecture of buildings, bridges,
water plants, sewage plants, tunnels,
sinkholes,
caisson,
shoring,
underpinning,
agriculture, and
roads
construction. We
are experienced in these applications:
micro piles,
sinkhole repair,
permeation grouting, pressure
grout,
soil nails,
chemical grouting,
micropiles,
compaction grout, and
rock anchors.
Our specialties are
rock anchor,
acrylamide and
compaction grouting,
mini piles,
sinkhole repair,
micropiles,
acrylamide grouting, and
soil nailing.
We will continue to dedicate ourselves to
excellence,
including
insurance mortgage, in our performance, in our
integrity, and in our relationships with our
customers. We will carefully weigh our
decisions, actions, and results to make sure
that we remain the most trusted name in the
geotechnical contracting industry. Please
visit our website
http://www.rembco.com/.
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JULY
1997
Slurry Displacement Piles
9-26
CALTRANS FOUNDATION MANUAL
Equipment
The equipment used to construct CIDH piles by the slurry displacement method is not much
different than that used to construct CIDH piles by ordinary means. However, there are some
differences in the drilling tools, drilling techniques, cleaning techniques, and use of casing.
The primary reason that modified drilling tools and drilling techniques are used has to do
with the way drilling slurries work. The drilling contractor must be careful not to do
anything that would disturb the positive effective stress provided by the drilling slurry on the
sides of the drilled hole. The drilling tool can produce rapid pressure changes above and
below it, similar to the effect of a piston, if it is lifted or lowered too quickly. When these
pressure changes are produced, the drilled hole can collapse (Figure 9-14). This problem
can be remedied through the use of drilling tools that allow the drilling slurry to pass
through or around the tool during lifting and lowering. For augers, special steel teeth are
added to overbore the drilled hole so the diameter of the drilled hole is larger than the
diameter of the auger. For drilling buckets and cleanout buckets, special steel teeth are
added to overbore the drilled hole, or the bucket itself may be vented. Even with these
modifications, the drilling technique must be modified so that the drilling tool is not
lowered or raised too rapidly through the drilling slurry.