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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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Cast-In-Drilled-Hole Piles
JULY
1997
6-11
Pile Defects
The drilling problems mentioned previously, if not corrected, can cause CIDH piles to be
defective. There are also problems that can occur during concrete placement or casing
removal that can cause defective CIDH piles.
The following drilling problems can cause pile defects:
ITEM
DRILLING PROBLEM/PILE DEFECT
1
The Contractor does not clean off the bottom of the drilled hole with a
cleanout bucket. This can result in the pile bearing on soft material. For
CIDH piles designed for end bearing, this flaw can seriously compromise the
value of the pile. This defect is shown in Figure 6-11.
2
The Contractor uses a tapered auger to advance the drilled hole to the
specified tip elevation and does not flatten the bottom of the hole with a
cleanout bucket. This can result in concrete crushing at the tip of the pile,
which would reduce its capacity and possibly cause differential settlement.
There may also be soft material at the tip of the drilled hole, which would
cause the problems mentioned previously. This defect is also shown in
Figure 6-11.
3
The drilling operation smears drill cuttings on the sides of the drilled hole.
This can result in the degradation of the pile’s capacity to transfer loads
through skin friction. This may be critical if the pile is designed as a
tension pile. This condition is most likely to occur in ground formations
containing cohesive materials. This defect is shown in Figure 6-12.
These problems are preventable. Adherence to the contract specifications and timely
inspection will eliminate most of these problems.