Sub Sections:
1
2
3
4
5
6
7
8
9
10
11
12
Pages:
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
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/.
Add Concrete Construction URL
Artistic Business Community Related Construction Industry Computers Education Relevant Entertainment Health Internet Family Recreation Science Shopping Society
|
Slurry Displacement Piles
JULY
1997
CALTRANS FOUNDATION MANUAL
9-37
limited to a 2 to 3 inch radius of concrete around the tip of the probe. Because of the
nature of the data acquired, proper assessment or determination of the existence of
defective concrete or voids is subject to interpretation of the results. Typical testing consists
of 30 second counts taken at 6 inch increments for the whole length of the pile. This
procedure requires about 2-
1
/
2
hours for a single inspection tube in a 100 foot length pile.
Even at this rate, a 48 inch diameter pile containing four inspection tubes would still
require 10 hours to check out, assuming there are no access problems in the tubes.
Pile testing is performed by Caltrans personnel from the Office of Structural Foundations
of the Engineering Service Center and the results, which include a recommendation of
acceptance or rejection, are reported to the Structure Representative in writing. An ex-
ample of these results can be found in Appendix G.
Occasionally, the Office of Structural Foundations will experience a staffing shortage and
may not be able to test the piles. It is important for the Structure Representative to contact
the Office of Structural Foundations well in advance of the need for testing so that the
Office of Structural Foundations can determine whether they will have the staffing neces-
sary to test the piles. If the Office of Structural Foundations is unable to test the piles, the
Structure Representative shall make arrangements for pile testing through the current
service contract. The Office of Structural Foundations can provide information on the
current service contractor.
The Structure Representative has the responsibility for accepting or rejecting a pile based
on the recommendations of the Office of Structural Foundations. If the pile is accepted, the
inspection tubes may be cleaned and grouted, and the pile is complete.
Defective Piles
If the Office of Structural Foundations or the service contractor determines that a pile is
defective and the Structure Representative rejects the pile, the Contractor shall be informed
in writing that the pile is rejected and given a copy of the test results. The contract specifi-
cations also require that the placement of concrete under drilling slurry be suspended until
written modifications to the method of pile construction are submitted to and approved by
the Engineer. This is to prevent additional failures due to the method of pile construction.
What causes piles constructed by the slurry displacement method to be defective. One of
the primary reasons for pile defects is problems caused by settled materials. These are