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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
9-12
CALTRANS FOUNDATION MANUAL
Sand content is tested using the test kit shown in Figure 9-6 in conformance with the test
method described in API Recommended Practice 13B-1, Section 5. This test method is
included in Appendix G.
pH Value
The pH value of a drilling slurry is important to ensure its proper functioning. Mineral
slurries which have pH values outside the allowable range will not fully hydrate the clay
mineral and will not develop the expected viscosity. Polymer slurries which are mixed in
water having pH values outside the allowable range may not become viscous at all. It
cannot be assumed that drilling slurries that are mixed in a controlled environment (such
as in a mixing tank) will not be affected by acids and organic material from the groundwa-
ter or the soil. Mineral slurries may deflocculate and fail to form a filter cake if the slurry
becomes too acidic or too alkaline. Polymer slurries may lose their viscosity and their
ability to stabilize the sides of the drilled hole if the slurry becomes too acidic or too alka-
line.
The pH value of a drilling slurry is tested using either a pH meter or pH paper.
Viscosity
Viscosity refers to the "thickness" of the drilling slurry. This property is measured to prevent
the drilling slurry from becoming too thick and suspending more solids than permitted,
which would affect the density and sand content values. On the other hand, a drilling slurry
may require a higher viscosity during drilling to permit the formation of filter cake or to
stabilize the sides of the drilled hole in loose ground formations such as gravels. A thinner
drilling slurry would tend to flow through a loose ground formation without building a
filter cake or providing stability. After the hole is drilled and a filter cake has formed or the
sides of the drilled hole have stabilized, the drilling slurry can be thinned as required prior
to concrete placement.