Foundation Specifications 0161

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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

Slurry Displacement Piles

allowed for mineral slurries. The density and sand content values should be tested and the

values maintained within the limits stated in the contract specifications to allow for quick

settlement of suspended materials. The polymer slurry’s pH value should be tested and

maintained within the limits stated in the contract specifications to prevent destabilization

of the slurry. The allowable limits described in the contract specifications for density, sand

content, and pH vary between Super Mud and SlurryPro CDP™ due to the extensive

research that had been done by the manufacturers during the Caltrans approval process.

The polymer slurry’s viscosity value has a higher level of importance than that of mineral

slurry. The polymer slurry’s viscosity value should be tested and maintained within the

limits stated in the contract specifications to prevent destabilization of the sides of the

drilled hole. However, polymer slurries at high viscosities may be capable of suspending

sand particles for longer than expected periods, causing the density and sand content values

to increase above their allowable limits. For this reason, caution must be practiced when

using polymer slurries at high viscosities so that particulate settlement on the head of

concrete during concrete placement can be prevented. The allowable limits described in the

contract specifications for viscosity vary dramatically between Super Mud and SlurryPro

CDP™. This is due to the extensive research that had been done by the manufacturers

during the Caltrans approval process. In general, polymer slurries with very high viscosity

values (> 70) are not approved for use during concrete placement because not enough

research has been done to determine the effect of polymer slurries with such high viscosities

on the perimeter load transfer capabilities between the pile concrete and the ground

In general, polymer slurries will break down when they come in contact with concrete. This

is advantageous as long as the polymer slurry is clean and the rising head of concrete is the

only concrete in contact with the polymer slurry. However, if concrete is allowed to inter-

mingle with the polymer slurry, the polymer slurry may break down and cause the sides of

the drilled hole to destabilize.

The contract specifications also require the presence of a manufacturer’s representative to

provide technical assistance and advice on the use of their product before the polymer slurry

is introduced into the drilled hole. The manufacturer’s representative must be approved by

the Engineer. Assistance on approval of a manufacturer’s representative may be obtained

from the Office of Structure Construction in Sacramento. The manufacturer’s representative

can provide assistance with polymer slurry property testing, can test the water to be used for

contaminants that may adversely affect the properties of the polymer slurry and the stability

of the drilled hole, and can give advice in the proper disposal of the polymer slurry. The

manufacturer’s representative may also recommend the use of chemical additives to adjust