Formation Type

Average SlurryPro CDP Refreshment Dosage

Typical Marsh Funnel Visc.

	lbs/cu yd	lbs/1000 gals	kg/m3	sec/qt
Clay & Shale	1.012-1.519	5.007-7.511	0.6-0.9	60-75
Silt & Fine to Medium Sand	1.181-1.687	5.842-8.345	0.7-1.0	65-120
Coarse Sand to Pea Gravel	1.266-2.025	6.259-10.014	0.75-1.2	75-150
Gravel to Cobbles	1.266-2.109	6.259-10.432	0.75-1.25	85-150+

Additional CDP may also be introduced at the point of excavation through a KB Eductor or into the mix tank or agitated slurry storage tanks. The addition of small quantities of CDP at the hole provides the following benefits: an abundance of gels to control fluid loss; rapid increase in viscosity to stabilize highly permeable soils; and immediate intervention in case of emergencies or other atypical situations. When adding SlurryPro CDP at the point of excavation, please pour CDP slowly into a KB Eductor feeding into an adequately flowing stream of slurry emptying into the excavation. SlurryPro CDP may also be added directly to the stream of fluid flowing into a pile while the excavation tool is one meter (3 feet) below the surface of the slurry and rotating to form a vortex within the slurry column. Avoid the agglomeration of CDP into “white gel balls” in the slurry by slowly sifting product into the fluid stream. Feeding CDP too quickly with lack of proper agitation causes the agglomeration of polymer particles and wastes material. After completing the addition of CDP to the any excavation raise and lower the excavation tool from the top of the hole to the bottom to assist in proper distribution of the product throughout the slurry column. The slurry viscosity within the excavation should never be allowed to drop below 55 seconds per quart regardless of what type of soil is being excavated.

Recovered slurry is typically treated at a minimum rate of 0.5 to 1.00 kg/m3 of recirculated slurry. This should preferably be done in the mixing tank and not at the point of slurry entrance into the next excavation. At least one sedimentation tank is always recommended for recaptured slurry to pass through prior to the mix tank and the re-addition of SlurryPro CDP.

The dosage rate of the SlurryPro CDP synthetic polymer in the initial make-up water should err on the side of caution and use the higher levels recommended in the dosage chart. Only after the slurry has been established and a secure dosage and viscosity obtained should the dosage be reduced.

When excavating more challenging formations, KB International's System additives should be utilized in combination with a SlurryPro or SlurryShield system to increase slurry stabilization performance. The more challenging the formation type the more requirements for various SlurryPro Specialty Additives.

Unusual site conditions may arise during actual excavation, in which case the recommendations from KB technical personnel must always be followed.

Special Operational Precautions and Instructions:

The specific gravity range for the slurry should be maintained from 1.01 to 1.04 under normal operating conditions. If low hydrostatic conditions are encountered where the water table is less than 3 meters or 10 feet beneath the slurry level, the specific gravity of the slurry should be increased as required using WeightIt or a combination of WeightIt™ and SandSeal™ to raise the slurry S.G. accordingly.

Due to the unique characteristics of a KB Earth Stabilization System as compared to bentonite, several key operational procedures should be modified from bentonite systems. These modifications will have a major impact on the overall effectiveness and successful use of KB International's Earth Stabilization Systems. For smaller projects, please consult KB International's "General Operating, Product Addition, and Testing Procedures." For larger or more complicated projects, please contact KB International for specific project planning.

Packaging:

SlurryPro CDP is available in two packages: 10 kilo / 22 lb. resealable plastic pails

                                                                                 25 kilo / 55 lb. poly bags