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General Description |
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KM String is a chemically modified natural rubber product. A patented
process chemically binds a hydrophilic agent to the rubber. This permits
the KM String to undergo controlled expansion when in the presence of moisture.
This expansion capability provides a "double locking" waterstop. One from
rubber's natural resilience and one from the expansion. Any void, within
the limits of the product's volume expansion coefficient, will be filled
by the expansion of the KM when it is hydrated.
Expansion occurs in all dimensions, diameter and length. Expansion will follow the direction of least resistance. The Volume Expansion Coefficient of 3 times indicates the material will increase 3 times by volume, not 3 times in size. Linear expansion coefficient is approximately 1.45. KM has excellent durability and resistance to chemicals. It can perform in a wide range of solutions such as salt or cement water. It does not contain any toxic substance or heavy metals and is environmentally safe. |
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Basic Use |
| Because KM is available in many diameters, it is suitable for waterstopping existing joints of various sizes. The KM string size is determined by the size of the joint. The KM string selected must have a minimum diameter of 1.2 times the joint width. (See Detail No. 1). The string can be easily stretched and inserted into the joint gap with a backer rod insertion tool or a blunt instrument. |
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KM is an excellent waterstop for sheetpiles.
The string size again should be a minimum of 1.2 times the width of the interlock gap. Stretch the string and force into the interlock area. This can be done even if flowing water is present. The natural resilience of the rubber will stop the water and hold the KM in position until expansion has occurred. See detail 2. |
| KM string can be used in a variety of applications such as sealing the annular space between two pipes as shown in Detail 3. |
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Joining two ends of the string can be done by overlapping approximately
2" and applying a bead of P-201 on the overlap area. Note Detail 3.
Short pieces of KM string can be used to effectively waterproof taper tie holes. The size of the string is dependant upon the size of the taper tie hole. The string should be tamped into place approximately at the center of the wall. The following example shows KM 24mm used in a taper tie hole of 0.75" to 1.0". See Detail 4. |
| KM is a versatile waterstop that is easy to install and will remain flexible even when expanded. It will serve as a long lasting positive waterstop. |
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Packaging Information for Selected Sizes |
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* Other sizes available by special order KM string has good resistance to a number of chemical contaminants. However, some chemicals in higher concentrations may affect the performance of KM. Consult your Adeka Ultra Seal Representative concerning any unusual chemical contaminants or conditions. Technical assistance is available through the manufacturer and representatives of Adeka Ultra Seal. Contact your local representative for additional information or call (800) 999-3959. |
(800) 999-3959 |
information@adeka.com
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