(water swelling)


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Copyright JL Miller 2012 - 866.457.5710


Using Adeka P-201 as a complete waterstop

Just a reminder - Adeka paste type P-201 may be used as a standalone waterstop if construction conditions preclude the use of a strip type waterstop.  A cured bead the same size as Adeka MC-2005T (20mm x 10mm) or MC-2010MN (20mm x 10mm) will function the same as the preformed strip product.  

Determining appropriate bead size is a balance between required hydrostatic head resistance, concrete coverage, potential for joint movement and sometimes cost effectiveness.  A bead size of approximately 1/4" X 1/2" will withstand a hydrostatic head pressure of about 50 feet and will require 3? or more of concrete coverage.  If your estimated hydrostatic head is within that range, any larger bead size would be overkill.   If you measure performance on hydrostatic head resistance, you can adjust bead size to accommodate any head pressure up to 150 feet.  

Required concrete coverage and hydrostatic head resistance will depend on bead size.  Click here P-201 INFORMATION for some detailed information about bead size, hydrostatic head resistance, concrete coverage, durability, application details and much more.

The literature states, “Allow time for P-201 to cure before placing concrete.?  

Curing time depends on bead size, temperature and humidity.  Consider the bead cured when the bead cannot be deformed or displaced when pushing against it with your finger. You must have a minimum “skin cure? before placing concrete. A “skin cure? stage is when you press the bead and and no paste sticks to your finger.

BE AWARE:  Protect the bead of P-201 from prolonged exposure to water prior to placing second concrete.  However short periods of rain (showers) with periods of dry time will not damage the product or change its performance.

When considering durability, ability to withstand wet / dry cycles and ability to tolerate joint opening, the performance of a 1/4" X 1/2" bead of P-201 will exceed that of many bentonite based products.

Applying a bead of P-201 where it would be difficult to attach a strip product

Spreading the bead of P-201 to insure good contact with the concrete

Waterstop H-Pile Another good use for Adeka P-201

CLICK HERE for complete product submittal information

NOTE: The information contained herein is based on our present state of knowledge and is intended to provide general notes on Adeka Waterstops and their uses. Any recommendations or suggestions, which may be made,are without guarantee, since the conditions of use are beyond our control. Furthermore, nothing contained in this publication shall be construed as a recommendation for any use that may infringe patent rights. Readers are cautioned to satisfy themselves as to the suitability of such goods for the purposes intended prior to use