������������������������ SECTION 03256

 

������������������ APPLIED STRIP WATERSTOPS

 

This section is based on products manufactured by Greenstreak Plastic Products Co., Inc. located at the following address:

���� 3400 Tree Court Industrial Boulevard

���� St. Louis, MO� 63122

���� Telephone:� (314) 225-9400 or (800) 325-9504.

���� Fax:� (314) 225-9854 or (800) 551-5145.

 

The applied strip waterstops specified are SWELLABLE STRIP and MASTIC STRIP types for non-moving joints and non-chemical resistant applications.� Call GREENSTREAK for alternative waterstop materials for moving and chemical-resistant joints.� Please note that "strip waterstop" as defined by Caltrans Std. Spec. 51-1.145 is a tackified membrane which is placed externally over a joint.� The strip waterstops specified in this section are internal and are not membranes.Although this guide specification is proprietary, it does include reference and performance standards.� The specifier should edit this specification to suit the project's requirements.� Selection of the appropriate product for the project is the responsibility of the customer.

 

Concrete accessories (Waterstops) may be specified in this section or in the Division 3 related sections listed below.

PART 1� GENERAL

 

1.1 SECTION INCLUDES

Delete any items below not required for project.� If both swellable strip and mastic strip waterstops are required, be sure to indicate where each is to be used.

��� A.� Swellable strip waterstop embedded continuously along concrete contraction/control and non-moving construction joints creating a continuous barrier to fluid migration.

 

��� B.� Mastic strip waterstop embedded continuously along concrete contraction/control and non-moving construction joints creating a continuous barrier to fluid migration.

 

1.2 RELATED SECTIONS

Delete any sections below not relevant to this project; add others as required.

��� A.� Section 03100 - Concrete Formwork.

 

��� B.� Section 03300 - Cast-in-Place Concrete.

 

��� C.� Section 03400 - Precast Concrete.

 

��� D.� Section 03500 - Cementitious Decks and Toppings.

 

��� E.� Section 07100 - Waterproofing.

 

��� F.� Section 07900 - Joint Sealants.

 

��� G.� Section 13201 - Post-Tensioned Concrete Water Storage Tanks.

 

1.3 REFERENCES

Delete references from the list below that are not actually required by the text of the edited section.

��� A.� ASTM D 71 - Standard Test Method for Relative Density of Solid Pitch and Asphalt (Displacement Method).

 

��� B.� ASTM D 217 - Standard Test Methods for Cone Penetration of Lubricating Grease.

 

1.4 QUALITY ASSURANCE

Due to a lack of a standard ASTM test for evaluating hydrostatic head pressure resistance of strip type waterstops, GREENSTREAK instructed an independent test lab to utilize a test concept originally developed by the U.S. ARMY Corps of Engineers for polymer waterstops embedded in concrete.� The test report is available from GREENSTREAK.� Competitors test by placing material in a small steel nozzle.� The hydraulic pressure required to force a hole through the material is measured.� GREENSTREAK does not believe the high numbers yielded by that test accurately represent product performance in a concrete joint.

��� A.� Hydrostatic Pressure Test:� Construct and test an actual concrete joint simulating typical field conditions, using the type of waterstops for this project.

 

��� B.� Compatibility of Materials:� Verify compatibility of materials and liquids which contact waterstop.� Provide manufacturer 100 ml of project site water.� Manufacturer to conduct one round of free tests.� Deliver water sample to GREENSTREAK, 3400 Tree Court Industrial Blvd., St. Louis, MO 63122-6689� Attn: Water Sample Technician.

 

��� C.� Source Quality Control:� Provide waterstops manufactured in the United States.

 

1.5 SUBMITTALS

Excessive submittal requirements may impact the project cost.� Only specify minimum submittal requirements to verify compliance with project requirements.

 

��� A.� Submit under provisions of Section 01300.

 

��� B.� Product Data to substantiate compliance with specifications.

 

��� C.� Shop Drawings:� Show construction joint types, layout, and location.

 

��� D.� Material sample representative of waterstop to be used on job, full profile 2 inches long, clearly labeled with manufacturer's name and product identification.

 

��� E.� Certification from manufacturer attesting waterstop meets or exceeds specified physical properties.� This certification to include project name, location, Contractor's name (Control number), manufacturer's lot number, distributor's name and location, and quantity purchased.

 

��� F.� Test reports showing compliance with performance requirements.

 

��� G.� Manufacturer's Job Site Guide including installation instructions.

 

��� H.� MSDS on waterstop strip primer adhesive.

 

1.6 DELIVERY, STORAGE AND HANDLING

 

��� A.� Deliver materials in factory sealed and labeled packaging.

 

��� B.� Store waterstop in factory package to protect from oil, dirt, and prolonged ultraviolet exposure.

 

��� C.� Store materials under cover to protect from moisture which may cause premature waterstop swelling.

 

 

PART 2� PRODUCTS

 

2.1 MANUFACTURER

 

��� A.� Provide products manufactured by Greenstreak Plastic Products Co., Inc., St. Louis, MO, 63122.� Phone: (314) 225‑9400 or (800) 325‑9504.�� Fax: (314) 225‑9854 or (800) 551‑5145.

The design professional is responsible for selecting the appropriate waterstop for the project.� Call GREENSTREAK Technical Sales, at 1-800-325-9504 for additional information.

2.2 WATERSTOP MATERIAL

SWELLSTOP is a flexible coiled strip of swellable clay and butyl rubber compound designed to swell upon contact with water.� The swelling action, when confined in NON-MOVING concrete joints, creates a long lasting compression seal.� Provide a minimum 2 inches of normal weight concrete clear cover with Swellstop to avoid potential concrete spalling.� SWELLSTOP is used for vertical and horizontal reinforced concrete eight inches thick or greater with two rows of reinforcement.� Note that SWELLSTOP is not a self-adhering product.

 

��� A.� Swellable Strip Waterstops:� Greenstreak "SWELLSTOP"; strips composed of bentonite and butyl rubber which swells upon contact with water; one inch by 3/4 inch by 16 ft-8 in per roll.

������� 1.� Properties:

����������� a.� Specific gravity in accordance with ASTM D 71:� 1.2 minimum, 1.35 max.

����������� b.� Penetration in accordance with ASTM D 217 at 25 degrees C (77 degrees F):� 50 minimum, 120 max at 150 GTL; 80 minimum at 300 GTL.

����������� c.� Penetration after 21 day aging in accordance with ASTM D 217:� 75 at 300 GTL at 130 degrees F (54 degrees C).

����������� d.� Unrestricted swell:� Moisture gain of 200 percent, minimum, after 21 days.

����������� e.� Head pressure resistance at 115 feet using a simulated concrete joint:� 50 psi, minimum, ultimate, (345 KPa).

����������� f.� Application temperature range:� 5 to 125 degrees F (-15 to 52 degrees C).

����������� g.� Service temperature range:� -40 to 212 degrees F (-40 to 100 degrees C).

LOCKSTOP is a single component self-sealing mastic waterstop which resists water infiltration through NON-MOVING joints by adhesion to the joint surface.� LOCKSTOP may be located outside the rebar cage near the face of the concrete to protect the rebar from corrosion.�

��� B.� Mastic Strip Waterstops:� Greenstreak "LOCKSTOP"; single component bituminous mastic strip type waterstop; one inch by 3/4 inch by 6 ft-3 inches per roll backed by quick release paper.

������� 1.� Properties:

����������� a.� Head pressure resistance at 92 feet using simulated concrete joint:� 40 psi, minimum, ultimate (276 Kpa).

����������� b.� Application temperature range:� 5 to 125 degrees F (-15 to 52 degrees C).

����������� c.� Service temperature range:� -40 to 212 degrees F (-40 to 100 degrees C).

 

��� C.� Accessories:

������� 1.� Adhesive:� "Swellstop/Lockstop Primer Adhesive"; solvent-based, for securing waterstop to horizontal and vertical substrates.

������� 2.� Concrete cut nails for securing waterstop to vertical joint face.

 

 

PART 3� EXECUTION

 

3.1 EXAMINATION AND PREPARATION

 

��� A.� Ensure steel reinforcing bars do not interfere with proper position of waterstop.

 

��� B.� Protect waterstops during progress of work.

 

��� C.� Clean joints of dirt and construction debris.

 

3.2 APPLICATION OF PRIMER ADHESIVE

 

��� A.� Remove loose particles and dirt and apply primer adhesive to 24-hour cured and dry concrete surface.

 

��� B.� Brush apply one coat of primer adhesive two inches wide continuously along joint.

 

��� C.� Allow primer adhesive to dry for two hours prior to application of waterstop.

 

��� D.� Apply waterstop same day as primer adhesive application.

 

3.3 INSTALLATION

 

��� A.� Position waterstop on joint as indicated on Drawings.

 

��� B.� Press strip waterstop firmly and continuously in place over primed area on first concrete pour.

 

��� C.� Mastic Strip:� Achieve 25 percent spread of waterstop material.� Overlap ends one inch.� With molding action, press ends together to ensure no separation and no air pockets.

 

��� D.� Swellable Strip:� Butt ends of strip coil.� Press ends together to ensure no separation and no air pockets.� Place in maximum practical lengths to minimize splicing.� Cut coil ends square with sharp blade to fit splices together without overlaps.

 

��� E.� When necessary on vertical, damp, or green concrete , fasten waterstop strip mechanically starting 1 inch from each coil end and proceeding 10 inches on center along length.

 

��� F.� Notify Engineer/Architect 24 hours prior to placement of concrete at waterstops.

 

��� G.� Immediately prior to placing second pour, inspect waterstop for premature swell, discontinuity, and debris contamination.� Replace swelled and damaged waterstop.� Remove unacceptable waterstop from site and dispose of defective material in accordance with local regulations.

 

��� H.� Remove the separation paper from the strip waterstop immediately prior to second pour.

 

��� I.� Place concrete without displacing waterstop from position.

 

��� J.� Thoroughly and systematically vibrate concrete around waterstop to obtain impervious, void-free concrete in vicinity of joint and to maximize intimate contact between concrete and waterstop.� Do not allow vibrator to contact the strip waterstop.

 

 

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