Description:
ICS VOPatch is one component Portland cement silica fume based material used to rehabilitate and repair vertical and overhead concrete and masonry surfaces. Its fast set and density allow VOPatch to be placed and sculpted to proper shape in one operation for thickness up to 2 inches.  VOPatch is polymer-modified to produce superior bond, and improved tensile and flexural strength.

Description:
ICS VOPatch is one component Portland cement silica fume based material used to rehabilitate and repair vertical and overhead concrete and masonry surfaces. Its fast set and density allow VOPatch to be placed and sculpted to proper shape in one operation for thickness up to 2 inches.  VOPatch is polymer-modified to produce superior bond, and improved tensile and flexural strength.

Benefits:
• High bond
• Fast controlled set
• Reduced shrinkage
• High strength
• Water resistant
• Thermally compatible with concrete and
        masonry
• Acrylic polymer modified
• One-component
• Silica fume based
• Freeze/thaw resistant

TECHNICAL DATA:
Set Time (Gilmore):
     Initial:                          25 Minutes
     Final:                          30 Minutes
     Wet Density:             121 lb./cu.ft.
Compressive Strength (ASTM C 109
  3 hr       2000     psi
 1day       3000     psi
             7 day      4000     psi
 28 day    5000     psi
Shear Bond (ASTM C 882):
 1 day   1000     psi
 7 day   1500     psi
Flexural Strength (ASTM C348)
 7 day   1000    psi
Expansion/Shrinkage
(ASTM C 157 modified with ASTM C 928):
               Air Cure
            7 day   - 0.037%
          28 day  - 0.041%
Water Immersion Cure:
              7 day   - 0.0015%
             28 day  - 0.0005%

SURFACE PREPARATION:
Concrete substrate shall be structurally sound and clean.  Remove all deteriorated concrete, dirt, grease, oil coatings, efflorescence,  etc. by acceptable mechanical means.  Sawcut and undercut edges whenever possible. When rusted  rebar is exposed in the process of removing old material, prepare it according to ACI recommendations as follows:

Remove sufficient material from behind the rebar to allow access to clean it completely, typically a minimum of one inch.  Remove the rust (cleaning to bare metal) and if desired, apply a corrosion barrier (epoxy, zinc, or cementitious) before installing the VOPatch.

SURFACE CONDITIONING:
Surface shall be saturated, surface dry (SSD).  The best way to achieve this condition is to saturate or soak the surface with water the day before or for two hours immediately before applying VOPatch.  Just before applying VO Patch, spray with clean potable water.  If a moist of water sprayed on the surface runs down immediately, (i.e., no water is absorbed) the surface may be assumed to be in a Saturated, Surface Dry (SSD) condition.

PRIMING:
Preferred Method:  Apply Penetron Bond.  VOPatch may be applied as soon as bonding agent becomes tacky, DO NOT  let bonding agent dry completely.

MIXING: 
Mixing Proportion:  Use between 3.5-4.0 quarts of clean, potable water per 50 lb. bag of VOPatch.  Mechanical mixing is preferred for best results.  Use a slow speed 1/2 inch drill
(500-650 rpm) and a paddle (like that used for joint compound of plaster).  We suggest mixing 1/2 bag or less at one time.  Place all water in a clean mixing container.  Add 3/4 of powder then mix until uniform.  Add remainder of powder and continue to mix.  VOPatch may seem too dry at first, but continue mixing for 1 to 1 1/2 minutes before adding more water.  If mixing by hand is necessary, mix vigorously.  Measure water with reliable volume measure.  Mix until a smooth uniform consistency is obtained.  The VO Patch mix should be putty-like.

Note:  Do not mix longer than 4 minutes.  Do not mix more material than can be placed in 15 minutes.

APPLYING:
Apply “tight” coat of VO Patch to primed surface using trowel, rubber float or gloved hands to force VO Patch into all crevices, cracks, and edges so all air pockets will be eliminated to provide complete contact for a good bond.  Apply material from same batch to build out as much as two (2) inches thick.  Minimum thickness is 1/4”.  For best results apply at thickness between 1/4” and 2”.  All surfaces of VO Patch that will receive subsequent layers of VOPatch should be left rough so as to provide a good mechanical bond.  Two layers of 2” or less may be applied after as little as 30 minutes curing.  For applications greater than 2” thick, place one or two layers totaling not more than 2” thick, leave surface rough then damp cure overnight.   The next day, apply an additional 1 or 2 layers totaling not more than 2” each.

Prior to applying subsequent layers over material that has been in place more than 1 hour, reprime with Penetron Bond diluted 1:1 with water.
If material has begun to set prior to placing, discard it.  DO NOT RETEMPER.  Finish final layer with steel trowel or sponge float.  Can be sculpted for proper profile as VO Patch sets.

CURING:
Under Adverse Conditions:
If you have not weather
and rapid drying conditions including one or more of the following:

1.  When the temperature of the air, the surface being worked on, or the material being used is above 90 degrees F.
2. When air if flowing frequently or continuously at greater than 5 mph.
3.  When relative humidity is low, then:
-Store materials where they will remain
  cool.
      - Use cool water for mixing.
- Add ice to the mixing water if
  necessary.
      - Protect from rapid dry out
Immediately after application, i.e.as soon as the patch feels warm to the touch, looks dry, and feels hard, saturate the surface with clean potable water being careful not to erode the surface with water pressure.  Apply water until it runs down the whole face (for vertical surfaces) or until freshly sprayed surfaces continue to look and feel wet for 2 minutes (for overhead surfaces).
Continue this curing for at least 6 hours.

PACKAGING:
50 lb. Plastic lined bag (22.68kg).

COVERAGE: per 50 lb. (22.68kg.)

Approximately 1/2 cu. ft. of patching material will cover approximately 13 sq.  ft. at 1/2” thick.

SPECIAL INFORMATION:
DO NOT apply when air, surface or material temperature is below 50 degrees F.
Caution:  Contains Portland Cement.  Irritating to eyes and skin.  Product is alkaline upon contact with water.  During mixing and application avoid contact with eyes.  In case of such contact, flood  eyes with water and CALL PHYSICIAN.

Avoid prolong contact with skin.  Use of gloves is recommended.  Wash hand thoroughly after use and before smoking or eating.  Do not take internally.

KEEP OUT OF REACH OF CHILDREN

WARRANTY

ICS/Penetron International, Ltd. products will perform according to specifications only if directions are followed.  ICS/Penetron International, Ltd. is not responsible for improper use, application, or storage of its products or for use of its products in unsafe weather or with unsafe engineering or working conditions.  ICS/Penetron International, Ltd. products are supplied subject to standard terms and conditions of sale or rental, which limit ICS/Penetron International, Ltd’s responsibility for the product.  Any warranty of the product is limited to ICS/Penetron International, Ltd.’s unless
otherwise specifically provided by ICS/Penetron International, Ltd. in writing.