ISR VO

Performance Characteristics

• Contains significant concentrations of both pre-and post-consumer recycled content.

• Maintains integrity of repair, resists cracking.

• Prevents delamination due to temperature change.

• Protects reinforcing steel in repair zone and suppresses ring anode effect.

• Resistant to weathering action, excellent freeze/thaw stability and abrasion resistance.

• Resistant to deicing salts, carbonation, chloride, and chemical attack.

• Suitable for large areas.

• Hard, durable surface for long term wear.

Surface Preparation

• Remove loose and deteriorated material, laitance, dirt, dust, oil and any surface contaminants that will inhibit proper bond.
• Saw cut edges with a diamond blade at a 90° angle to eliminate feather edging. Avoid polishing the edges as this will inhibit bond.
• Avoid bruising or micro cracking during surface preparation. Refer to ICRI Surface Preparation Guide 03732.
• Repair zone must be a minimum of 1/2 inch deep, of simple geometry, with no complex edge conditions.
• Avoid long narrow repairs; these have a tendency to crack.
• Saturate substrate with clean water, (saturated surface dry/SSD), with no standing water during Application.
• Remove concrete from corroded steel and several inches beyond to expose non-corroded steel.
• Provide a 3/4-inch clearance between the concrete and steel.
• Damaged reinforcing steel should be inspected by a qualified engineer and appropriate action taken.

Priming

• Prime the prepared substrate including all edges with a bond coat of ISR VO. Work the bond coat into the substrate to ensure intimate contact and establish bond. ISR VO must be applied while bond coat is wet. If the bond coat dries, remove and reapply.

• Remove all scaling rust from embedded metal and steel. Apply ECB anti-corrosion coating.

Mixing

• Must be mechanically mixed using a low speed drill (400-600 rpm) and mixing paddle or mortar mixer.
• Pour 1 gallon of potable water into a clean mixing vessel and slowly add all of the powder.
• Mix continuously for 3 minutes to a uniform, lump-free consistency.
• Add up to 1 cup of additional water, if needed. Proper mix ratio is 4 parts powder to 1 part water.
• Allow to “breathe” for 1 minute and remix for 1 minute. This will improve workability and extend open time
• Do not overmix, this will entrain excess air.

Application

• At the time of application, surfaces should be saturated surface dry (SSD) but hold no standing water.
• Place material continuously to break points.
• Force the material against the edges of the repair, working toward the center.
• Material may be applied in multiple lifts of not less than 1/2 inch and no greater than 2 inches.
• Consolidate each lift and allow to stiffen to thumb-print hard before continuing.
• Scratch (screed/open pores) each lift to prepare surface for subsequent lift.
• Finish with a float or trowel.
• Avoid overworking material during placement and finishing – this will produce surface (map) cracking.

Curing

• Dampen the repair with a fine mist of water for 24 hours or moist cure with wet burlap and polyethylene.
• Protect repair from direct sunlight, wind, rain and frost during curing period.

Clean Up

• Clean tools and equipment with water immediately after use.
• Cured material must be removed mechanically.

Theoretical Yield

Product Handling

• 50 lb. bags

• 12 months when properly stored.

• Transport and store in cool, clean, dry conditions in unopened containers.
• High temperature or high humidity will reduce shelf life.

Limitations

• Do not apply unless substrate and ambient temperature can be maintained at a minimum of 40°F for 24 hours. Refer to ACI Cold Weather Application Guidelines.
• Cold mixing water and low temperature will retard set. Hot water and high temperature will accelerate set.
• Protect application from precipitation and high wind for at least 8 hours.
• Do not add more water than specified, this will lower strengths and cause shrinkage cracking.
• Avoid overworking material during placement and finishing – this will produce surface (map) cracking.

Health and Safety

• Product is alkaline.
• Do not ingest.
• Avoid breathing dust.
• Avoid contact with skin and eyes.
• Refer to Safety Data Sheet (SDS) for additional information.

First Aid

• In case of skin contact, wash thoroughly with soap and water.
• For eye contact, flush immediately with a high volume of water for at least 15 minutes and contact a medical professional.
• For respiratory problems, remove person to fresh air.

Disposal

• Dispose of material in accordance with local, state or federal regulations.