Gun Shot LPS

Performance Characteristics

• Low shrinkage Maintains integrity of repair, resists cracking.
• Thermal compatibility Prevents delamination due to temperature change.
• Corrosion protection Protects reinforcing steel in repair zone and suppresses ring anode effect.
• Durable Resistant to weathering action, excellent freeze/thaw stability and abrasion resistance.
• Very low permeability Resistant to deicing salts, carbo- nation, chloride, and chemical attack.
• High build Place up to 2 inch lifts without rebound.
• Economical Improves productivity.
• Consistent results Excellent consolidation around reinforcing steel.
• High early strength Minimize out-of-service time.

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 1/4 inch deep, of simple geometry, with no complex edge conditions.
• Avoid long narrow repairs; these have a tendency to crack.
• Apply Conpro Start where a consolidant is of benefit.
• Saturate substrate with clean water, (saturated surface dry/SSD), with no standing water during Priming or 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

• Apply Conpro Primer, or ECB as a bonding primer to all exposed surfaces. Refer to the individual product technical data bulletin for information.

• Remove all scaling rust from reinforcing steel.
• Apply ECB anti-corrosion coating.

Mixing

• Mechanically mix using a low speed drill (400-600 rpm) and mixing paddle or mortar mixer.
• Pour 2-1/4 quarts 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 pint of additional water, if needed.
• Allow to “breathe” for 1 minute and remix for 1 minute. This will improve workability and open time.
• Do not overmix, as this will entrain excess air.
• Do not re-temper.

Application

• At the time of application, surfaces should be saturated surface dry (SSD) but hold no standing water.
• Follow instructions for Priming.

• Material should be applied by an experienced nozzle man using a rotor/stator or peristaltic pump.
• Follow ACI 506R,for recommendations for wet process shotcrete.
• Material may be applied in multiple lifts of not less than 3/8 inch and no greater than 2 inches.
• Allow material to stiffen to thumb-print hard before continuing.
• Scratch (cross-hatch) each lift to prepare surface for subsequent lift.
• Strike off with straight edge to a uniform plane, close with a trowel or sponge float.

• Force the material against the edges of the repair, working toward the center.
• Material may be applied in multiple lifts of not less than 3/8 inch and no greater than 2 inches.
• Consolidate each lift and allow to stiffen to thumb-print hard before continuing.
• Scratch (cross-hatch) each lift to prepare surface for subsequent lift.
• Finish with a sponge float or trowel.
• Do not overwork the finish.

Curing

• Dampen the repair with a fine mist of water for 24 hours or moist cure with wet burlap and polyethylene. Alternatively, apply ProMasonry Cure & Seal.
• 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.

Coverage/Yield

• 0.41 ft³/50 lbs.

Product Handling

• Packaging 50 lb paper bags.
• Shelf Life 12 months when properly stored.
• Storage 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.
• In case of 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 and federal regulations.