DESCRIPTION: ULTRA-PATCH LI is a fast setting, polymer modified, cementitious patching mortar designed to repair vertical and overhead concrete and masonry surfaces. ULTRA-PATCH LI has a working time of 8 to 13 minutes when mixed with water at 70ºF (21ºC).

USES AND APPLICATIONS:

• Restoring disintegrated concrete or masonry surfaces
• All vertical or overhead surfaces
• Spalling repairs at reinforcing bars
• Repairing damaged concrete pile, curbs, steps or other per-cast concrete material

• Fast-setting and high early strengths
• Superior bond and adhesion properties
• Excellent freeze/thaw resistance
• Compatible with the coefficient of thermal expansion of concrete
• Contains no gypsum or chloride compounds

PACKAGING: ULTRA-PATCH LI is packaged in 50 lb./23 kg multi-ply bags or a 60 lb./27 kg pail.

YIELD: ULTRA-PATCH LI will yield approximately 0.4 cu.ft./0.01 cu.m. per 50 lb. bag.

STORAGE CONDITIONS: Store ULTRA-PATCH LI at or above 45ºF (7ºC) in a dry area. Avoid excessive heat or humidity. Shelf life is one year in the original, unopened container.

POT LIFE: ULTRA-PATCH LI has a pot life of 8 to 13 minutes at 70ºF (21ºC). Cold water 40ºF (4ºC) will retard the set time and hot water 90ºF (32ºC) will accelerate the set time.

COLOR: Concrete gray when cured.

PRIMING: No priming is required with ULTRA-PATCH LI.

SURFACE PREPARATION: All surfaces must be clean and sound before placing ULTRA-PATCH LI. Remove all spalling or unsound concrete from the patch area by use of chisel or air hammer. Any bond inhibitors such as oil or grease should be removed in an alike manor or by chemical cleaners. It is recommended to saw cut all edges to accommodate repairs. If the reinforcing steel is exposed, follow the ICRA technical guidelines #03730 - 03734. If the reinforcing steel is beyond repair, follow the ACI standards for the removal and installation of damaged reinforcing steel. Dampen the area to be patched with clean water. The substrate should be saturated surface dry (SSD). Place material and finish to match surrounding surfaces.

MIXING: ULTRA-PATCH LI maybe mixed by manual or mechanical means. Manual mixing; use various size buckets and a margin trowel. Mechanical mixing; mix in a 5 gallon pail using a heavy-duty, slow speed drill (400-600 rpm) with a mixing paddle. Poor water into the mixing container and then add the ULTRA-PATCH LI. Mix until a uniform, no slump consistency is obtained. Do not over mix! 2 minutes is all that is required. Only mix that which can be placed in 8 to 13 minutes.

NOTE: BVS POLY-BINDER may be used as the mixing liquid if enhanced properties are required.

APPLICATION: The surface should be damp (SSD) and the ULTRA-PATCH LI should be placed immediately after mixing. The ULTRA-PATCH LI should be forced into the area to be patched to insure a good mechanical bond. Next, continue to fill the patch area to above the level of the existing concrete. The mortar should be allowed to stiffen slightly and then shaved to flush with the surrounding substrate. Finish work maybe done with a steel, wood or sponge float.

NOTE: The maximum depth of a lift of ULTRA-PATCH LI must not exceed 1 in./2.5 cm. When repair work exceeds 1 in./2.5 cm. the work should be done 1 inch at a time. After placing the first lift, score the surface to provide sufficient mechanical grab for the next lift. Allow sufficient time for the previously placed lift to set (20 minutes) and then continue with additional lift. Repeat repair procedure until work is flush with the substrate.

CURING: ULTRA-PATCH LI will reach its final set in 10-15 minutes at 70ºF (21ºC). Under normal conditions, no special curing is required. However, under high temperature, low humidity or strong wind, the patch must be protected from rapid drying. The use of a liquid curing compound, wet burlap or polyethylene sheeting is recommended.

• Apply only to a clean, sound properly prepared substrate
• Minimum ambient and surface temperatures should be 45ºF/7ºC at the time of application and not drop below that level for a minimum of 4 hours
• Use clean water when mixing ULTRA-PATCH LI
• Do not apply to a frozen surface
• Do not use admixtures or retemper
• Do not mix more material than can be placed in 13 minutes

• The use of A NIOSH/MSHA approved respirator, safety goggles and impervious gloves is recommended
• Dispose of all waste materials in accordance with Federal, State and local regulations
• Caution – contains Portland Cement which is highly caustic
• In case of contact, wash with soap and water and flush area for 15 minutes. Contact Physician
• Use only with adequate ventilation
• For industrial use only
• Keep out of the reach of children

* BVS POLY-BINDER was used as the mixing agent to compile all data on this product. Water mix results are approximately one third less than posted.