SikaShot® NS

12 months from date of production if stored properly in original, unopened and undamaged sealed packaging.

Store dry at 40–95 °F (4–35 °C)

Protect from moisture. If damp, discard material.

Condition material to 65–75 °F (18–24 °C) before using.

Minimun 1/4" (6.4 mm)

> 45 °F (7 °C)

> 45 °F (7 °C)

Coverage figures do not include allowance for surface profile and porosity or material waste.

Yield in service will vary according to amount of water utilized in the shotcreting process.

Estimating should be based on prior experience or actual field evaluation.

• Set up dry-process shotcrete equipment.
• Add SikaShot® NS powder directly into gun.
• Water is to be added at nozzle.

• At time of application, surfaces should be Saturated Surface Dry (SSD) with no glistening water.
• Apply SikaShot® NS mortar by dry spray process or trowelling for repairing vertical or overhead surfaces.
• Apply SikaShot® NS in accordance with ACI 506-R85, “Guide to Shotcrete”. Important factors to observe during shotcreting are nozzle distance (2-6 ft.), angle to substrate (90°), and consistency of mortar.
• This minimizes rebound, creates the smoothest pattern (reduces ‘bumps’) and properly encases the rebars. The velocity of the material is sufficient if, at a distance of 18 to 24" (4.5-6 m), the material pattern flattens out on contact with the surface and the rebars are encased.
• Immediately after application and before set, mortar consistency should be plastic, like a firm jelly.
• After applying the shotcrete, allow it to stiffen for about 10 minutes before removing bumpy areas with a trowel.
• Before applying the next layer, allow the material to reach initial set. This will take anywhere from 2-4 hours, depending on mix consistency, mix and ambient temperature, wind conditions and humidity.
• Begin and finish a given patch on the same day.
• A natural gun finish may be used. If a gun-finish is too rough, special finishes may be applied. Approximately 5-10 min. after initial set, excess material should be sliced off with a sharp-edged cutting screed. The surface may then be finished to your requirements: broomed for a rough texture, wood-floated for a granular texture, steel-trowelled for a smooth finish.

• As per ACI recommendations for Portland cement concrete, curing is required.
• Moist cure with wet burlap and polyethylene, a fine mist of water or a water based* compatible curing compound meeting ASTM C-309.
• Curing compounds adversely affect the adhesion of following lifts of mortar, leveling mortar or protective coatings.
• Moist curing should commence immediately after finishing.
• Protect freshly applied mortar from direct sunlight, wind, rain and frost.
• To prevent from freezing, cover with insulating material.

* Pretesting of curing compound is recommended.