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Flash-Set Shotcrete

For Applications Requiring Rapid Set Times

Flash-Set Shotcrete is a pre-blended, dry shotcrete based on modified hydraulic cement for a very rapid set.  Flash-Set Shotcrete also has greatly enhanced shooting characteristics and physical properties due to specially selected admixtures.

Caution

Flash-Set Shotcrete is not intended for use as a structural support lining. Its unique properties make it ideal as a sealing coat to enable additional shotcrete to be applied.

Uses

  • Flash-Set Shotcrete is designed to be used with the Dry Process. It was specifically developed for the following applications:
  • Sealing a raveling surface.
  • Spraying onto wet areas to contain and direct the water flow.
  • Providing “instant” temporary support in wet or unconsolidated ground.
  • Flash-Set Shotcrete may be used in combination with steel fiber reinforcement to enhance load carrying capacity. It can be blended to meet ACI 506 gradation #1 or #2.

Advantages

  • Instant Set: Flash-Set Shotcrete sets within moments of application to create a sealing membrane and provide limited immediate support.
  • Stickiness. “Flash-Set” Shotcrete has vastly improved cohesion characteristics compared to conventional shotcrete Rebound is significantly reduced, resulting in lower material usage
  • Rebound is significantly reduced, resulting in lower material usage.
  • Sagging and sloughing are eliminated.
  • Physical properties: Silica fume in “Flash-Set”
  • Shotcrete creates a higher strength shotcrete with low permeability and excellent freeze/thaw durability.
  • Resistance to water washout: “Flash-Set” Shotcrete in the plastic state has tremendous resistance to washout by flowing water. This allows it to be applied to moderately wet surfaces.

Physical properties: Silica fume in Flash-Set Shotcrete creates a higher strength shotcrete with low permeability and excellent freeze/thaw durability.

Resistance to water washout: Flash-Set Shotcrete in the plastic state has tremendous resistance to washout by flowing water. This resistance allows Flash-Set Shotcrete to be applied to moderately wet surfaces.

Please refer to TDS and SDS for detailed information.

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