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Why Compacting GFRC Matters

Compaction of each thin layer of backer is a critically important step in the fabrication of GFRC. Compaction serves four important functions that are essential to achieving the high flexural strength GFRC is known for.

  • Fibers are oriented in the plane that the tensile loads develop in.
  • Fibers are compacted into a thinner, more dense layer.
  • Trapped air voids are eliminated.
  • Interlayer bonding is enhanced.

Compaction is achieved during casting by rolling each layer of the freshly applied backer using a compaction roller.

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