Cast-in-place Concrete Facing

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Cast-in-place Concrete FacingEXPLANATION

  • Concept

    The cast-in-place concrete facing is connected with the wrap-around reinforced structure behind by steel bars; the overall structure hence possesses advantages of both rigid and flexible structures.

  • Application

    High safety demanded retaining structure (e.g., embankment for high speed railway).

  • Characteristics

    1. Stable structure with less concrete.
    2. Good resistance to lateral deformation and erosion.
    3. The combination of traditional and wrap-around reinforced method is able to achieve the same safety requirement with less budget.
    4. Making use of in-situ soil to reduce both construction cost and environmental impact.
    5. Vertical wall design occupies less land space.

Cast-in-place Concrete FacingCONSTRUCTION PROCESS

  • Foundation Levelling

    Clean the ground surface of the site, and excavate in accordance with the levelling layout. Then compact the ground to the required compactness.

  • Foundation Casting

    Set up formwork and cast the RC foundation specified on the design drawing.

  • ACEGrid® Laying

    Cut ACEGrid® to the size specified on the design drawing (including at least 2 meters in length for wrap-around purpose). ACEGrid® should be laid flat without any corrugation. Anchorage should be done with the anchorage interval specified on the design drawing.

  • Soil Bag Stacking

    Fill soil bag and cross stack on the facing side to the designed height mentioned in the design drawing.

  • Backfilling

    Backfill soil at the back of the sand bag facing; the thickness of every layer should be between 15 cm to 30 cm. Then, perform compaction from the facing inward to the backfill area to meet the required compactness specified on the design drawing.

  • ACEGrid® Wrap-around

    Wrap the sand bag around with the reserved length of ACEGrid®; make sure it is free of corrugation. Anchorage should be done with the anchorage interval specified on the design drawing.

  • Slope Shaping

    Use excavator grab to compact and shape the slope to the requirement specified on the design drawing.

  • Layer-by-Layer

    Repeat step 3 to 7 to achieve the required height specified in the design drawing.

  • Wall Casting

    Set up formwork and cast the RC wall specified on the design drawing.

  • Cast-in-place Concrete Facing Completed

    .

  • Foundation Levelling
  • Foundation Casting
  • ACEGrid® Laying
  • Soil Bag Stacking
  • Backfilling
  • ACEGrid® Wrap-around
  • Slope Shaping
  • Layer-by-Layer
  • Wall Casting
  • Cast-in-place Concrete Facing Completed
flow-chart video

Cast-in-place Concrete FacingDemonstrative Case

Route 46 road widening project, Nantou County, Taiwan

Due to the traffic jam, the government decided to widening Route 46. In order to reduce both the construction cost and environmental impact, the combination of traditional and wrap-around reinforced method was chosen. ACEGrid® was used to reinforce and stabilize the structure. Soil bags filled with in situ soil were used to reduce the use of concrete. Finally, the cast-in-place concrete facing was built connected to wrap-around reinforced structure. The overall structure hence possesses advantages of both rigid and flexible structures; it would have good resistance to fire, lateral deformation and erosion. Traffic jam now rarely happens in Route 46.

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Tour Booking

We sincerely invite you to visit the ACE Geosynthetics EcoPark. A one-hour tour is offered.
With the tour, you would be able to learn more about the followings:
- The making, characteristics and applications of geosynthetic materials
- The concept and construction process of applications using geosynthetic materials

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