New method for breaking
concrete pile heads
Problem
Concrete pile heads are difficult to remove. Existing methods put operatives at risk because of dust creation, Hand-Arm-Vibration (HAVS) and interface with machinery. In addition to these risks, the operation is slow and costly.
Solution
The Novaslice method for removing concrete pile heads uses sacrificial hollow devices, made from recycled plastic. These devices create a weak point in the concrete at the cut off level, facilitating the removal of the pile head.
The lifting method of the pile head can be done in a variety of ways at the client's discretion.
Benefits
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Reduces dust and manual handling;
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Reduces costs;
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Quicker construction;
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Minimised interface between workers and machinery;
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Novaslice devices installed at the same level provide consistent cut-off-levels for all piles across site;
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Generate project savings.
Layout of the Novaslice device when inserted on the pile reinforcement cage below the debonding foam.
hole for vertical rebar
Visible area to be pierced once in concrete
Novaslice is a hollow plastic device installed on the reinforcement bar at cut-off level which creates a weak point in the concrete.
Secure “Slice” to vertical rebar using a cable tie
Set the rebar cage into the concrete filled hole
It is expected that de-bonding sleeves is placed on every bar as usual. The Novaslice device is shown without de-bonding sleeves to provide increased clarity.
The concrete pile head can then be removed to reveal a level cut with protuding rebars
The concrete pile head can then be removed to reveal a level cut with protuding rebars
Using a wedge and hammer, pierce the outer visible edge of the “Slice”