PVC crack inducers are used in concrete slabs to induce controlled cracks at specific locations in continuously poured (jointless) concrete slabs. To work effectively it is recommended that the total depth of the top or top and bottom crack inducers should be between 1/4 and 1/3 of the total slab thickness.
TOP TYPE: A two piece PVC crack inducer designed to be pushed into the top of a wet concrete slab to form a controlled crack. The top section can be removed to form a void approximately 25mm deep into which a floor seal can be applied.
BOTTOM TYPE: Where slabs exceed 250mm in depth a bottom crack inducer used in conjunction with and placed immediately below the top crack inducer is recommended.
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