Un bonded concrete screeds should be a minimum thickness of 75mm.
Polished concrete floor expansion joints.
Epoxy or polurea fillers are used to protect the exposed joint edges from impact and spalling by allowing load transfer across the joint.
When used in conjunction with polished concrete joint filler is ground and polished smooth to provide a seamless floor that is not only protected but easier to clean.
For uniformity all rooms should be poured together and partition walls installed after the concrete is polished.
Joint spacing that is greater than 15 feet require the use of load transfer devices dowels or diamond plates.
Note that flexible expansion joint filler does not protect the edge of the slab from damage.
These are the joints that we come across most often in warehouses and industrial buildings.
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While in theory you can cut an expansion joint in concrete at any time it s better if this is a planned task.
Concrete expansion joints are used to separate slabs and concrete from other parts of the structure.
Polished concrete floors in melbourne for homes factories commercial properties.
For tips on this check out bob harris s video or get a copy of his guide to stamped concrete joints are covered in chapter 23.
Joints are commonly spaced at distances equal to 24 to 30 times the slab thickness.
Joint spacing in meters.
Early entry saws make a nice clean cut for decorative concrete joints.
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As the name implies the expansion joint is a straight line groove cut into the surface of the concrete floor using a concrete saw.
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Expansion joints on the other hand are true structural joints separating different sections of the building typically used to accommodate thermal and moisture expansion in concrete.
Concrete is rigid in structure much like glass it does not bend or stretch without cracking.
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Control and expansion joints should be filled on exposed concrete surfaces.
Filling in expansion joints in polished and stained concrete floors provides an easier to clean surface and a smooth and finished joint where debris or dirt could gather.
An expansion joint is a joint left completely free of mortar and filled with elastomeric sealant to keep it watertight.
Concrete s high compressive strength and hardness make the concrete useful for flooring applications in many industries.
Spec sheet on pouring concrete suitable for polishing concrete must be laid extremely well and flat.
This type of concrete joint filler can be used in new construction in control joints or in existing concrete floors where traffic is high and concrete joints need protection.
Joint spacing in feet contraction joints may be tooled into the concrete surface at the time of placement.
