Expansion Joints-Control Joints & Accessories
The following expansion joints are made to accommodate movement in concrete slabs. Fiber and Rubber expansion joints – Rubber expansion fills the joint and protects against weathering. Fiber impregnated with asphalt is a more economical expansion joint which is easier to put into place. Both Rubber and fiber are made in 10’ lengths.
Foam expansion joint- Made in white off white and black, foam expansion joint holds up as well as any expansion material in the business. Flexibility allows for making radiuses. Foam expansion joints are also available with a ½” tear strip to allow the finished concrete joint to be caulked.
Expansion Joint cap – used over top of fiber expansion to create a void. Once cap is removed this void is then filled with joint sealant. Bo Metals for more info.
Zip Strip- Used to create a control crack in concrete. This material is worked into the top of the slab ¼” of the depth of the slab ex: 4” slab, use 1” zip strip. The sole purpose of this material is to give the slab a weak area where it will crack naturally. Bo Metals for more info.
See Expansion Joint cap and zip strip atBio Metals web site.
PVC Waterstops - These Waterstops are made of virgin PVC and are formed into Concrete joints during the actual pour. The PVC Waterstop then bridges the joint between the slabs to prevent water from coming through the joint. Waterstops are typically used in large foundation work, bridges, Dams, and wastewater treatment plants. Waterstops are also available in TPR rubber. More information found at Bio Metals web site.
Dovetail Anchor Slot - Dovetail anchor slot manufactured by Bo metals is used in reinforced concrete to tie the concrete wall into a masonry wall. Dovetail is set in place in the form before pouring; the foam channel is then open at the face of the wall prepared to insert dovetails by the Mason Contractor. More information found at Bio Metals web site.