Placement of concrete control joints and expansion joints are crucial when designing and pouring concrete slabs and sidewalks. Thinking of starting your own concrete business? If a timber or other temporary former has been used to create the wet-formed joint, it should be removed and the joint sealed with a suitable sealant, usually a polysulphide such as Thioflex. See All Buying Options. After a period of hardening has been allowed for the second bay, the joint can be sealed with the appropriate sealant. The material should extend the depth of the slab and extend the full width of the slab.
This domain name is not related to or affiliated with Goodwins
Since I can't, I will investigate other products. Repeated traffic can cause the joint arris to spall, which makes it harder for vehicles to cross smoothly and safely, and causes premature vehicle damage. I wanted to replace the wood with something more permanent. The former, which needs to be removed to facilitate subsequent pours, is often a shaped and planed length of timber, nailed to the shutter and painted with Mould Release Agent Soap Oil. What is an expansion joint? I little be more work but it works. Builders' Merchants will advise on the most appropriate sealant for a given project, if none is specified.
So don't try to use this to fill cracks that don't have a visible bottom or corner joints between a slab and wall. Calculate how much of a product you need, then add it to your Shopping List. After concrete hardens, if tear-off strip was placed up, remove strip and seal area with suitable caulking. No joint should be wider than 30mm. Use wherever concrete expansion joints are applicable: slabs, drives, sidewalks, isolation joints and in all standard concrete construction such as highways, runways and parking garages.
For the price of two bags from them I bought a single ' bag here. There are adhesive caulks available that can be applied to seal the cracks to prevent water from getting in and freezing. I had issues with the first gallon of hardener it was hard , I called the company and there customer service took care of it right away. Everything About Concrete. The nature of a joint is that its width will change with movement in the concrete.