Thanks to botched install not one of our crews , we had the pleasure of restoring concrete expansion joints at a local church. On our project, the original installer used a combination of foam backer rod and a concrete expansion joint filler that was too rigid for the application. With only the two joint sides to bond with and not the bottom, the contractor got paid for sub-par work that left unsightly cracks in the filler less than a year later as the building settled. Without going through a repair cycle, the edges would eventually start to expose. That would lead to a slow erosion of the expansion joint sides.
How to Remove and Replace Wood Dividers in Concrete | Home Guides | SF Gate
Expansion joints are installed in a concrete slab where expansion and contraction caused by temperature cycles and moisture are likely to occur. Expansion joints can also alleviate the pressures caused by frost heave, foundation settlement, and the curing process. The function of the joints is to relieve stress concentrations and to control or minimize the size and locations of potential cracks in the slab. Larger slabs, in particular, require expansion joints at regular intervals. Expansion joints provide an added advantage when a slab is too large to finish in one pouring: the individual sections created by the expansion joints can be poured one at a time.
How to Remove and Replace Wood Dividers in Concrete
A great way to view and understand your building or repair project before you get started. Find out just about everything you need to know by watching the video below. Expansion joints are cuts in concrete slabs, or the joints between walls and concrete slabs, that go completely through the slab to the base material.
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