Expansion Joint In Concrete Block Wall

It exists due to the way that a home s foundation is poured.

Expansion joint in concrete block wall.

Expansion joints are put in place before the concrete is poured. An expansion joint is simply a disconnection between segments of the same materials. In the concrete block construction the expansion joints are expressed as control joints. Joint positions will also be impacted by the type of brick the change in height of external materials the placement of windows and door openings the location of wall ties and the bed joint reinforcement.

These joint are placed where a slab meets a building where a slab meets another slab and where a pool deck meets the coping. Emco block is the best and most trusted masonry block manufacturer serving washington dc maryland and northern virginia. After your foundation footings are built your basement walls are poured so that they slot into a keyway. 6 for more detailed information.

Expansion joints are used to allow the slab to move and not put stress on whatever it abuts. This joint where your basement wall and floor meet is known as a cove joint. See clay and concrete masonry banding details tek 5 2a ref. So if you have 12 metres between joints then the joint should be 16mm 12m 4 30 16mm.

Expansion joints in the past some engineers used various spacing combinations of expansion and contraction joints in an attempt to relieve compressive stresses in the. Another common control joint problem is. Where concrete masonry is used as a backup for veneer or in multi wythe applications consider the following. After the concrete hardens the top of the filler may be recessed about in.

This helps keep them properly aligned. Types of expansion joint. Normally joint reinforcement is used in the common joint between the two to distribute the forces and keep any cracks that form tightly closed. See tek 19 6a joint sealants for concrete masonry walls ref.

20 mm below the surface of the slab to allow space for the joint sealant to be placed later. The depth of sealant should be approximately the joint width to reduce sealant strain and hence extend sealant life. Another option is to provide a horizontal slip plane between the two materials to accommodate the differential movement. Based on the location of joint expansion joints are divided into following types.