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Expansion Joints Wherever expansion might cause a concrete slab to buckle because of temperature change, expansion joints (also called isolation joints) are required. An expansion joint is used with a pre-molded cork or mastic filler to separate sections from each other, thus allowing room for expansion if elongation or closing of the joint is anticipated. Figures 7-23, 7-24, and 7-25 show
Figure 7-23.-Expansion joint for a wall.
Figure 7-24.-Expansion joint for a bridge.
Figure 7-25.-Expansion joint for a floor slab. expansion joints for a variety of locations. Expansion joints may be installed every 20 ft. |
 
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