Glossary: J
Joint (control, expansion, or isolation) – Formed, sawed, or tooled groove in a concrete slab used to regulate the location of cracking (control joint) or to allow expansion or movement of adjoining structures. In decorative concrete, joints can also double as delineating design elements in a pattern.
Joint Filler – A compressible material used to fill a joint to prevent the infiltration of debris.
Tags: concrete joints, concrete slab, debris, design elements, glossary, infiltration, isolation, joint filler, tooled groove