Construction joints are designed to split areas of the structure into separate concrete sections for work scheduling reasons, or as a structural measure to transfer load, for example. The reinforcement in construction joints is therefore continuous through the joint.
Connection joints are flat or indented joints which split the concrete section through its full thickness without a defined joint gap. The reinforcement in connection joints is discontinuous. When the concrete section contracts, joint movement (joint opening) is possible. When it expands, pressure transmission is possible.