Isolation joints are also known as ______ joints.

Isolation joints, commonly referred to as expansion joints, play a crucial role in construction, particularly in concrete structures. These joints are designed to accommodate movement caused by temperature fluctuations, shrinkage, and other factors that can cause concrete to expand and contract.

Expansion joints allow for the natural movement of the materials without causing damage to the structure itself. They help to prevent cracking and maintain the integrity of the building by providing a space where different sections of the structure can shift independently.

While terms like control joints are often confused with isolation joints, control joints primarily serve to manage cracking by allowing for planned shrinkage in the concrete. In contrast, isolation joints are intended for greater freedom of movement, which aligns with the definition of expansion joints.