Concrete expands and contracts as it changes temperature A concrete expansion joint is a small gap that provides space for the concrete to expand and contract.. Cracks may form if these changes aren’t managed, leading to a weaker and less attractive concrete.

• Pavements
• Bridges
• Buildings
• Piping systems
• Concrete roads

1. Expansion joints permits thermal contraction and expansion without inducing stresses into the elements.
2. An expansion joint is designed to absorb safely the expansion and contraction of several construction materials, absorb vibrations, and permit soil movements due to earthquakes or ground settlement.
3. The expansion joints are normally located between sections of bridges, paving slabs, railway tracks, and piping systems.
4. The expansion joints are incorporated to endure the stresses.
5. An expansion joint is simply a disconnection between segments of the same materials.
6. In the concrete block construction, the expansion joints are expressed as control joints.