The maximum thickness of expansion joint in rigid pavements is

Explanation:

• The maximum thickness of expansion joints in rigid pavements is typically limited to 25 mm as per common design standards (like IRC guidelines).

• This thickness provides enough room for concrete expansion due to temperature changes while maintaining structural integrity.

• Expansion joints help prevent cracks and damage by allowing controlled movement between concrete slabs.

• Keeping the joint thickness within this limit ensures durability and reduces maintenance needs.

Additional Information

• Expansion joints are gaps placed between concrete slabs in rigid pavements to accommodate expansion and contraction caused by temperature changes.

• They prevent the development of stresses that can cause cracking or damage to the pavement structure.

• The joints are usually filled with compressible materials like bitumen, rubber, or foam to allow movement while preventing debris entry.

• Proper sizing and spacing of expansion joints are critical to maintain pavement durability and performance.

• Typically, the maximum thickness of these joints is kept around 25 mm to balance flexibility and stability.