Effect and mechanism of composite modification of SAP and PVA fiber on shrinkage characteristics of HPC pavement of steel bridge deck

Key Points

• Reduced shrinkage characteristics enhance the durability of high performance concrete pavements, improving structural integrity.
• A significant 20% reduction in shrinkage was observed with the use of composite modifications involving SAP and PVA fibers.
• Analysis of high performance concrete demonstrated the effectiveness of fiber modifications in limiting shrinkage in steel bridge decks.
• These findings could lead to more efficient and durable designs for bridge pavements, impacting future construction practices.