Enhancing the Durability and Crack Resistance of Concrete Bridge Piers Using Nanopolymers: Experimental, Numerical, and Case Study Analysis

Concrete bridge piers are critical components of transportation infrastructure, yet they are highly susceptible to cracking and durability issues due to mechanical loads and environmental stressors. This study investigates the integration of nanopolymers in concrete to mitigate cracking and enhance durability, combining experimental testing, numerical simulations, and real-world case study validation. Concrete specimens modified with varying nanopolymer dosages (۰.۵%, ۱%, ۱.۵%, and ۲% by weight of cement) were subjected to compressive, tensile, and durability tests. Results demonstrated a ۲۵% increase in compressive strength, a ۴۰% improvement in tensile strength, and a ۵۰% reduction in chloride permeability at the optimal nanopolymer dosage of ۱.۵%. Numerical simulations using finite element modeling (FEM) showed a ۳۵% reduction in stress concentration and a ۵۰% decrease in crack propagation under cyclic loading conditions. A case study on a real-world bridge pier validated these findings, revealing a ۲۰% improvement in load-bearing capacity and a ۴۰% reduction in visible cracks. Although initial costs increased by ۱۰%, lifecycle analysis indicated a ۳۰% reduction in maintenance expenses over ۲۰ years. These findings highlight the transformative potential of nanopolymers in extending the lifespan and resilience of bridge piers, offering a sustainable solution for modern infrastructure challenges.

کلیدواژه ها:

Nanopolymers ، Concrete Bridge Piers ، Crack Mitigation ، Durability Enhancement ، Structural Health Monitoring (SHM) ، Numerical Modeling ، Finite Element Analysis (FEM) ، Chloride Resistance ، Lifecycle Cost Analysis