Document Type

Report

Publication Date

Winter 2024

Abstract

This study investigates the interplay of climate-induced deterioration factors impacting concrete bridges in Texas, focusing on chloride and carbonation-induced corrosion. It integrates Fick’s second law to model chloride diffusion and employs empirical equations to predict corrosion initiation and severe crack damage. Sensitivity studies across representative Texas cities (Houston, Dallas, and Amarillo) shows varying deterioration risks due to climate change. Results highlight chloride-induced corrosion as more prominent, particularly affecting coastal bridges in Houston, while carbonation corrosion is negligible due to favorable concrete cover. Condition rating mapping simulations incorporating crack width effects, traffic impact, and maintenance interventions are calibrated against recorded National Bridge Inventory (NBI) ratings. Projections over 100 years under diverse emission scenarios reveal deterioration rates influenced by geographical location and emission levels. The findings offer crucial insights for informed decision-making on maintenance strategies, infrastructure investments, and resilience planning, essential for mitigating bridge deterioration amidst evolving climate scenarios.

Comments

Tran-SET Project 22PUTSA62

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