Title:
Service Life Prediction of HPC and UHPC Structures with Corrosion-Resistant Steels (Pre-Published)
Author(s):
Ben Wang, Abdeldjelil Belarbi, Bora Gencturk, and Mina Dawood
Publication:
Materials Journal
Volume:
Issue:
Appears on pages(s):
Keywords:
corrosion; corrosion resistant steel reinforcement; HPC; service life prediction; UHPC
DOI:
10.14359/51742263
Date:
9/13/2024
Abstract:
This study reviewed, synthesized, and extended the service life prediction models for conventional reinforced concrete (RC) structures to those with advanced concrete materials (i.e., high-performance and ultra-high-performance concrete (HPC and UHPC)), and corrosion-resistant steel reinforcements (i.e., epoxy coated steel, high chromium steel, and stainless-steel reinforcement) subjected to chloride attack. The developed corrosion initiation and propagation models were validated using field and experimental data from the literature. A case study was performed to compare the corrosion initiation and propagation times, and service life of RC structures with different concretes and reinforcements in various environments. It was found that UHPC structures surpassed 100 years of service life in all studied environments. HPC enhanced the service life of conventional normal strength concrete (NC) structures by over three times. In addition, the use of corrosion-resistant reinforcement prolonged the service life of RC structures. The use of high chromium steel or epoxy-coated steel doubled the service life in both NC and HPC. Stainless steel reinforcement yielded service lives exceeding 100 years in all concrete types, except for NC structures in marine tidal zones, which showed an 88-year service life.