Study on the Resistance of Concrete to High-Concentration Sulfate Attack: A Case Study in Jinyan Bridge
Open Access
Abstract
Concrete structures face significant challenges in sulfate-rich environments, where sulfate attack can affect their durability and structural integrity. This study explores innovative approaches to enhancing concrete performance by integrating hydrophobic and densification technologies. It emphasizes the critical role of anti-sulfate erosion inhibitors in mitigating sulfate-induced damage, reducing water absorption, and inhibiting corrosive reactions. This research addresses prevalent issues in Chinese engineering projects where high sulfate concentrations are common, necessitating robust solutions for sulfate resistance. Through rigorous testing, including wet–dry cycling tests with 5% and 10% Na2SO4 solutions following the GB/T 50082-2009 standard, concrete formulations achieved exceptional long-term sulfate resistance, meeting or exceeding KS200-grade requirements. These findings provide valuable insights into optimizing concrete durability in sulfate-rich environments, offering practical strategies to enhance infrastructure resilience and reduce maintenance costs.Keywords
Funding Information
- National Natural Science Foundation of China (No. 52008340, 2023-1-128, Z231001)
- Jinhua Key Science and Technology Plan Project (No. 52008340, 2023-1-128, Z231001)
- Xihua University Project (No. 52008340, 2023-1-128, Z231001)
This publication has 29 references indexed in Scilit:
- Microstructural and Durability Assessment of Various Concrete Types Under Different Chemical EnvironmentsIranian Journal of Science and Technology, Transactions of Civil Engineering, 2024
- Durability of concrete coupled with life cycle assessment: Review and perspectiveCement and Concrete Composites, 2023
- Understanding the degradation mechanisms of cement-based systems in combined chloride-sulfate attackCement and Concrete Research, 2022
- Alkali-activated protective coatings for reinforced concrete exposed to chloridesConstruction and Building Materials, 2021
- A review on the deterioration and approaches to enhance the durability of concrete in the marine environmentCement and Concrete Composites, 2020
- Damage mechanism and interfacial transition zone characteristics of concrete under sulfate erosion and Dry-Wet cyclesConstruction and Building Materials, 2020
- Mechanical and durability properties of sustainable self-compacting concrete with recycled concrete aggregate and fly ash, slag and silica fumeConstruction and Building Materials, 2020
- Durability of concrete containing fly ash and silica fume against combined freezing-thawing and sulfate attackConstruction and Building Materials, 2017
- Sulfate attack resistance of air-entrained silica fume concrete under dry-wet cycle conditionJournal of Wuhan University of Technology-Mater. Sci. Ed., 2016
- Guidelines in compressive strength assessment of concrete modified with silica fume due to magnesium sulfate attackConstruction and Building Materials, 2012