Relationship Between Chemical Deterioration and Mechanical Properties of Hardened Cement Paste Exposed to Chloride-Based Deicing Agents

Key Points

• The study aims to clarify the relationship between chemical deterioration and mechanical properties of hardened cement paste exposed to chloride-based agents.
• Test specimens immersed in 2 mol/L CaCl2 and 4 mol/L NaCl solutions at 5°C and 20°C for 3 months.
• Analyzed both chemical and mechanical properties after immersion.
• Examined effects on compressive stress and strain in cement paste.
• At 5°C with CaCl2, significant increase in vertical strain and notable decrease in compressive strength were observed.
• In NaCl solution and at 20°C with CaCl2, no significant changes in mechanical performance were recorded despite some chemical reactions.