Evaluation of Compressive Strength and Plastic Strain of Cement Asphalt Mortar Under Freeze–thaw Action

Key Points

• The study aims to assess how freeze-thaw cycles affect the compressive strength and plastic strain of cement asphalt mortar.
• Conducted compressive strength tests and fatigue tests on cement asphalt mortar subjected to freeze-thaw action.
• Evaluated the relationship between temperature, freeze-thaw cycles, and compressive strength degradation.
• Analyzed the increase in plastic strain related to the ratio of compressive stress to compressive strength.
• Increased freeze-thaw cycles and lower minimum temperatures significantly decrease compressive strength.
• Higher ratios of compressive stress to compressive strength correlate with greater increases in plastic strain.
• Discussed the mechanisms of deterioration in the cement asphalt mortar based on the results.