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Durability and microstructure of polymer-based cement joint sealant
Tao Chen1, Zhihang Wang2, Pengfei Qin1
1Huanghe S&T University, Zhengzhou, 450063, China.
Scientific Reports
|February 19, 2025
Summary
Polymer-based cement joint sealant (PCJS) demonstrates excellent durability, maintaining over 80% of its properties after various environmental exposures. This makes PCJS a superior material for cement concrete pavement joint engineering.
Area of Science:
- Materials Science
- Civil Engineering
- Polymer Science
Background:
- Polymer-based cement joint sealant (PCJS) is crucial for infrastructure durability.
- Assessing the long-term performance of PCJS under diverse environmental stresses is vital for its widespread engineering application.
Purpose of the Study:
- To evaluate the durability of PCJS by examining its bonding, tensile, and shear properties under various service conditions.
- To determine the suitability of PCJS for cement concrete pavement joint engineering.
Main Methods:
- Testing the bonding, tensile, and shear properties of PCJS.
- Exposing PCJS samples to different service conditions including water soaking, dry-wet cycles, acid/alkali corrosion, UV aging, low temperature, gasoline corrosion, and high temperature.
Main Results:
- PCJS exhibits excellent resistance to water, acid/alkali corrosion, UV aging, and low temperatures, with bonding property retention rates up to 85%.
- Tensile and shear properties retain over 80% after water soaking, dry-wet cycles, and acid/alkali corrosion.
- UV aging and low temperature treatments even enhance tensile and shear properties, while gasoline corrosion and high temperatures retain over 60%.
Conclusions:
- The durability indexes of PCJS meet and exceed technical requirements, demonstrating superior performance.
- PCJS is a highly durable and suitable material for joint engineering in cement concrete pavements.
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