Experimental Study on Carbonization and Strengthening Performance of Recycled Aggregate
Abstract
1. Introduction
2. Materials and Methods
2.1. Raw Materials
2.2. Specimen Forming and Maintenance
2.2.1. Pretreatment of Recycled Aggregate
2.2.2. Regenerated Aggregate Carbonization Treatment
2.2.3. Regenerated Aggregate Concrete Specimen Forming and Curing
2.3. Experimental Scheme
2.3.1. Detection of Temperature, Humidity, and Carbon Dioxide Content During the Carbonization Process
2.3.2. Physical Properties Test of Regenerated Aggregate Before and After Carbonization
3. Results
3.1. Study on Physical Properties of Carbonized Reinforced Recycled Aggregate
3.1.1. RCA Physical Performance
3.1.2. Physical Properties of CRCA
3.1.3. Physical Properties of L-RCA After Carbonization
3.1.4. Physical Properties of W-RCA After Carbonization
3.1.5. Physical Properties of W-L-RCA After Carbonization
3.2. Micromechanical Study of Carbonized Recycled Aggregates
3.2.1. XRD Analysis of Recycled Aggregate Attached Mortar
3.2.2. Infrared Spectral Analysis of Recycled Aggregates
3.2.3. Transition Zone Morphology of Recycled Aggregate Interface
4. Discussion
4.1. Effect of Carbonization Treatment on Physical Properties of RCA
4.2. Enhancement of RCA Carbonization Effect by Calcium Hydroxide Pretreatment
4.3. Effect of Ultrasonic Cavitation Pretreatment on the Carbonization Effect of RCA
4.4. Synergistic Effect of Ultrasonic Cavitation and Calcium Hydroxide Pretreatment
4.5. Microstructure Analysis
5. Future Research Directions
5.1. Study of Optimized Processing Conditions
5.2. Long-Term Performance and Durability Studies
5.3. Integration Studies with Other Technologies
5.4. Environmental Benefits and Economic Cost Analysis
Author Contributions
Funding
Data Availability Statement
Conflicts of Interest
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Chemical Composition | Cao | Al2O3 | TiO2 | Fe2O3 | SiO2 | SO3 | K2O | Na2O |
---|---|---|---|---|---|---|---|---|
content | 57.28 | 6.23 | 1.07 | 6.79 | 21.74 | 3.48 | 0.62 | 0.56 |
Water/Cement Ratio | Age (Days) | Water Absorption (%) | Apparent Density (kg/m3) | Crush Indicator (%) |
---|---|---|---|---|
14 | 5.79% | 2508 | 17.60 | |
0.4 | 28 | 5.66% | 2518 | 18.40 |
90 | 5.59% | 2522 | 18.60 |
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Lin, M.; Li, X.; Wei, M.; Xie, Q. Experimental Study on Carbonization and Strengthening Performance of Recycled Aggregate. Buildings 2025, 15, 2309. https://doi.org/10.3390/buildings15132309
Lin M, Li X, Wei M, Xie Q. Experimental Study on Carbonization and Strengthening Performance of Recycled Aggregate. Buildings. 2025; 15(13):2309. https://doi.org/10.3390/buildings15132309
Chicago/Turabian StyleLin, Mingqiang, Xiang Li, Maozhi Wei, and Qun Xie. 2025. "Experimental Study on Carbonization and Strengthening Performance of Recycled Aggregate" Buildings 15, no. 13: 2309. https://doi.org/10.3390/buildings15132309
APA StyleLin, M., Li, X., Wei, M., & Xie, Q. (2025). Experimental Study on Carbonization and Strengthening Performance of Recycled Aggregate. Buildings, 15(13), 2309. https://doi.org/10.3390/buildings15132309