The Effect of Phase Change Materials on the Physical and Mechanical Properties of Concrete Made with Recycled Aggregate
Abstract
:1. Introduction
2. Experimental Design
2.1. Materials
2.1.1. Materials’ Characterization
Density and Absorption of the Aggregates
Size Distribution of the Aggregates
2.1.2. Functionalization of RA Using a PCM
Volumetric Variation of the PCM
Aggregate Impregnation
2.2. Concrete Mix Design
2.3. Sample Manufacturing
2.4. Test Methods
3. Results and Discussions
3.1. Slump and Total Water Mix
3.2. Density and Water Absorption of Concretes
3.3. Water Absorption by Immersion
3.4. Capillary Water Absorption
3.5. Compressive Strength
3.6. Flexural Strength
4. Conclusions
Author Contributions
Funding
Data Availability Statement
Conflicts of Interest
References
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Characterization | Results |
---|---|
Density solid | 0.76 kg/L |
Density liquid | 0.7 kg/L |
Heat storage capacity | 190 kJ/kg |
Transition temperature | 22 °C |
Characterization | River Sand 0–4 | Gravel 4–10 | RA 4–10 |
---|---|---|---|
Dry density (kg/m3) | 2563 | 2197 | 2134 |
Saturation density (kg/m3) | 2593 | 2208 | 2294 |
Water absorption (%) | 1.19 | 0.51 | 7.82 |
Immersion Time | Absorption Rate (%) |
---|---|
1 h | 7.47 |
4 h | 8.02 |
Mixtures | Cement | Water | River Sand | Gravel | RA | RA-PP | Water Saturation |
---|---|---|---|---|---|---|---|
REF | 400 | 220 | 393 | 1035 | - | - | 10 |
50RA | 400 | 230 | 393 | 552 | 552 | - | 50.6 |
50RA-PCM | 400 | 240 | 393 | 541.6 | - | 541.6 | 7.4 |
Mixtures | Capillary Water Absorption Coefficient (kg/(m2·h0.5)) |
---|---|
REF | 0.116 |
50RA | 0.1274 |
50RA-PCM | 0.0721 |
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Jia, Z.; Cunha, S.; Aguiar, J.; Guo, P. The Effect of Phase Change Materials on the Physical and Mechanical Properties of Concrete Made with Recycled Aggregate. Buildings 2023, 13, 2601. https://doi.org/10.3390/buildings13102601
Jia Z, Cunha S, Aguiar J, Guo P. The Effect of Phase Change Materials on the Physical and Mechanical Properties of Concrete Made with Recycled Aggregate. Buildings. 2023; 13(10):2601. https://doi.org/10.3390/buildings13102601
Chicago/Turabian StyleJia, Zhiyou, Sandra Cunha, José Aguiar, and Pengfei Guo. 2023. "The Effect of Phase Change Materials on the Physical and Mechanical Properties of Concrete Made with Recycled Aggregate" Buildings 13, no. 10: 2601. https://doi.org/10.3390/buildings13102601