Laboratory Investigation of Packing Characteristics and Mechanical Performance of Aggregate Blend
Abstract
1. Introduction
2. Materials and Methods
2.1. Materials
2.2. Aggregate Blends
2.3. Packing Test
2.4. California Bearing Ratio (CBR) Test
3. Results and Discussion
3.1. Packing Characteristics of Aggregate Blend
3.1.1. Single-Size Blends
3.1.2. Two-Size Blends
3.1.3. Multi-Size Blends
3.2. Mechanical Performance of Aggregate Blend
3.2.1. Single-Size Blends
3.2.2. Two-Size Blends
3.2.3. Multi-Size Blends
3.3. Relationship Between Packing Characteristics and Mechanical Performance
3.3.1. Single-Size Blends
3.3.2. Two-Size Blends
3.3.3. Multi-Size Blends
4. Conclusions
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Conflicts of Interest
References
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Size (mm) | Bulk Density (g/cm3) | Los Angeles Abrasion | Water Absorption (%) | Hydrophilic Coefficient | Water Content (%) |
---|---|---|---|---|---|
26.5–31.5 | 2.854 | ≤28% | 0.450 | / | / |
19–26.5 | 2.928 | 0.438 | / | / | |
16–19 | 2.892 | 0.445 | / | / | |
13.2–16 | 2.829 | 0.462 | / | / | |
9.5–13.2 | 2.764 | 0.600 | / | / | |
4.75–9.5 | 2.762 | 0.718 | / | / | |
2.36–4.75 | 2.669 | / | 0.430 | / | / |
1.18–2.36 | 2.622 | / | 1.312 | / | / |
0.6–1.18 | 2.601 | / | 1.526 | / | / |
0.3–0.6 | 2.629 | / | 1.127 | / | / |
0.15–0.3 | 2.599 | / | 1.251 | / | / |
0.075–0.15 | 2.567 | / | 1.691 | / | / |
Filler | 2.802 | / | / | 0.7 | 0.33 |
Aggregate Blend | Composition |
---|---|
Single-size | A16, A13.2, A9.5, A4.75, A2.36, A1.18 |
Two-size | 16 + 4.75, 16 + 2.36, 16 + 1.18, 4.75 + 2.36, 4.75 + 1.18, 2.36 + 1.18 (The mass ratios of the smaller particles to larger particles are, respectively, 1:10, 2:10, 3:10, 4:10, 5:10, 6:10, 7:10, 8:10, 9:10, and 10:10, i.e., the mass percentages of the smaller particles are, respectively, 9.1%, 16.7%, 23.1%, 28.6%, 33.3%, 37.5%, 41.2%, 44.4%, 47.4%, and 50%) |
Multi-size | A9.5-M, A4.75-M, A2.36-M, A1.18-M, A0.6-M, A0.3-M, A0.15-M, A0.075-M, A (The composition ratio of each blend was determined according to SMA16 and AC25) |
Penetration depth (mm) | 2.5 | 5.0 | 7.5 | 10.0 | 12.5 |
Standard pressure (MPa) | 7.0 | 10.5 | 13.4 | 16.2 | 18.3 |
Blend Type | Fitting Equations | R2 |
---|---|---|
16 + 4.75 | y = (−0.008 ± 0.001)x2 + (1.464 ± 0.181)x – (4.933 ± 6.52) | 0.98 |
16 + 2.36 | y = (−0.013 ± 0.002)x2 + (2.373 ± 0.363)x – (44.25 ± 13.24) | 0.96 |
16 + 1.18 | y = (−0.01 ± 0.002)x2 + (2.057 ± 0.378)x – (39.57 ± 14.02) | 0.97 |
4.75 + 2.36 | y = (−0.01 ± 0.001)x2 + (1.478 ± 0.157)x – (9.673 ± 5.64) | 0.92 |
4.75 + 1.18 | y = (−0.013 ± 0.002)x2 + (2.136 ± 0.294)x – (42.89 ± 10.76) | 0.91 |
2.36 + 1.18 | y = (−0.011 ± 0.002)x2 + (1.716 ± 0.368)x – (31.86 ± 13.26) | 0.77 |
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Yu, W.; Li, Y.; Liang, Z.; Wu, J.; Wang, S.; Miao, Y. Laboratory Investigation of Packing Characteristics and Mechanical Performance of Aggregate Blend. Materials 2025, 18, 1953. https://doi.org/10.3390/ma18091953
Yu W, Li Y, Liang Z, Wu J, Wang S, Miao Y. Laboratory Investigation of Packing Characteristics and Mechanical Performance of Aggregate Blend. Materials. 2025; 18(9):1953. https://doi.org/10.3390/ma18091953
Chicago/Turabian StyleYu, Weixiao, Yun Li, Zhipeng Liang, Jiaxi Wu, Sudi Wang, and Yinghao Miao. 2025. "Laboratory Investigation of Packing Characteristics and Mechanical Performance of Aggregate Blend" Materials 18, no. 9: 1953. https://doi.org/10.3390/ma18091953
APA StyleYu, W., Li, Y., Liang, Z., Wu, J., Wang, S., & Miao, Y. (2025). Laboratory Investigation of Packing Characteristics and Mechanical Performance of Aggregate Blend. Materials, 18(9), 1953. https://doi.org/10.3390/ma18091953