A Workability Characterization of Innovative Rubber Concrete as a Grouting Material
Abstract
:1. Introduction
2. Materials
3. Specimen Preparation and Experimental Program
4. Workability Evaluation
4.1. Slurry Density Test
4.2. Consistency Test
4.3. Fluidity Test
4.4. Bleeding Rate Test
4.5. Consolidation Shrinkage Rate Test
4.6. Setting Time Test
4.7. Unconfined Compressive Strength (UCS) Test
5. Results and Discussions
5.1. Verification of Repeatability
5.2. Effect of Rubber and Porous Sand on Aggregate
5.3. Effect of Fiber Content
5.4. Effect of Fiber Length
6. Conclusions
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Conflicts of Interest
References
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Composition | Content (%) |
---|---|
CaO | 61.11 |
SiO2 | 24.3 |
Al2O3 | 5.33 |
Fe2O3 | 4.38 |
SO3 | 2.24 |
MgO | 1.36 |
Loss on ignition | 1.28 |
Diameter (mm) | Modulus of Elasticity (MPa) | Tensile Strength (MPa) | Elongation at Break (%) | Density (g/cm3) |
---|---|---|---|---|
0.2 | 15,000 | 950 | 27 | 0.91 |
Size (mm) | Bulk Density (g/cm3) | Maximum Absorbed Water (%) |
---|---|---|
1–1.5 | 117 | 43 |
Test No. | Abbreviation | Water (g) | Cement (g) | Porous Sand (g) | Rubber (g) | Rubber Content (%) | Fiber (g) | Fiber Content (%) | Fiber Length (mm) |
---|---|---|---|---|---|---|---|---|---|
A1 | R0% | 1 | 1.67 | 0.19 | 0.00 | 0% | / | / | / |
A2 | R20% | 1 | 1.67 | 0.15 | 0.26 | 20% | / | / | / |
A3 | R40% | 1 | 1.67 | 0.11 | 0.53 | 40% | / | / | / |
A4 | R60% | 1 | 1.67 | 0.08 | 0.79 | 60% | / | / | / |
A5 | R80% | 1 | 1.67 | 0.04 | 1.06 | 80% | / | / | / |
B1 | F9(0.2%) | 1 | 1.67 | 0.08 | 0.79 | 60% | 0.0086 | 0.20% | 9 |
B2 | F9(0.4%) | 1 | 1.67 | 0.08 | 0.79 | 60% | 0.0172 | 0.40% | 9 |
B3 | F9(0.6%) | 1 | 1.67 | 0.08 | 0.79 | 60% | 0.0259 | 0.60% | 9 |
B4 | F9(0.8%) | 1 | 1.67 | 0.08 | 0.79 | 60% | 0.0346 | 0.80% | 9 |
B5 | F9(1%) | 1 | 1.67 | 0.08 | 0.79 | 60% | 0.0434 | 1.00% | 9 |
C1 | F3(0.2%) | 1 | 1.67 | 0.08 | 0.79 | 60% | 0.0086 | 0.20% | 3 |
C2 | F6(0.2%) | 1 | 1.67 | 0.08 | 0.79 | 60% | 0.0086 | 0.20% | 6 |
B1 | F9(0.2%) | 1 | 1.67 | 0.08 | 0.79 | 60% | 0.0086 | 0.20% | 9 |
C3 | F12(0.2%) | 1 | 1.67 | 0.08 | 0.79 | 60% | 0.0086 | 0.20% | 12 |
C4 | F15(0.2%) | 1 | 1.67 | 0.08 | 0.79 | 60% | 0.0086 | 0.20% | 15 |
Test | Standard for the Experiment | Recommended Requirement |
---|---|---|
Slurry density (g/cm3) | JGJ/T 70-2009 [38] | ≤1.9 |
Consistency (cm) | JGJ/T 70-2009 [38] | 10–14 |
Fluidity (cm) | GB/T 2419-2005 [42] | 16–24 |
Bleeding rate (%) | T/CECS 563-2018 [43] | ≤3.5 |
Consolidation shrinkage rate (%) | T/CECS 563-2018 [43] | 5 |
Setting time (h) | JGJ/T 70-2009 [38] | 12–24 |
3D compressive strength (MPa) | GB/T 50266-2013 [44] | ≥0.5 |
28D compressive strength (MPa) | GB/T 50266-2013 [44] | ≥2.5 |
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Lu, Y.; Li, C.; Zhang, X.; Huang, X.; Zhao, Z. A Workability Characterization of Innovative Rubber Concrete as a Grouting Material. Materials 2022, 15, 5319. https://doi.org/10.3390/ma15155319
Lu Y, Li C, Zhang X, Huang X, Zhao Z. A Workability Characterization of Innovative Rubber Concrete as a Grouting Material. Materials. 2022; 15(15):5319. https://doi.org/10.3390/ma15155319
Chicago/Turabian StyleLu, Yi, Cong Li, Xiaoyu Zhang, Xiangyun Huang, and Zhongyin Zhao. 2022. "A Workability Characterization of Innovative Rubber Concrete as a Grouting Material" Materials 15, no. 15: 5319. https://doi.org/10.3390/ma15155319