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Mechanical properties of cement (ASTM C136/C136M-19)_
| Surface area (cm2/gm) | Coagulation time (min) | Flexural strength (MPa) | Compressive strength (MPa) | Specific gravity | Soundness (mm) | |||
|---|---|---|---|---|---|---|---|---|
| 3450 | Initial setting time (min) | Final setting time (min) | 3-days | 28-days | 3-days | 28-days | 3.2 | 1 |
| 100 | 189 | 5.0 | 8.5 | 24 | 51.2 | |||
Kolmogorov test outcomes of fatigue life distribution_
| Serial number | Stress level | Statistics D n observations |
|---|---|---|
| CS-0 | 0.6 | 0.607 |
| 0.7 | 0.584 | |
| 0.8 | 0.592 | |
| 0.9 | 0.597 | |
| RC-FASF 1 | 0.6 | 0.592 |
| 0.7 | 0.614 | |
| 0.8 | 0.597 | |
| 0.9 | 0.606 | |
| RC-FASF 2 | 0.6 | 0.595 |
| 0.7 | 0.608 | |
| 0.8 | 0.595 | |
| 0.9 | 0.595 | |
| RC-FASF 3 | 0.6 | 0.599 |
| 0.7 | 0.619 | |
| 0.8 | 0.595 | |
| 0.9 | 0.596 |
Physical properties of coarse aggregate (ASTM C136/C136M-19)_
| Apparent density (kg/m3) | Bulk density (kg/m3) | Bulk density (kg/m3) | Specific gravity | Water absorption (%) | Void ratio (%) | Finenesss modulus |
|---|---|---|---|---|---|---|
| 2450 | 1250 | 1452 | 2.25 | 4.5 | 16 | 8 |
Mechanical properties of rubber particles_
| Rubber particle size/mesh | Average particle size/μm | Screen particle size/μm | Screening rate / (%) | Ash content / (%) | Acetone extract / (%) | Tensile strength/ MPa | Tensile elongation/(%) |
|---|---|---|---|---|---|---|---|
| Fine | 562 | 600 | ≥90 | ≤8 | ≤8 | ≥15 | ≥500 |
Physical and chemical properties of cement, fly ash, and silica fume_
| Chemical | SiO2 | CaO | Al2O3 | Fe2O3 | MgO | SO3 | K2O | Na2O | Cl | TiO2 | LOI | P. size μm |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| CEM II | 17.5 | 64.65 | 5.5 | 3.21 | 1.74 | 2.69 | 0.8 | 0.9 | 0.08 | 0.32 | 4.02 | ±20 |
| FA | 0.85 | 52.60 | 0.18 | 0.07 | 0.3 | 0.025 | 0.4 | 0.04 | 0.02 | – | 42.8 | ±25 |
| SF | 94.6 | 0.27 | 0.18 | 0.05 | 0.4 | 0.1 | 0.5 | 0.1 | – | – | – | ±15 |
Specimens mix ratio (kg/m3)_
| Experiments program | Mix ID | Cement (kg/m3) | Fine aggregate (kg/m3) | Coarse aggregate (kg/m3) | Water kg (kg/m3) | Fly ash (kg/m3) | Silica fume (kg/m3) | Tire rubber (kg/m3) | Water admixture chemical |
|---|---|---|---|---|---|---|---|---|---|
| Experiments program (1) | CS-0 | 300 | 690 | 1050 | 170 | 0 | 0 | 0 | 9.00 |
| RC-1 | 300 | 621 | 1050 | 170 | 0 | 0 | 90 | 9.00 | |
| RC-2 | 300 | 586.5 | 1050 | 170 | 0 | 0 | 103.5 | 9.00 | |
| RC-3 | 300 | 552 | 1050 | 170 | 0 | 0 | 138 | 9.00 | |
| RC-4 | 300 | 517.5 | 1050 | 170 | 0 | 0 | 172.5 | 9.00 | |
| Experiments program (2) | RC-1 | 300 | 621 | 1050 | 170 | 0 | 0 | 103.5 | 9.00 |
| RC-FA 1 | 288 | 621 | 1050 | 170 | 12 | 0 | 103.5 | 9.00 | |
| RC-FA 2 | 276 | 621 | 1050 | 170 | 24 | 0 | 103.5 | 9.00 | |
| RC-FA 3 | 264 | 621 | 1050 | 170 | 36 | 0 | 103.5 | 9.00 | |
| Experiments (3) | RC-FASF 1 | 261 | 621 | 1050 | 170 | 24 | 15 | 103.5 | 9.00 |
| RC-FASF 2 | 254 | 621 | 1050 | 170 | 24 | 30 | 103.5 | 9.00 | |
| RC-FASF 3 | 239 | 621 | 1050 | 170 | 24 | 45 | 103.5 | 9.00 |
Fatigue life distribution parameters_
| Serial number | SL |
|
| R2 |
|---|---|---|---|---|
| CS-0 | 0.6 | 4.69395 | 0.16625 | 0.8607 |
| 0.7 | 4.35575 | 0.14915 | 0.9158 | |
| 0.8 | 3.9653 | 0.3154 | 0.95 | |
| 0.9 | 3.4409 | 0.32205 | 0.8512 | |
| RC-FASF 1 | 0.6 | 4.66581 | 0.05766 | 0.81933 |
| 0.7 | 4.49655 | 0.06231 | 0.92907 | |
| 0.8 | 4.18035 | 0.24645 | 0.92628 | |
| 0.9 | 3.44193 | 0.20925 | 0.91884 | |
| RC-FASF 2 | 0.6 | 4.89646 | 0.05922 | 0.93906 |
| 0.7 | 4.68684 | 0.06016 | 0.8413 | |
| 0.8 | 4.4321 | 0.12596 | 0.91744 | |
| 0.9 | 3.80324 | 0.15886 | 0.92496 | |
| RC-FASF 3 | 0.6 | 5.11584 | 0.0624 | 0.95808 |
| 0.7 | 4.9008 | 0.03744 | 0.93024 | |
| 0.8 | 4.75776 | 0.04896 | 0.94656 | |
| 0.9 | 4.38528 | 0.04224 | 0.9456 |
Physical properties of fine aggregate_
| Apparent density (kg/m3) | Bulk density (kg/m3) | Specific gravity | Mud content (%) | Water absorption (%) | Finenesss modulus |
|---|---|---|---|---|---|
| 2450 | 1450 | 2.6 | 0.25 | 1.57 | 3.2 |
Test results of fatigue life_
| Stress level | Fatigue life/time | |||
|---|---|---|---|---|
| CS-0 (reference mix without tire rubber) | 0.6 | 110747.2 | 77649.2 | 66105.75 |
| 0.7 | 47190.3 | 35199.4 | 29375.9 | |
| 0.8 | 23699.65 | 14156.9 | 8511.05 | |
| 0.9 | 6100.9 | 4548.6 | 2263.85 | |
| RC-FASF 1 | 0.6 | 106665.05 | 101401.1 | 89098.6 |
| 0.7 | 72182.9 | 64877.4 | 58683.4 | |
| 0.8 | 44200.65 | 30355.35 | 19553.85 | |
| 0.9 | 6848.55 | 4635.05 | 3443.75 | |
| RC-FASF 2 | 0.6 | 169221.6 | 154044.4 | 139356.45 |
| 0.7 | 102379.6 | 89624.9 | 84961.35 | |
| 0.8 | 59780.65 | 50621.7 | 39684.35 | |
| 0.9 | 13527.05 | 10862.3 | 8056.95 | |
| RC-FASF-3 | 0.6 | 223484.65 | 203519.45 | 183315.8 |
| 0.7 | 127936.5 | 122068.35 | 113680.8 | |
| 0.8 | 92416.95 | 86372.1 | 79025.75 | |
| 0.9 | 37690.3 | 34866.9 | 32903.25 | |