Figure 1.
Mixture of cement, CNTs and isopropanol in the ultrasonic bath being mechanically agitated
Table 1.
Proportions of materials used to prepare cement pastes with CNTs dispersed on cement particles
| Identification | Materials | Weight Composition (g) |
|---|---|---|
| REF-ISO-P | CP-V Cement | 3 000.00 |
| Water | 990 | |
| 0.05%-ISO-P | CP-V Cement | 3 000.00 |
| Water | 990 | |
| CNTs | 1.5 | |
| 0.10%-ISO-P | CP-V Cement | 3 000.00 |
| Water | 990 | |
| CNTs | 3 |
Figure 2.
a) compressive strength test setup; b) splitting tensile strength test using an apparatus specially developed for the test
Table 2.
Results obtained in the compressive and splitting tensile strength tests
| Compressive strength | Splitting tensile strength | |||||
|---|---|---|---|---|---|---|
| Identification | Average | Standard | Strength | Average | Standard | Strength |
| strength | deviation | gain | strength | deviation | gain | |
| (MPa) | (MPa) | (MPa) | (MPa) | |||
| REF - ISO - P | 38.24 | 6.84 | - | 2.13 | 0.18 | - |
| 0.05 - ISO - P | 55.44 | 9.27 | 45% | 3.17 | 0.47 | 49% |
| 0.10 - ISO - P | 51.74 | 5.91 | 35% | 2.55 | 0.09 | 20% |
Figure 3.
Compressive strength test results
Figure 4.
Splitting tensile strength test results