Research Article
Study on the Mechanical Properties and Thermal Conductivity of Cotton Stalk Fiber Heat-Insulating Shotcrete
Table 6
Physical and mechanical parameters of shotcrete.
| | No. | Fiber content (kg·m−3) | Compressive strength (MPa) | Increase amplitude (%) | Tensile strength (MPa) | Increase amplitude (%) | Thermal conductivity (w k/m) | Increase amplitude (%) | Bending resistance (MPa) | Amplification (%) |
| | C | 0 | 33.7 | 0 | 2.28 | 0 | 0.3988 | 0 | 3.21 | 0 | | PL1 | 0.5 | 35.6 | 5.7 | 2.45 | 7.5 | 0.3689 | −7.3 | 3.58 | 11.53 | | PL2 | 1.0 | 37.8 | 12.0 | 2.59 | 13.7 | 0.3474 | −13.0 | 3.79 | 18.07 | | PL3 | 1.5 | 39.1 | 15.8 | 2.69 | 18.1 | 0.3279 | −17.3 | 3.98 | 23.99 | | PL4 | 2.0 | 39.6 | 17.4 | 2.73 | 20.3 | 0.3183 | −20.6 | 4.26 | 32.71 | | PL5 | 2.5 | 38.0 | 12.8 | 2.62 | 15.0 | 0.3101 | −22.1 | 3.87 | 18.69 | | PL6 | 3.0 | 36.5 | 8.3 | 2.48 | 10.0 | 0.3072 | −22.9 | 3.59 | 11.84 |
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