Table 4.
Characteristic value statistics of the stress–strain curve.
| Group | Rds/% | Vsf/% | σmax/MPa | ε0 | εcu | εF |
|---|---|---|---|---|---|---|
| JZ-0 | 0 | 0 | 37.9 | 0.0026 | 0.0032 | 0.0100 |
| JZ-1 | 20 | 0.5 | 43.8 | 0.0038 | 0.0030 | 0.0173 |
| JZ-2 | 20 | 1.0 | 43.5 | 0.0024 | 0.0049 | 0.0108 |
| JZ-3 | 20 | 1.5 | 42.8 | 0.0033 | 0.0047 | 0.0112 |
| JZ-4 | 20 | 2.0 | 42.3 | 0.0040 | 0.0065 | 0.0134 |
| JZ-5 | 40 | 0.5 | 45.3 | 0.0032 | 0.0047 | 0.0133 |
| JZ-6 | 40 | 1.0 | 46.0 | 0.0021 | 0.0050 | 0.0113 |
| JZ-7 | 40 | 1.5 | 49.5 | 0.0025 | 0.0059 | 0.0116 |
| JZ-8 | 40 | 2.0 | 49.1 | 0.0034 | 0.0076 | 0.0163 |
| JZ-9 | 60 | 0.5 | 47.4 | 0.0036 | 0.0053 | 0.0155 |
| JZ-10 | 60 | 1.0 | 44.1 | 0.0035 | 0.0047 | 0.0124 |
| JZ-11 | 60 | 1.5 | 45.1 | 0.0031 | 0.0040 | 0.0137 |
| JZ-12 | 60 | 2.0 | 44.5 | 0.0047 | 0.0054 | 0.0198 |
| JZ-13 | 40 | 0 | 38.4 | 0.0034 | 0.0058 | 0.0159 |
Rds means replacement rate of desert sand; Vsf means volume content of steel fiber; σmax is peak stress; ε0 is perk strain; εcu is ultimate strain, take the value at 0.85σmax in the descending section of the stress–strain curve; εF is the strain when the specimen is unstable.