Table 2 Effects of GO and SBS on the physical properties of asphalt. (Three equal samples are tested for different properties; the data in the table are average values and numbers in the parentheses show the standard deviation).
Asphalt | Softening point (°C) | Penetration at 25 °C (mm) | Ductility at 5 °C (mm) |
|---|---|---|---|
70A | 48.6 (0.047) | 7.102 (0.134) | 85 (0.471) |
70A + 1%SBS | 50.0 (0.163) | 5.849 (0.097) | 72 (0.816) |
70A + 3%SBS | 53.4 (0.082) | 5.650 (0.077) | 98 (0.816) |
70A + 5%SBS | 61.3 (0.245) | 5.025 (0.079) | 179 (1.633) |
70A + 7%SBS | 73.0 (0.327) | 3.680 (0.063) | 48 (0.816) |
70A + 9%SBS | 86.2 (0.498) | 2.707 (0.058) | 19 (0.471) |
70A + 11%SBS | 91.6 (0.408) | 2.350 (0.050) | 13 (0.471) |
70A + 13%SBS | 95.3 (0.368) | 2.013 (0.044) | 14 (0.816) |
70A + 0.05%GO | 49.2 (0.047) | 6.898 (0.141) | 61 (1.633) |
70A + 0.2%GO | 49.6 (0.082) | 6.951 (0.153) | 62 (0.471) |
70A + 0.5%GO | 49.8 (0.125) | 6.321 (0.113) | 59 (0.471) |
70A + 5%SBS + 0.2%GO | 71.6 (0.163) | 5.036 (0.083) | 241 (3.682) |
70A + 5%SBS + 0.5%GO | 72.6 (0.205) | 5.012 (0.062) | 243 (3.266) |
70A + 9%SBS + 0.2%GO | 87.5 (0.125) | 2.572 (0.035) | 24 (0.816) |
70A + 9%SBS + 0.5%GO | 88.2 (0.205) | 2.498 (0.051) | 14 (0.816) |
