Research Article
Cement-Stabilized Granular Volcanic Ash Materials for Construction of Low-Traffic Roads in Yemen
Table 1
Geotechnical characteristics of two GVA materials.
| Property | Value | Test standard [31] | Red GVA | Black GVA |
| Apparent specific gravity (Gs) | 2.51 | 2.11 | ASTM C 127 and ASTM C 128 | Water absorption % | 13.37 | 18.23 |
| Los angeles abrasion % | 48 | 55.9 | ASTM C131 |
| Liquid Limit (LL) | Nonplastic | Nonplastic | ASTM D4318 | Plasticity Index (P I) | Nonplastic | Nonplastic |
| Gravel (80–4.75 mm) % | 79.29 | 52.93 | ASTM D421 | Sand (4.75–0.075 mm) % | 20.31 | 46.77 | Fines (less than 0.075 mm) % | 0.4 | 0.30 | Uniformity coefficient (Cu) | 1 | 3 | Coefficient of curvature (Cc) | 2.3 | 1.2 |
| Classification by unified soil system | (GP) | (GP) | ASTM D2487 | Classification by AASHTO system | A-1-a (0) | A-1-a (0) | ASTM D3282 | Fineness modulus | 5.26 | 5.47 | ASTM C125 |
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