Research Article
Freeze-Thaw Performance and Moisture-Induced Damage Resistance of Base Course Stabilized with Slow Setting Bitumen Emulsion-Portland Cement Additives
Table 2
Properties of Type II Portland cement.
| | Components and properties | Requirement (%) | Test result (%) | Test method |
| | Silicon dioxide (SiO2) | 20—min | 20.18 | ASTM C 150, C 114 | | Aluminum oxide (Al2O3) | 6.0—max | 5.23 | ASTM C 150, C 114 | | Calcium oxide (CaO) | Not applicable | 64.40 | ASTM C 150, C 114 | | Ferric oxide (Fe2O3) | 6.0—max | 3.34 | ASTM C 150, C 114 | | Magnesium oxide (MgO) | 6.0—max | 1.80 | ASTM C 150, C 114 | | Sulfur trioxide (SO3) | 6.0—max | 3.03 | ASTM C 150, C 114 | | Loss on ignition | 3.0—max | 2.17 | ASTM C 150, C 114 | | Insoluble residue | 0.75—max | 0.18 | ASTM C 150, C 114 | | Na2O | Not applicable | 0.07 | ASTM C 150, C 114 | | K2O | Not applicable | 0.44 | ASTM C 150, C 114 | | Equivalent alkalies (Na2O + 0.658K2O) | 0.75—max | 0.3595 | ASTM C 150, C 114 | | Tricalcium aluminate (C3A) | 8—max | 3.21 | ASTM C 150, C 114 | | Tricalcium silicate (C3S) | Not applicable | 53.95 | ASTM C 150, C 114 | | Dicalcium silicate (C2S) | Not applicable | 17.32 | ASTM C 150, C 114 | | Tetracalcium alumino-ferrite (C4AF) | Not applicable | 10.16 | ASTM C 150, C 114 | | Sum of (C3S) and (C3A) | 58—max | 57.16 | ASTM C 150, C 114 | | Compressive strength, MPa | | | ASTM C 109/C 109M | | 3 days | 10—min | 27.5 | | 7 days | 17—min | 40.3 | | 28 days | 28—min | 57.7 | | Fineness, specific surface, m2/kg | | | ASTM C 204 | | Air permeability test | 280—Min | 338.1 | | | Autoclave expansion (soundness) | 0.8—Max | 0.5 | ASTM C 151 |
|
|
