When accessing any standard, ensure you're using a reputable source to guarantee the accuracy and validity of the content.
The specification categorizes Portland cement into ten distinct types based on their intended application: 分析测试百科网 For general use when no special properties are required.
| Property | Requirement (max %) | |----------|---------------------| | Silicon dioxide (SiO₂) | No min/max – but calculated Bogue compounds apply | | Aluminum oxide (Al₂O₃) | No direct max – used for C₃A calc | | Ferric oxide (Fe₂O₃) | No direct max | | Magnesium oxide (MgO) | 6.0% (unless autoclave expansion ≤0.80%) | | Sulfur trioxide (SO₃) | 3.0% for C₃A ≤8%; 3.5% for C₃A >8% | | Loss on ignition (LOI) | 3.0% | | Insoluble residue | 0.75% | | Tricalcium aluminate (C₃A) | No mandatory max for Type I – but calculated from chemical analysis |
: You can buy the current version directly from the ASTM C150 Product Page .