skos:altLabel | - OPC
- Portland
- cement
- ASTM C150
- General Portland Cement
- Portland Cement
- Portland Cement Works
- Portland limestone cement
- Portland render
- Portland-based
- Portland-type cements
- Portland_cement#Environmental_effects
- Portland_cement#General
- Specification for Portland Cement
- Type II 32.5R and Type II 42.5R
- cast-in-place
- cement production
- cement works
- development of modern cement
- general purpose concrete
- modern concrete
- ordinary Portland cement
- portland
- portland cement
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