Table 1.
Chemical composition of Portland cement [wt.%].
| CaO | SiO2 | Fe2O3 | SO3 | Al2O3 | MgO | K2O | Cl− | Na2O |
|---|---|---|---|---|---|---|---|---|
| 63.77 | 21.07 | 4.12 | 3.2 | 3.11 | 0.58 | 0.37 | 0.071 | 0.05 |
Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.