Portland cement is a fine, grey or white powder used as a binding agent in concrete, mortar, and stucco. When mixed with water, sand, and gravel, it undergoes a chemical reaction called hydration to harden into solid rock. A typical 47 lb to 94 lb bag costs between $11 and $19.
What It Is Made Of
- Limestone and Clay: Heated together in a kiln at high heat to form a rock-like material called clinker.
- Gypsum: Ground up with the clinker to control how fast the mixture sets.
- Calcium Silicates: The main active chemical compounds that give concrete its strength
Common Uses
- Concrete Mix: Combined with sand and coarse gravel (typically a 1:2:3 volume ratio).
- Mortar Mix: Mixed with lime and mason sand for laying bricks or stone blocks.
If you are planning a project, tell me:- What are you building or repairing (a slab, brick wall, post hole)?
- How large is the area or what quantities do you need?
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