PORTLAND CEMENT
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Portland Cement is the Active Ingredient in Cementitious Products.
What it is: A fine, gray powder made from heating up limestone, clay, and other natural materials
What it does: It’s the main ingredient that hardens and holds everything together when mixed with water.
Portland Cement is the essential binder in products like Concrete, Mortar, Stucco and Concrete Grout)—a highly flowable mix used to fill cavities in block walls, anchor rebar, and strengthen masonry.
There are several variations of Portland Cement: High Strength, Fast Setting, and Waterproof Cement to name a few.
(Named after an English town where it was invented in 1824 by Joseph Aspdin)
Other Basic Raw Materials for Cementitious Products
LIME (optional but common in some types of mortar) What it is: A white powder made from limestone What it does: Makes mortar easier to spread and helps it stay flexible, so it’s less likely to crack over time
WATER What it does: When mixed with Portland Cement, it starts a chemical reaction that makes the mix harden. It also helps make the mix easier to work with.
FINE AGGREGATES What it is: Fine grain sand, usually from rivers. Rough edges unlike beach sand What it does: Fills in the space in the mix, adds strength, and helps the cement bond better.
COARSE AGGREGATES What it is: Stones or pieces of rock What it does: In Concrete (but not Mortar or Concrete Grout), gives extra strength and helps make the mix more solid.
