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US 6,554,894 B2Granted
Masonry cement composition and method of making
AssigneeMineral Resource Technologies, LLC
InventorsRobert William Styron, Richard George Basaraba, James Kenneth Hicks
Life of this patent
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Abstract
A masonry cement composition is provided which contains a blend of fly ash, Portland cement, a retarding agent, and an air entrainment agent. The masonry cement composition may be formed into a mortar having a high air content which exhibits good compressive strength and does not exhibit efflorescence.
Claims11
A masonry cement composition comprising:
- from about 0.1 to 10% by weight Portland cement;
- from about 0.1 to 5% by weight potassium carbonate;
- from about 0.1 to 30% by weight of a retarding agent;
- from about 0.1 to 5% by weight of an air entraining agent;
- from about 0.1 to 3% by weight of a chelating agent;
- and
- the balance fly ash;
- wherein said masonry cement composition, when formed into a mortar, exhibits a compressive strength of at least 1400 psi after seven days and an air content of at least 17% by weight.
5 more elements
A method of making a masonry cement composition comprising:
- a) providing from about 80 to 95% by weight fly ash having a lime content of at least 21% by weight;
- b) separating from about 5 to 20% by weight of said fly ash;
- c) adding to said separated fly ash a retarding agent and Portland cement to form a mixture;
- d) adding an air entraining agent to said mixture;
- e) adding a chelating agent to said mixture:
- f) blending the remaining portion of said fly ash with said mixture;
- wherein said masonry cement composition is further formed into a mortar;
- said mortar exhibiting a compressive strength of 1400 psi after seven days and an air content of at least 17% by weight.
5 more elements
Dependencies are inferred from the claim text.