Settable composition containing potassium sulfate
OwnerRonald Lee Barbourinventor
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Abstract
The present invention relates to settable compositions for general purpose concrete construction containing Class-F fly ash, Class-C fly ash or slag, and potassium sulfate (K2SO4) as a substantial replacement for Portland cement conventionally used in such compositions. The potassium sulfate is an additive for improved high early strength and accelerated setting times, thereby allowing the concrete structure to be put into service sooner, reducing labor cost, and allowing precast concrete and concrete masonry manufacturers to achieve rapid form and mold turnover.
Claims62
A settable composition comprising cement, Class-F fly ash, and about 1 percent to about 5 percent potassium sulfate, wherein all percentages are based on the total weight of the composition.
A settable composition comprising cement, Class-C fly ash, and about 1 percent to about 5 percent potassium sulfate, wherein all percentages are based on the total weight of the composition.
A settable composition comprising cement, Class-C fly ash, Class-F fly ash, and about 1 percent to about 5 percent potassium sulfate, wherein all percentages are based on the total weight of the composition.
A settable composition comprising at least about 50 percent cement, slag, and about 1 percent to about 5 percent potassium sulfate, wherein all percentages are based on the total weight of the composition.
A method of making concrete comprising steps of
- i) mixing cement and potassium sulfate with water, sand, and gravel to form a mixture;
- ii) forming the mixture into a desired shape;
- and
- iii) allowing the mixture to harden to form concrete.
A method of making concrete comprising steps of
- i) mixing cement, Class-F fly ash, and potassium sulfate with water, sand, and gravel to form a mixture;
- ii) forming the mixture into a desired shape;
- and
- iii) allowing the mixture to harden to form concrete.
A method of making concrete comprising steps of
- i) mixing cement, Class-C fly ash, and potassium sulfate with water, sand, and gravel to form a mixture;
- ii) forming the mixture into a shape;
- and
- iii) allowing the mixture to harden to form concrete.
A method of making concrete comprising steps of
- i) mixing cement, Class-C fly ash, Class-F fly ash, and potassium sulfate with water, sand, and gravel to form a mixture;
- ii) forming the mixture into a shape;
- and
- iii) allowing the mixture to harden to form concrete.
A method of making concrete comprising steps of
- i) mixing cement, slag, and potassium sulfate with water, sand, and gravel to form a mixture;
- ii) forming the mixture into a shape;
- and
- iii) allowing the mixture to harden to form concrete.
Dependencies are inferred from the claim text.