Method of making an improved concrete
AssigneePARTNERS & CO Inc.
InventorRaymond C. Turpin, Jr.
Life of this patent
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Abstract
A method for preparing an improved concrete wherein a chemical admix is slurried with water and a pozzolan material prior to its incorporation in the concrete. This method reduces the slump loss of the concrete during transportation, and increases its workability in the form at the point of use without any sacrifice in strength.
Claims20
A process for the preparation of ready-mix concrete comprising the following ingredients, water, cement, fine aggregate, a pozzolan material, and a chemical admix selected from the group consisting of derivatives of lignosulfonic acid and its salts and polymer derivatives of sugar, comprising:
- preparing a pozzolan-admix slurry comprising a substantial portion of said chemical admix, pozzolan material, and water;
- mixing said pozzolan-admix slurry for a period of time between five seconds and one minute;
- adding said pozzolan-admix slurry to a mixture comprising one or more of the ingredients of said ready-mix concrete;
- adding the remaining ingredients of said ready-mix concrete;
- and
- mixing said ready-mix concrete.
A process for the preparation of ready-mix concrete comprising the following ingredients, water, cement, fine aggregate, a pozzolan material, and a chemical admix selected from the group consisting of derivatives of lignosulfonic acid and its salts and polymer derivatives of sugar, comprising:
- preparing a mixture comprising cement and water;
- adding a slurry of pozzolan material and water to said mixture comprising cement and water;
- adding a substantial portion of said chemical admix to said slurry of pozzolan material and water to form a pozzolan-admix slurry;
- mixing sai pozzolan-admix slurry for a period of time between five seconds and one minute;
- adding the remaining ingredients of said ready-mix concrete to said mixture comprising cement and water;
- and
- mixing said ready-mix concrete.
A process for the preparation of ready-mix concrete comprising the following ingredients, water, cement, fine aggregate, a pozzolan material, and a chemical admix selected from the group consisting of derivatives of lignosulfonic acid and its salts and polymer derivates of sugar, the improvement comprising:
- preparing a pozzolan-admix slurry comprising a substantial proportion of said chemical admix, pozzolan material, and water;
- mixing said pozzolan-admix slurry for a period of time between five seconds and one minute;
- and
- subsequently adding said pozzolan-admix slurry to a mixture comprising one or more of the other ingredients of said ready-mix concrete.
Dependencies are inferred from the claim text.