Concrete compositions and method for making same
AssigneeNew Technology Solutions, LLC
InventorsDavid M. Brassard, Dwayne Dillingham
Life of this patent
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Abstract
A process of preparing a concrete mixture includes the following steps: (a) providing a nano-sized non-sand silica and water; (b) mixing the non-sand silica with the water to form a silica-water mixture; (c) mixing an acid into the silica-water mixture to form a treated water; (d) mixing Portland cement and the treated water for a time sufficient to wet the Portland cement with the treated water to form a Portland/treated-water mixture; (e) mixing aggregate and the Portland-treated-water mixture to form an uncured concrete; and (f) allowing the uncured concrete to cure to form a cured concrete.
Claims29
1-28. (canceled)
A process of preparing a concrete mixture, including the following steps in order:
- (i) providing a nano-sized non-sand silica and water;
- (ii) mixing the non-sand silica with the water to form a silica-water mixture;
- (iii) mixing an acid into the silica-water mixture to form a treated water;
- (iv) combining Portland cement with the treated water and mixing;
- and
- (v) combining aggregate with the Portland cement-treated water mixture and mixing,
- wherein the combined Portland cement, aggregate and treated water form an uncured concrete and allowing the uncured concrete to cure to form a cured concrete.
A concrete product prepared by steps including:
- (I) providing a nano-sized non-sand silica and water;
- (II) mixing the non-sand silica with the water to form a silica-water mixture;
- (III) mixing an acid into the silica-water mixture to form a treated water;
- (IV) combining Portland cement with the treated water and mixing;
- and
- (V) combining aggregate with the Portland cement treated-water mixture and mixing,
- wherein the combined Portland cement, aggregate and treated water form an uncured concrete and allowing the uncured concrete to cure to form a cured concrete,
- wherein the uncured or cured concrete made by the foregoing steps provides one or a combination of any two or more of features A, B, C, D, E and F:
- A. the uncured concrete has a pH in the range from about 11 to about 12.6 and a reduced level of Ca(OH)2 formed during the curing, which are significantly lower than in conventional concretes;
- B. during the allowing step, the uncured concrete remains workable for at least about 3 hours, and up to about 48 hours, after the step of mixing to form the uncured concrete, due to the thixotropic nature of the concrete mixture;
- C. the uncured concrete has an initial, post-mixing temperature, during the allowing step the concrete produces a curing exotherm, and the curing exotherm results in a temperature increase of 8° C. or less with respect to the initial temperature;
- D. during the allowing step, the uncured concrete substantially does not bleed liquid water, in contrast to conventional concrete mixtures which do bleed water during the curing process;
- E. the cured concrete exhibits no cracking during cure, when applied over a proper base, even without saw cutting the concrete to prevent cracks from forming during cure as a result of thermal expansion during curing;
- and
- F. the cured concrete exhibits compressive strengths of about 8000 psi versus the 5800 psi for an equivalent standard 6 sack mix of conventional concrete.
An uncured concrete mixture comprising:
- (a) water;
- (b) nano-sized non-sand silica and water;
- (c) at least one acid composition;
- (d) Portland cement;
- (e) sand;
- and
- (f) at least one aggregate,
- wherein the combination of components (a) through (f) yield a concrete composition the has a low exotherm during cure.
Dependencies are inferred from the claim text.