Claims
- 1. A cement admixture comprising a mixture of (a) at least one alkyl ether oxyalkylene adduct represented by the formula RO(AO).sub.n H wherein A is a C.sub.2 -C.sub.4 alkylene radical, O is oxygen, R is a C.sub.1 -C.sub.7 alkyl or C.sub.5 -C.sub.6 cycloalkyl group, and n is an integer of from 1 to 5; and (b) a sulfonated organocyclic material in a weight ratio of (a) to (b) in the range of 0.7 to about 7.
- 2. The admixture of claim 1 wherein component (b) is selected from the group consisting of naphthalene sulfonate formaldehyde condensate or melamine sulfonate formaldehyde condensate.
- 3. The admixture of claim 2 wherein the weight ratio of (a) to (b) is in the range of from about 1.5 to about 3.
- 4. The admixture of claim 2 wherein R represents a butyl group and n represents an integer of 2 or 3 and component (b) is naphthalene sulfonate formaldehyde condensate.
- 5. The admixture of claim 2 wherein R represents a butyl group and n represents an integer of 2 or 3 and component (b) is melamine sulfonate formaldehyde condensate.
- 6. The admixture of claim 2 further comprising a cement additive selected from the group consisting of hardening accelerators, hardening retarders, corrosion inhibitors, and air entraining agents.
- 7. The admixture of claim 2 wherein the admixture is a homogeneous composition composed of a neat mixture of adduct, sulfonated organocyclic material and from about 0.1 to 1 percent by weight of a carboxylic acid derivative surfactant based on the weight of the sulfonated organocyclic material.
- 8. An improved cement composition comprising a mortar composition composed of a hydraulic cement, sand and water or a concrete composition composed of hydraulic cement, sand, large aggregate and water wherein the hydraulic cement comprises an admixture according to claims 1, 2, 3, 4, 5, 6, or 7, which comprises from 0.5 to about 4 weight percent of component (a) and from 0.35 to 1 weight percent of component (b) based on the weight of hydraulic cement.
- 9. The cement composition of claim 8 which is a concrete composed of hydraulic cement, sand, aggregate and water and said water to cement ratio is from 0.25 to 0.7.
- 10. A method of preparing a cement composition comprising introducing into an unset cement composition a mixture comprising (a) from about 0.5 to 4 weight percent based on the cement content of the composition of at least one alkyl ether oxyalkylene adduct represented by the formula RO(AO).sub.n H wherein A is a C.sub.2 -C.sub.4 alkylene radical, O is oxygen, R is a C.sub.1 -C.sub.7 alkyl or C.sub.5 -C.sub.6 cycloalkyl group, and n is an integer of from 1 to 5; and (b) from about 0.5 to 1 weight percent based on the weight of the cement content of the composition of a sulfonated organocyclic material, said components (a) and (b) being present in a weight ratio of about 0.7 to about 7; casting and shaping the cement composition; and permitting said composition to cure.
- 11. The method of claim 10 wherein component (b) is selected from the group consisting of naphthalene sulfonate formaldehyde condensate or melamine sulfonate formaldehyde condensate.
Parent Case Info
This is a continuation of application Ser. No. 08/398,718, filed Mar. 6, 1995, now abandoned.
US Referenced Citations (10)
Foreign Referenced Citations (1)
Number |
Date |
Country |
59-184753 |
Oct 1984 |
JPX |
Continuations (1)
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Number |
Date |
Country |
Parent |
398718 |
Mar 1995 |
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