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4188231 |
Methods of preparing iron oxide mortars or cements with admixtures and the resulting products
A mortar or cement composition is provided which is adapted for being mixed with water and thereafter set. The composition comprises cement mixed with iron oxide in a ratio of about 1:4. At least...
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4149900 |
Oil well cementing composition
Oil well cementing compositions and processes are produced using a high efficiency sulfoalkylated lignin retarder composition and modifications thereof to produce cement compositions without...
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4144086 |
Additive for concrete
Concrete products having a high strength after a short hardening time are manufactured by adding sodium sulphate to a conventional concrete mixture in a quantity of 0.1 - 5 per cent by weight of...
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4137093 |
Setting retarding composition for well cementing and recementing
The present invention relates to an improved composition that retards setting in the cementing and recementing of oil well casings, which can be applied at depths that vary between 13123.4 and...
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4129447 |
Process for the preparation of hydrophobic agents
A process for preparing hydrophobic agents which comprises slaking caustic lime with water containing a protective colloid, a salt of an acid having the formula R(O) a SO 3 H in which R is...
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4116706 |
Additive composition for hydraulic cement compositions
An improved additive composition for accelerating the rate of hydration and increasing the compressive strength of hydraulic cement compositions such as Portland cement concrete contains a...
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4093471 |
Glass fiber reinforced cement composite materials
Glass fiber reinforced cement composite materials are made by first preparing a cement slurry from a cement/water mix by a high shear mixing process which breaks up cement agglomerates into their...
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4080217 |
Alumino-calcium compounds and their utility in hydraulic binders
Certain alumino-calcium compounds are added to hydraulic binders, as water reducing agents for enhancing the workability of such binders while at the same time reducing the requisite quantities of...
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4026723 |
Admixture of alkali-metal nitrate with water-soluble condensate of sulfonated aromatic hydrocarbon and aliphatic aldehyde
A composition comprising a major proportion of alkali-metal nitrate and a minor proportion of water-soluble condensate of sulfonated aromatic hydrocarbon with aliphatic aldehyde has a synergistic...
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4003431 |
Process of cementing wells
A method of cementing oil, gas or water wells and the like, wherein a solution, dispersion, suspension, or the like of a cement additive in water is prepared at a predetermined concentration of...
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4001033 |
Composition and method for soil stabilization
A composition, useful for stabilizing soil, comprised of lignin sulfonate and a combination of dispersants, and a method of stabilizing soil utilizing the composition. The composition and method...
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3980484 |
Fiber reinforced structural material and method of manufacture
A formable matrix used as structural material and having an admixture of reinforcing non-metallic meltable fibers. The fibers have enlarged knob-like ends serving as anchors to enhance the bonding...
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3905826 |
Setting retarder composition for use in cementation and recementation of cased oil wells
A setting retarding composition for cement comprising a mixture of carboxymethyl cellulose, borax and dextrin in ranges producing a synergistic effect.
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3870538 |
Gypsum set accelerator
A gypsum set accelerator, produced by compression milling a mixture of ground gypsum rock and starch, and the addition thereof to an aqueous slurry of settable calcined gypsum such as in the...
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3867163 |
Process for regulating setting time of hydraulic cement
The present invention is an improved one of the U.S. Patent 3,782,992 and relates to a process for regulating setting time of hydraulic cement which comprises clinker containing 5-60 percent by...
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3865803 |
Modified lignin surfactants
The improved lignin surfactant of this invention is a lignin modified by reaction with from about 1 to 20 moles, preferably from 2 to 10 moles, per 1000 grams of lignin, of an agent of the type...
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3663251 |
ADDITIVE FOR CONCRETE AND MORTAR
The invention relates to an additive or mixture for improving the workability and strength and reducing the air content of inorganic binder, and especially hydraulic cement-containing compositions...
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3615223 |
CEMENT RETARDER DETERMINATION
Method for determining the distribution of a retarder calcium lignosulfonate or tartaric acid, in the dry ingredients of an oil well-cementing composition, wherein a test sample is mixed with an...
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3530112 |
PROCESS FOR PREPARING DISPERSANTS USEFUL IN HYDRAULIC CEMENT SLURRIES
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3519449 |
CEMENTITIOUS COMPOSITIONS HAVING INHIBITED SHRINKAGE AND METHOD FOR PRODUCING SAME
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3443975 |
VINYL ACETATE GRINDING AID
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3420687 |
METHOD OF INCREASING THE GRINDING EFFICIENCIES OF MINERALS AND CEMENT
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3365319 |
High strength inorganic cement compositions
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3197323 |
Admixture for cementitious grouts and method of making same
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3180748 |
High-temperature well cement
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3090799 |
Pentaerythritol esters of phosphoric acids and compositions containing the same
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3090693 |
Mortar additives
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3086273 |
Method for pre-stressing concrete
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3029250 |
Succinimide compounds
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2985239 |
Cement compositions and process of cementing wells
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2965678 |
Polyoxyethylene ethers of branched chain alcohols
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2891057 |
Methods of making cellulose ethers
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2860060 |
Hydraulic cement additives and cement compositions containing same
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3782991 |
Title is not available
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3726850 |
Title is not available
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3723145 |
Title is not available
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3573947 |
Title is not available
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3686133 |
Title is not available
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3709707 |
Title is not available
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3826665 |
Title is not available
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