Organic material containing

A cementitious composition suitable for spray application in formation of a dense wall structure. The composition has a Brookfield viscosity of about 4,000 to about 9,000 centipoises (cps) as measured at 20 rpm with a number 3 spindle and contains about 50 to about 65 percent by weight of substantially...     

An improved dispersing agent for cement having low foamability and high dispersibility is prepared by sulfonating high aromatic hydrocarbon compounds, and subsequently neutralizing the sulfonated compounds.

An improved hydraulic cement composition having an almost constant air content, which is incorporated with an organic phosphoric acid ester of the formula ##STR1## Wherein R.sub.1 is a group of the formula: R.sub.4 --O--(CH.sub.2 CH.sub.2 O).sub.n -- wherein R.sub.4 is an alkyl having 4 to 18 carbon...     

This specification discloses a method of cementing pipe in a well and discloses a cement slurry which may be used for cementing pipe against evaporite sections penetrated by the well. The cement slurry is formulated from hydraulic cement, silica flour, attapulgite, sodium chloride, weighting agent, dispersing...     

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 the cement. The concrete shall be kept at a temperature of 30.degree.- 90.degree. C. during the mixing process....     

A method is provided for upgrading rock, for example building block, aggregate, preexisting stone structures, portland cement and bituminous concrete structures to render such rock more resistant to degradation resulting from environmental exposure. An organic condensation polymer containing rock treating...     

This invention is directed to a concrete which is capable of inhibiting corrosion of metal pieces contained therein or in contact therewith comprising a high strength concrete formed from hydraulic cement and containing at least about 2 percent Ca(NO.sub.2).sub.2 therein.

A frangible cartridge for anchoring a reinforcing element such as a rock-bolt in a borehole drilled in rock strata, for example an underground mine roof, contains as separate constituents (A) an aqueous liquid and an alkali metal silicate and (B) a gelling agent for the alkali metal silicate, the gelling...     

This invention relates to a process for preparing structural components which comprises preparing a slurry containing a hydraulic binding agent, water, additives and an organo(poly)siloxane of the general formula ##EQU1## where at least 10 percent of the number of R radicals are the same or different...     

A modified hydraulic cement product comprises a hydraulic calcium silicate-based cement having a Blain surface area of at least 3,000 cm.sup.2 /g, and/or an iron content of less than 2.5% by weight expressed in terms of the ferric oxide content of the dry cement, in which the cement has been treated...     

This invention relates to a cement-shrinkage-reducing agent and a cement composition comprising a compound of the general formula RO(AO).sub.n H (in which R represents a C.sub.1-7 alkyl or C.sub.5-6 cycloalkyl radical, A represents one or more C.sub.2-3 alkylene radicals, and n has a value of 1-10) for...     

A hardened cement material having enhanced flexural strength, heat resistance, and water resistance prepared from a cement composition comprising 100 parts by weight of a hydraulic cement material containing .gamma.-dicalcium silicate (.gamma.-C.sub.2 S) preferably in an amount of 1% by weight or more...     

Expanded perlite coated with an amino-functional siloxane and a silicone wetting agent, and a joint compound incorporating same, which, when applied to gypsum wallboard, has improved bonding properties and greater uniformity in paint gloss appearance between the surface of the joint compound and the...     

Cement clinkers are ground in an aqueous environment using as a grinding aid, a composition comprising: PRETEXTREPLACED

A multi-component grouting system having at least one component wherein the active ingredient is contained in the dispersed phase of a water-in-oil emulsion, the oil providing an effective barrier against mixing of the components thereby enabling the components to be stored indefinitely in direct contact....     

The fluidizing or water-retention effect of plasticizers and superplasticizers in cement is increased when the cement has been treated with water before the mixing step, so that it retains from 0.1 to 10% by weight of water.

A shrinkage compensated mortar or grout can be made with about 40 to 60% by weight of fine aggregate and 40 to 60% by weight of a hydraulic composition which in turn is made with 60 to 80% by weight of mixture of rapid hardening cement and 20 to 40% portland cement; and based on the weight of cement,...     

An additive for cement comprising, as the effective component, a copolymer of a polyoxyalkylene derivative represented by following formula (1) and maleic anhydride, a hydrolyzed product of the copolymer, or a salt of the hydrolyzed product; ##STR1## wherein Z represents a residue of a compound having...     

An aqueous dispersant composition for cement comprises 100 parts by weight of a copolymer of an olefin having 2 to 8 carbon atoms and an ethylenically unsaturated dicarboxylic anhydride, the copolymer being in the form of fine particles having an average size of 0.1 to 20 micrometers, 15 to 300 parts...     

A dry mortar mix based on an inorganic bonding agent and optionally additives, plastics, fibres, and other conventional concrete additives is proposed especially to protect concrete structures and/or to eliminate surface damage to such structures. In addition to the inorganic bonding agent, the dry mortar...     

Cement-to-casing sealing in a wellbore is improved through addition of surfactant to the cement.

Cement-to-casing sealing in a wellbore is improved through addition of a polyalcohol to the cement.

A carbon fiber-reinforced hydraulic composite material having excellent mechanical strength, workability, and freezing-and-thawing resistance, wherein chopped carbon fibers having a monofilament tensile strength of from 140 kg/mm.sup.2 to 270 kg/mm.sup.2, and a monofilament diameter of from 15 .mu.m...     

Disclosed is a mortar.concrete composition comprising a polymer emulsion, a portland cement material and an aggregate, which is characterized in that the polymer emulsion is one prepared by neutralizing a seed polymer with an acid or a salt or by quaternizing it with a quaternizing agent, the surfaces...     

The present invention provides a refractory coating composition comprising: (i) 100 parts by weight of a hydraulic cement, (ii) 3 to 50 parts by weight of a re-emulsion type powdery resin, (iii) 50 to 600 parts by weight of a mixture of 15 to 85% by weight of aluminum hydroxide powder and 85 to 15% by...     

Cement compositions containing fly ash having a carbon content are given satisfactory air entrainment by including a water soluble C8 fatty acid salt.

There is disclosed a softy mud solidifying agent which comprises cement, and at least two members selected from the group consisting of pozzolanic substances, inorganic compounds and organic compounds. The solidifying agent is capable of solidifying dredged earth, sand, softy mud, etc. in such a manner...     

A chloride-free admixture for use as a cold weather (e.g., 13.degree. F. to 40.degree. F.) concrete set accelerator. The admixtures comprise; 1) at least one soluble inorganic salt having freezing point depressant properties, 2) at least one water reducing dispersant, e.g., superplasticizer, 3) at least...     

A low shrinkage cement composition containing at least one compound having the formula: ROH wherein R is an alkyl group having about 4 to 6 carbon atoms or a cycloalkyl group having about 5 to 6 carbon atoms.

A cement admixture comprising a polymer latex and a water reducing agent as effective components, wherein the polymer latex comprises a copolymer of monomers comprising ethylene, vinyl acetate and an acrylic ester, and an emulsion stabilizer, said emulsion stabilizer being a surfactant.

A surfactant is added to a cement containing a polymer fluid loss additive, to synergistically reduce fluid loss from the cement before it hardens.

A cement admixture is disclosed which is capable of inhibiting slump loss without set retardation to hydraulic cement compositions. The admixture is composed of a mixture comprising a copolymer of maleic anhydride and an oxyalkylene containing monomer, lignosulfonic acid or its salts and an anionic surfactant.

Cement and aggregates are mixed with each other by the use of a dispersant to the effect of water reduction and prevention of slump loss, the dispersant comprising (1) (I), (IIa), and an amine reaction terminator of (IIb), (IIc), (IVg) and/or (IVh); (2) (I), (IIb) and/or (IIc) and (IIIe) and/or (IIIf);...     

A surfactant is added to a cement containing a polymer fluid loss additive, to synergistically reduce fluid loss from the cement before it hardens.

A fiber-hydratable cement composition comprising a uniform dispersion of from 0.0001 to 10 volume percent interground fiber in hydratable cement powder is prepared by introducing fiber precursors and cement clinker to a grinding mill and grinding the mixture until the clinker has been reduced to a fine...     

Disclosed herein is a method for adjusting the consistency of a concrete mix by adding a water-absorbing polymeric material or a thickening agent of carboxymethylcellulose to a fresh concrete mix.

The invention relates to shaped solid articles manufactured with a hydraulically setting composition comprising water, hydraulic binders and reinforcing fibres and moreover process fibres in an amount of 0-10 wt % with respect to total dry mix and fillers in an amount of 0-50 wt % with respect to total...     

The invention relates to mineral building materials which contain binders, optionally aggregates and at least one additive, characterized in that the additives used are compounds which are condensation products of substituted or unsubstituted diphenyl sulphones, formaldehyde and compounds from the group...     

A concrete composition which has superior fluidity and filling property and from which a concrete structure having high quality and durability and being excellent in resistance to freezing and thawing can be made without compaction by vibration. The composition comprises cement, water, aggregate, at...     

A process for improving the rebound properties of sprayed concrete comprises the inclusion therein of micro-silica which has been pretreated with from 2 to 25% by weight thereof of a liquid selected from water, an alkanolamine, a polyol and an aqueous solution of at least one concrete additive, an alkanolamine,...     

A thin protective coating for foam surfaced objects achieving high compression and impact strengths without the need of water curing.

Cement admixture compositions formed from alkenyl ether/maleic anhydride copolymers having specific molecular structures have been found to impart a high degree of slump loss over a sustained period of time while not causing any significant set retardation of the treated cement based composition.

A superplasticizing additive for concrete and other cementitious mixes with high retention of workability (low "slump loss") and low air-entraining effect, is made by terpolymers of a) (meth)acrylic acid and its salts, b)polyethyleneglycolmonomethylether-(meth)acrylate and c) polypropyleneglycol-di(meth)acrylate.

Moderate strength cement plugs and viscous pills may be formed by adding slag cement in both conventional particle size and microfine particle sizes to oil-based drilling fluids which contain water as the internal phase of an oil-water emulsion. The water may be present as a calcium chloride brine. Quantities...     

The present invention relates to the use of .alpha., .beta.-amino alcohols as a cement admixture to inhibit drying shrinkage of resultant cement compositions.

A method for mixing cement with water is provided. Dry cement is first slurried in oil. The slurry is easily metered and mixed with water to obtain a cement/water/oil slurry having the desired density. Cement/water/oil slurries thus produced can be used in all applications and have properties, when cured,...     

Rubber-crumb-reinforced cement-concrete structures (such as mortar (0), cement board (30), concrete masonry units (40), and concrete pipe (50)) provide resistance to cracking, increase resistance to acid rain, lower weight, improve shock wave absorption, lower heat conductivity and improve the acoustical...     

Lightweight concrete roof tiles are produced by extruding a latex/cement/lightweight aggregates/water mix in a prescribed sequence. The composition comprises: (a) 45-65 parts by weight of an acrylic latex emulsion; (b) 130-180 parts by weight of a cement; (c) 360-400 parts by weight of expanded shale...     

An additive to cement based materials to render the materials self-leveling upon being mixed with water and applied as a coating upon a floor substrate. The additive comprises a formaldehyde based resin, preferably melamine formaldehyde, and a water retention agent, preferably xanthan gum alone, hydroxyethyl...     

A concrete mortar is formed by mixing together sand, cement, water and a sewage sludge ash. A foam is added to the mortar to form a foamed concrete composition.

The invention relates to a cement composition containing a shrinkage reducing amount of an alkyl ether derivative of an aliphatic polyhydroxy compound of the formula: Q--[(A).sub.n --OR].sub.x wherein Q is a C.sub.3 -C.sub.12 aliphatic hydrocarbon group, R is hydrogen or C.sub.1 -C.sub.10 alkyl, at least...     

The storage and processing times of sprayed concrete can be significantly extended by the addition of a retarder, a chemical compound which is capable of chelating with calcium ions. Preferred retarders are phosphonic acid derivatives which have at least one amino and/or hydroxyl group. The retarder...     

Compositions and methods relating to cementitious compositions are provided. The use of a glucoheptonate in the alpha form to prolong the workability of cementitious compositions is provided. The alpha form of glucoheptonate (found to have properties superior to the beta form when used to retard the...     

A dry, agglomerated cement material, a method of preparing the dry, agglomerated cement material, a method of cementing, and an apparatus for agglomerating particulate materials. The dry, agglomerated cement material comprises a plurality of particles of a cement bonded together by a water-soluble binder...     

Concrete compositions are provided which contain particulate rubber, preferably recycled rubber from such sources as automobile tires, in amounts between about 0.05 and about 20 percent by weight of the concrete composition. The concrete compositions further contain portland cement, water, and an aggregate...     

The present invention provides improved cementitious compositions which can include drilling fluid as a component thereof and methods of cementing wells utilizing such compositions. The compositions are basically comprised of a cementitious material, water, a hardenable resinous material and optionally,...     

A lightweight cementitious composition comprising a dry mixture of a hydraulic cement component and a lightweight aggregate component of about 75 ppcf or less and a process involving mixing with water to produce a slurry containing at least 4 volume percent entrained air and which is easily workable...     

A weather resistant soil cement with an open pore structure for resisting freeze-thaw damage is formed of cement, fly ash, Free aggregates, water, and an aqueous foamed surfactant, and other application specific additives. The material is uniquely suited for using indigenous soils, mill tailings, or...     

A process for utilizing waste by combining of the waste with a mineral based solid material forming an additive. This additive is included as an ingredient in the manufacture of Portland cement with the additive being added to the cement clinker after heat treating of the raw material constituents producing...     

A Low Heat High Performance Concrete (LHHPC) composition having a very low cement content and high W/CM ratio offers high strengths, low heat of hydration, excellent volumetric stability, low chloride permeability and low pH. To reduce the cement content while maintaining high performance, silica fume...     

A cementitious composition comprising (A) 10-30 parts cementitious material; (B) 50-80 parts fly ash weight; and (C) 1.5-8 parts hydroxycarboxylic acid and/or salt thereof.

A solidified waste is formed from a difficult-to-compact hydraulic cement slurry for use in the disposal of hazardous waste. The slurry contains inorganic non-compactible hydraulic cement particles, a concrete superplasticizer compound, water, and filler particles containing radionuclide and/or toxic...     

A cementitious composition comprising (a) a cementitious material; (b) a fly ash which has a calcium oxide content of from 15-45% by weight; (c) a hydroxycarboxylic acid; and (d) a water-soluble source of alkali metal ions. The compositions are useful as concretes, grouts and mortars.

A cement admixture composed of a low molecular weight oxyalkylene compound and a comb polymer having carboxylic acid groups and oxyalkylene units therein.

The invention relates to a cement composition containing a water reducing amount of the product formed by reaction of polyvinyl alcohol and an hydroxyaldehyde such as 4-hydroxybutanal.

The present invention provides improved cementitious compositions which can include drilling fluid as a component thereof and methods of cementing wells utilizing such compositions. The compositions are basically comprised of a cementitious material, water, a hardenable resinous material and optionally,...     

A cementitious material, such as concrete, contains carriers having within them an agent for improving the physical properties of the cementitious material. The agent is released from the carriers into the cementitious material at a desired time after setting by the action of an external stimulus.

A cement composition consists essentially of (a) from 50% to 97% by weight (calculated on the total composition) of a Portland cement clinker, the sulfur content of which is from 0.5% to 10% by weight expressed as SO.sub.3 and the fluorine content of which is from 0.13% to 1.00% by weight expressed as...     

The present invention provides methods of cementing the junction of multi-lateral wells whereby the set cement can withstand impacts and shocks without shattering. A cement slurry composition which sets into a high strength impact resistant solid mass is utilized comprised of a styrene/butadiene aqueous...     

The present invention is directed to concrete compositions prepared using firm aqueous gels (aquagels) as all or part of the aggregate in a concrete mix. The concrete sets around the aquagels in the initial set stage. Because the aquagels maintain the pore structure of the concrete while it sets, a concrete...     

Disclosed herein is a met,hod for adjusting the consistency of concrete mix by adding an water-absorbing polymeric material or a thickening agent of carboxymethylcellulose to a fresh concrete mix.

A process for modifying the slump of a concrete or mortar by the addition at different times of a water-soluble poly(alkylene oxide) and a .beta.-naphthalene sulphonate-formaldehyde condensate, a plasticizer or superplasticizer which is selected from lignosulphonates, melamine sulphonate formaldehyde...     

A cement admixture composed of a mixture of certain lower alkyl ether oxyalkylene adducts with certain higher alkylene diols to provide cement compositions of mortar and concrete which inhibit drying shrinkage while permitting substantial air entrainment and enhanced compressive strength.

A method of controlling the hydration of a cementitious composition comprising the steps of: i) providing a cementitious composition containing an amount of a neutralized salt of an alpha-monohydroxy carboxylic acid effective to retard the cementitious composition, said carboxylic acid containing two...     

Self-repairing, fiber reinforced matrix materials include a matrix material including inorganic as well as organic matrices. Disposed within the matrix are hollow fibers having a selectively releasable modifying agent contained therein. The hollow fibers may be inorganic or organic and of any desired...     

The present invention relates to a quick-hardening hydraulic bonding agent consisting of calcium silicate cement, particularly Portland cement, as well as additives and/or common admixtures which is characterized by a content of: 94.70 to 99.79% in weight of calcium silicate cement; 0.01 to 2.0% in weight...     

An inorganic hardening composition contains 100 parts by weight of an alkaline earth metal oxide, and 5 to 80 parts by weight of an organic carbonic acid compound.

The present invention is directed to a hydraulic composition comprising (a) a water soluble polymer, (b) a superplasticizer which is a copolymer obtained by polymerizing a monomer (C-1) represented by the following Formula (1) with at least one monomer (C-2) selected from the compounds represented by...     

A grouting material which is self-dispersing when brought into contact with a volume of water containing liquor or slurry and is settable to a solid mass after such dispersion, the material being in the form of self-dispersing granules or pellets and comprising a blend of component (A): a cementive constituent...     

An admixture for concrete comprising, as an essential component, a copolymer prepared by copolymerizing (a) a polyalkylene glycol monoester monomer having 110 to 300 mols of an oxyalkylene group(s) each having 2 to 3 carbon atoms, with (b) at least one monomer selected from among acrylic monomers, unsaturated...     

A cement pumpability-enhancing additive which comprises polyethylene glycol and diethylene glycol monobutyl ether and/or a derivative thereof, and optionally polysaccharide. The additive is especially useful for high-strength, high-flow concretes for use in construction.

The hardenable mortar composition consists of a bonding agent component including a hydraulic bonding agent, such as cement, gypsum or mortar, and a paste-forming agent consisting of a liquid solvent inert with respect to the hydraulic bonding agent, and an aqueous component kept separate from the bonding...     

The fluidity characteristics of cementitious compositions may be rapidly altered by the addition thereto of an aqueous dispersion of at least one comb polymer which comprises carboxylic moieties. The invention works especially well when the polymer is combined with an accelerator which is at least one...     

A cementitious material in powder form comprising cement, also comprises sufficient of a granulated hydrophobing additive, which comprises from 5 to 15 parts by weight of an organopolysiloxane component, from 10 to 40 parts by weight of a water-soluble or water-dispersible binder and from 50 to 80 parts...     

A cellular drainage structure is formed of a predetermined volume of a settable, water permeable, cellular concrete product. A concrete mix is formed of a uniformly graded aggregate in the size range from 1/16 inch to two inches and in a quantity corresponding to the predetermined volume; a cementitious...     

An ultrafine cementitious grout having a particle size 90% of which are less than 6 .mu.m in diameter and an average size of about 2.5 .mu.m or less, and preferably 90% of which are less than 5 .mu.m in diameter and an average size of about 2 .mu.m or less containing Portland cement, pumice as a pozzolanic...     

Cement admixtures contain an alkali metal carbonate as component (a) and a mono- or di-carboxylate acid or alkali metal salt thereof or an alkali metal salt of a tricarboxylic acid as component (b).

A system is provided including smart fibers which are employed to deliver agents or components to a matrix before or during cure to affect matrix cure or shaping reactions and final cured structures. The delivered agents may be reactants or catalysts to initiate or modify curing, or other agents such...     

A method for producing cement useful for preparing pastes, mortars, concretes and other cement-based materials, having a high workability with reduced water content, high strength and density, and a rapid development of strength, which method includes a mechanicochemical treatment of cement. The method...     

A water-borne polyurethane modified cement composition is prepared from a dispersion of a water-dispersible polyurethane, a cross-linking agent, which is a polycarbodimide having N.dbd.C.dbd.N functional groups, and cement. Optionally, a water-reducing agent, and a surfactant can be added. The modified...     

Drainage concrete having a void volume of from 10 to 35% by volume and methods for its production and use. The drainage concrete comprising a) a hydraulic binder selected from the group consisting of cements, b) a polymeric binder comprising an anionic styrene/(meth)acrylate copolymer, and c) aggregates...     

The invention concerns insulating mortar which displays very good heat-insulating properties. It contains at least 70 vol. %, preferably at least 80 vol. %, in particular at least 85 vol. %, recycled, comminuted hard polyurethane, the remainder consisting of cement and optionally additives as well as...     

A method for coating a substrate with a cementitious composition by spraying, comprising the addition to the initial cementitious mix one of a .beta.-naphthalene sulphonate-formaldehyde condensate and a water-soluble poly(alkylene oxide) of molecular weight from 100,000-8,000,000, the other being added...     

A concrete admixture is provided, which is effective in imparting fluidity to a hydraulic composition such as cement paste, mortar or concrete, particularly in maintaining the fluidity of the composition and which hardly retards the hardening property of the composition. The concrete admixture comprises...     

This development produces a rapid hardening hydraulic cement, (RHHC) composite, which has less free lime to develop calcium hydroxide, and an additive, which has three components. One--a pozzolan, to combine with the lime left in the cement; Two--a plasticizer for workability, and Three--a retarder to...     

A cement composition excelling in the slump retaining property which comprises at least cement admixture comprising as a main ingredient thereof (I) a copolymer (A) of short-chain polyalkylene glycol (meth)acrylate (a), a long-chain polyalkylene glycol (meth)acrylate (b), a carboxylic acid monomer (c),...     

A cement admixture comprised of a mixture of certain alkyl ether oxyalkylene adducts with certain oxyalkylene glycols to provide cement compositions of mortar and concrete which inhibit drying shrinkage while permitting substantial air entrainment and enhanced compressive strength.

A composition suitable for adding to water to produce a water-resistant hydraulic solid which composition comprises components (a), (b) and (c) as follows: (a) calcium sulphate hemihydrate; (b) portland cement; (c) calcined clay having a pozzolanic activity; wherein the percentages by weight of components...     

An ultrafine cementitious grout in three particle grades containing Portland cement, pumice as a pozzolanic material and superplasticizer in the amounts of about 30 wt. % to about 70 wt. % Portland cement; from about 30 wt. % to about 70 wt. % pumice containing at least 70% amorphous silicon dioxide;...     

Self-repairing, fiber reinforced matrix materials include a matrix material including inorganic as well as organic matrices. Disposed within the matrix are hollow fibers having a selectively releasable modifying agent contained therein. The hollow fibers may be inorganic or organic and of any desired...