| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 61 | HIGH EARLY STRENGTH CEMENT-SCM BLENDS | US14305954 | 2014-06-16 | US20140299023A1 | 2014-10-09 | John M. Guynn; Andrew S. Hansen |
| Hydraulic cements, such as Portland cements and other cements that include substantial quantities of tricalcium silicate (C3S), dicalcium silicate (C2S), tricalcium aluminate (C3A), and/or tetracalcalcium alumino-ferrite (C4AF), are particle size optimized to have increased reactivity compared to cements of similar chemistry and/or decreased water demand compared to cements of similar fineness. Increasing hydraulic cement reactivity increases early strength development and release of reactive calcium hydroxide, both of which enhance SCM replacement and 1-28 day strengths compared to blends of conventional Portland cement and one or more SCMs, such as coal ash, slag or natural pozzolan. Decreasing the water demand can improve strength by decreasing the water-to-cement ratio for a given workability. The narrow PSD cements are well suited for making blended cements, including binary, ternary and quaternary blends. | ||||||
| 62 | Low alkali, non-crystalline, vitreous silica fillers | US12583800 | 2009-08-26 | US07811377B2 | 2010-10-12 | Raymond T. Hemmings; Robert D. Nelson; Philip L. Graves; Bruce J. Cornelius |
| A substantially white powder for use as a filler and/or extender derived from by-products of manufacturing vitreous low alkali, low iron glass fibers, and a method for producing the powder. The filler has very low alkalinity and by virtue of its being essentially free of crystalline silica is non-hazardous to health and therefore safe for consumer-based and industrial-based uses. | ||||||
| 63 | Method of improving material comprising a pozzolanic component | US10507869 | 2003-03-19 | US20050223950A1 | 2005-10-13 | Joseph Jan Biermann; Nicolaas Voogt |
| The invention relates to a method of improving a material comprising a pozzolanic component. According to the invention the material is treated with an aqueous liquid resulting in treated, calcium-depleted material and a calcium-enriched aqueous solution, which are subsequently separated. This provides a material having an increased pozzolanity and/or increased specific surface area | ||||||
| 64 | Dehydroxylated aluminium silicate based material, process and installation for the manufacture thereof | US10644881 | 2003-08-21 | US20050039637A1 | 2005-02-24 | Gael Cadoret |
| The invention concerns a dehydroxylated aluminium silicate-based material exhibiting a faster pozzolanic reactivity, characterized in that the amount of reacted calcium hydroxide measured by the pozzolanic reactivity (PR) after a 3-day cure is at least 50%. In a process and an installation for dehydroxylation treatment of aluminium silicate, particles containing aluminium silicate are exposed to a temperature of at least 500° C. The particles are in the form of a dry powder, and the dry powder (26) is optionally transported in a gas stream (30) at a temperature ranging from 600 to 850° C., for a time which is sufficient to achieve the desired degree of dehydroxylation. The powder may be obtained from a hydrated base paste by reducing the base paste into fragments (23), and by disaggregating the fragments (23) of base paste by mechanical action (at 3) in the presence of a hot gas (24) at a temperature ranging from 500° C. to 800° C., in order to form the dry powder (26). | ||||||
| 65 | Process for producing a blended cement having enhanced cementitious properties capable of combination with class C fly ash | US10095219 | 2002-03-11 | US06733583B2 | 2004-05-11 | Max L. Frailey; John G. Wheeler |
| The present invention provides a method of producing a blended cement capable of meeting ASTM C-595 and C-1157 standards. The blended cement of the present invention contains portland cement clinker, calcium sulfate and volcanic ash. The volcanic ash utilized by the present invention has been subjected to heat in the range of between 800° F. and 1300° F. and contains between 40% and 45% hollow spheres unable to pass #325 sieve. The portland cement clinker, calcium sulfate and volcanic ash are interground to an ultimate blaine fineness of between 350 m2/kg and 500 m2/kg to produce a blended cement capable of subsequent admixing with class C fly ash to produce synergistic effects. Specifically, the addition of class C fly ash to the blended cement containing interground volcanic ash, portland cement clinker, and calcium sulfate is capable of producing an ultimate blended cement exhibiting improved sulfate resistance, improved workability, reduced permeability with regard to chlorides and sulfates, improved resistance to ASR and elimination of delayed ettringite formation. | ||||||
| 66 | Mechanical activation of granitic powders | US09310471 | 1999-05-12 | US06630022B2 | 2003-10-07 | Paul C. Lessard; Michael Havens-Cook |
| A mechanically activated pozzolan prepared from granitic quarry fines. Quarry fines are milled by a high-energy milling process to convert the essentially inert raw granitic fines into a chemically reactive state. When added to a portland cement mortar mixture, mechanically activated fines combined with calcium hydroxide to improve the strength of the cured mortar compared to a similar mixture prepared with raw fines. Mortars prepared with mechanically activated granitic fines typically show strength values comparable to or exceeding similar mortars made using fly ash as a pozzolan. In some instances, the strength of a mortar prepared with mechanically activated granitic quarry fines exceeded a mortar prepared using 100% portland cement as the cementitious component. | ||||||
| 67 | MECHANICAL ACTIVATION GRANITIC POWDERS | US09310471 | 1999-05-12 | US20030131764A1 | 2003-07-17 | PAUL C. LESSARD; MICHAEL HAVENS-COOK |
| A mechanically activated pozzolan prepared from granitic quarry fines. Quarry fines are milled by a high-energy milling process to convert the essentially inert raw granitic fines into a chemically reactive state. When added to a portland cement mortar mixture, mechanically activated fines combined with calcium hydroxide to improve the strength of the cured mortar compared to a similar mixture prepared with raw fines. Mortars prepared with mechanically activated granitic fines typically show strength values comparable to or exceeding similar mortars made using fly ash as a pozzolan. In some instances, the strength of a mortar prepared with mechanically activated granitic quarry fines exceeded a mortar prepared using 100% portland cement as the cementitious component. | ||||||
| 68 | White pozzolan composition and blended cements containing same | US10087064 | 2002-03-01 | US20030047119A1 | 2003-03-13 | Raymond T. Hemmings; Robert D. Nelson; Philip L. Graves; Bruce J. Cornelius |
| A white pozzolan derived from by-products of manufacturing vitreous low alkali, low iron glass fibers, and to the method for producing the white pozzolan. The invention relates as well to cement compositions based on the white pozzolan, such as white and pigmented blended pozzolanic cements of high durability for use in applications such as white or colored architectural concrete, building materials, and manufactured cementitious products. The white pozzolan also functions as a high performance pozzolan with grey cement. | ||||||
| 69 | Cementitious systems and methods of making the same | US789019 | 1997-01-27 | US5788762A | 1998-08-04 | Gregory S. Barger; Eric R. Hansen |
| Novel cementitious systems comprised of gypsum, calcined clay, and clinker consisting essentially of hydraulic calcium silicates are disclosed which have the following properties: (1) a water demand of less than about 33% nc; (2) one-day strengths of at least about 1000 psi; and (3) low alkali functionality. By increasing the amount of calcined clay, the resulting cementitious system will sequentially gain the following properties: (1) alkali non-reactiveness; (2) alkali resistance; and (3) low chloride permeability. Novel methods of preparing the novel cementitious systems of this invention are also disclosed. The novel methods not only reduce production costs by decreasing fuel and raw material consumption, but they also allow the cement producer to proactively address significant environmental concerns related to the manufacturing process. | ||||||
| 70 | Cementitious systems and novel methods of making the same | US334820 | 1994-11-04 | US5626665A | 1997-05-06 | Gregory S. Barger; Eric R. Hansen |
| Novel cementitious systems comprised of gypsum, calcined clay, and clinker consisting essentially of hydraulic calcium silicates are disclosed which have the following properties: (1) a water demand of less than about 33% nc; (2) one-day strengths of at least about 1000 psi; and (3) low alkali functionality. By increasing the amount of calcined clay, the resulting cementitious system will sequentially gain the following properties: (1) alkali non-reactiveness; (2) alkali resistance; and (3) low chloride permeability. Novel methods of preparing the novel cementitious systems of this invention are also disclosed. The novel methods not only reduce production costs by decreasing fuel and raw material consumption, but they also allow the cement producer to proactively address significant environmental concerns related to the manufacturing process. | ||||||
| 71 | Processed silica as a natural pozzolan for use as a cementitious component in concrete and concrete products | US438181 | 1995-05-09 | US5554352A | 1996-09-10 | Stephen B. Jaques; Richard D. Stehly; Peter B. Dunning |
| A pozzolan for use in concrete products which is a silica by-product in the acid treatment of silica-containing ore is described. The pozzolan contains over 75% by weight amorphous silica and provides an increase in the early strength of concrete in comparison to traditional pozzolans as well as minimizing alkali-silica reactions due to the presence of less impurities. | ||||||
| 72 | Process for treating fly ash and bottom ash and the resulting product | US137730 | 1993-10-21 | US5362319A | 1994-11-08 | William B. Johnson |
| The invention provides a novel, environmentally stabilized formed product and to a method of producing a hard, dry, e.g., agglomerated or formed, environmentally stabilized product useful as a construction material, e.g., as pellets, panels, bricks, etc. comprising: a) ash such as RDF or coal ash (typically stack scrubber solids or bottom ash obtained from the burning of coal), b) an oxidizer and c) water. The amount of water present is selected to render the product plastic so that it can be molded to the desired shape. The oxidizer is provided in a sufficient amount to oxidize unstable compounds and to convert potassium, calcium or magnesium bisulfite to the sulfate form. Following the addition of the oxidizer, the admixture is exposed to electromagnetic energy, preferably ultraviolet light, to help drive the oxidation reaction to completion. In an optional form of the invention, portland cement, plaster of paris or a minor amount of a cation exchange resin or Zeolite clay is added to the mixture to sequester heavy metals. The admixture is formed or molded into pieces or bodies of the desired shape, such as blocks, slabs, pellets or agglomerates. The resulting pieces harden to form an environmentally stable product at room temperature so that oven baking of the end product is not required. | ||||||
| 73 | Process for preparing hydraulic binding materials of high bonding capacity from glassy pyrogenic rocks | US896338 | 1978-04-13 | US4188233A | 1980-02-12 | Zoltan Juhasz; Gyula Varju |
| There is disclosed a process for preparing hydraulic binding materials having a high bonding capacity, starting from glassy pyrogenic rocks. According to the invention glassy pyrogenic rocks are mechanically activated by grinding. The activation time is 0.5 to 36 hours, preferably 4 to 12 hours, and the mechanical stress applied is higher than in case of the conventional fine grinding. The activated product is thereafter admixed with one or both of lime and cement. | ||||||
| 74 | Pozzolanic materials and method of making same | US24004238 | 1938-11-12 | US2346451A | 1944-04-11 | MARIO PALMIERI; BECK ARNOLD J |
| 75 | Supplementary cementitious materials comprising dredged sediments | US15576991 | 2016-03-18 | US10138164B2 | 2018-11-27 | Joris Dockx; Jos Vandekeybus; Ruben Snellings; Liesbeth Horckmans; Ozlem Cizer; Lucie Vanderwalle; Koen Van Balen |
| A supplementary cementitious material used in combination with an activator such as Portland cement to produce a hydraulic binder. The supplementary cementitious material is based on physico-chemically treated filter cake product extracted from dredged sediments and can partially replace Portland cement clinker in conventional concrete applications with positive effects on sustainability (reduction of CO2 emissions, upcycling of residues). | ||||||
| 76 | HYALOCLASTITE POZZOLAN, HYALOCLASTITE BASED CEMENT, HYALOCLASTITE BASED CONCRETE AND METHOD OF MAKING AND USING SAME | US15882874 | 2018-01-29 | US20180327308A1 | 2018-11-15 | Romeo Ilarian Ciuperca |
| The invention comprises a composition comprising hyaloclastite having a volume-based mean particle size of less than or equal to 40 μm. The invention also comprises a cementitious material comprising a hydraulic cement and hyaloclastite, wherein the hyaloclastite has a volume-based mean particle size of less than or equal to approximately 40 μm. The invention further comprises a cementitious-based material comprising aggregate, a cementitious material comprising a hydraulic cement and hyaloclastite, wherein the hyaloclastite has a volume-based mean particle size of less than or equal to approximately 40 μm and water sufficient to hydrate the cementitious material. A method of using the composition of the present invention is also disclosed. | ||||||
| 77 | Method for refining of in power plants produced coal ash and coal containing ashes produced in other combustion processings | US15553463 | 2015-02-26 | US10022759B2 | 2018-07-17 | Risto Mannonen; Jouko Niemi |
| A method for industrial refining of coal ash created in power plants and carbonaceous ashes produced in other combustion processes by separating coal from said ashes and returning it to use and by recovering a substantially coal-free ash fraction obtained in the refining. In the method, coal ash and at least one ash fraction created by gasification technique in combustion plants are carefully proportioned in relation to one another and formed into a slurry mixture by means of an efficient dispersion technique, the slurry being then led to a flotation step, where a fraction rich in coal and a siliceous fraction poor in coal and a fraction dissolving in the process water are separated by flotation. The coal ash is arranged to have the highest proportion in the mixture to be taken to flotation, the ashes from combustion plants being dosed into said mixture in an amount that does not cause the maximum amounts of harmful substances to be exceeded in the qualities of the carbonaceous product and the silicate product poor in coal to be obtained. | ||||||
| 78 | METHODS AND COMPOSITIONS FOR CONCRETE PRODUCTION | US15703522 | 2017-09-13 | US20180118622A1 | 2018-05-03 | George Sean Monkman; Kevin Cail; Paul J. Sandberg; Mark MacDonald; Joshua Jeremy Brown; Dean Paul Forgeron |
| The invention provides compositions and methods directed to carbonation of a cement mix during mixing. The carbonation may be in a stationary mixer or a transportable mixer, such as a drum of a ready-mix truck. | ||||||
| 79 | CEMENT FORMULATIONS AND METHODS | US15699961 | 2017-09-08 | US20180065888A1 | 2018-03-08 | James M. DONOVAN; Jason GREISER; David C. MCMURTRY |
| Disclosed are improved compositions, systems, methods and techniques for processing and preparing cement, cement constituents and concrete formulations involving natural pozzolans. In various embodiments, the water demand, compressive strength, set times and workability in concrete incorporating certain natural pozzolans can be improved by blending with calcium carbonate powders, while further improvements can be accomplished if the calcium carbonate is inter-ground with the natural pozzolan to a desired and/or minimum fineness. This addition of calcium carbonate, fly ash, ground granulated blast furnace slag, ground glass and various acids to a natural pozzolan can desirably reduce water requirements and improve the physical performance characteristics of the natural pozzolan and the overall characteristics of the concrete. Various applications may allow for (1) extension of limited fly ash supplies in certain regions, (2) greater replacement of costly Portland cement, and/or (3) significant reductions of greenhouse gases resulting from Portland cement manufacture. | ||||||
| 80 | MODIFICATION OF PROPERTIES OF POZZOLANIC MATERIALS THROUGH BLENDING | US15550722 | 2015-06-29 | US20180037501A1 | 2018-02-08 | John M. Guynn; Andrew S. Hansen |
| Methods for producing a blended pozzolan having one or more characteristics, such as one or more chemical and/or physical characteristic, in an established amount or range from two or more different pozzolans. Two or more pozzolans having different chemical and/or physical characteristics can be blended together and a chemical analyzer used to determine a chemical and/or physical characteristic of the blended pozzolan. Upon determining that the chemical and/or physical characteristic of the blended pozzolan is outside the established amount or range, modifying a blending ratio of the two or more pozzolans to restore the chemical and/or physical characteristic to the established amount or range. | ||||||
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