WO2002083590A3 - Cementitious mixtures - Google Patents

Cementitious mixtures Download PDF

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Publication number
WO2002083590A3
WO2002083590A3 PCT/GB2002/001774 GB0201774W WO02083590A3 WO 2002083590 A3 WO2002083590 A3 WO 2002083590A3 GB 0201774 W GB0201774 W GB 0201774W WO 02083590 A3 WO02083590 A3 WO 02083590A3
Authority
WO
WIPO (PCT)
Prior art keywords
added
mixture
fibres
water
particles
Prior art date
Application number
PCT/GB2002/001774
Other languages
French (fr)
Other versions
WO2002083590A2 (en
Inventor
Bhushan Lal Karihaloo
Sharon Diane Pearl Benson
Farshid Jandaghi Alaee
Original Assignee
Univ Cardiff
Bhushan Lal Karihaloo
Sharon Diane Pearl Benson
Farshid Jandaghi Alaee
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Univ Cardiff, Bhushan Lal Karihaloo, Sharon Diane Pearl Benson, Farshid Jandaghi Alaee filed Critical Univ Cardiff
Priority to GB0324680A priority Critical patent/GB2391010B/en
Priority to AU2002338662A priority patent/AU2002338662A1/en
Publication of WO2002083590A2 publication Critical patent/WO2002083590A2/en
Publication of WO2002083590A3 publication Critical patent/WO2002083590A3/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B07B1/46—Constructional details of screens in general; Cleaning or heating of screens
    • B07B1/4609—Constructional details of screens in general; Cleaning or heating of screens constructional details of screening surfaces or meshes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/50—Mixing liquids with solids
    • B01F23/565—Mixing liquids with solids by introducing liquids in solid material, e.g. to obtain slurries
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/60—Mixing solids with solids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/71—Feed mechanisms
    • B01F35/715—Feeding the components in several steps, e.g. successive steps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B23/00—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects
    • B28B23/0081—Embedding aggregates to obtain particular properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28C5/00—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions
    • B28C5/40—Mixing specially adapted for preparing mixtures containing fibres
    • B28C5/402—Methods
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28C7/00—Controlling the operation of apparatus for producing mixtures of clay or cement with other substances; Supplying or proportioning the ingredients for mixing clay or cement with other substances; Discharging the mixture
    • B28C7/0007—Pretreatment of the ingredients, e.g. by heating, sorting, grading, drying, disintegrating; Preventing generation of dust
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
    • C04B20/0048—Fibrous materials
    • C04B20/0052—Mixtures of fibres of different physical characteristics, e.g. different lengths
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
    • C04B20/0076—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials characterised by the grain distribution
    • C04B20/008—Micro- or nanosized fillers, e.g. micronised fillers with particle size smaller than that of the hydraulic binder
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B22/00—Use of inorganic materials as active ingredients for mortars, concrete or artificial stone, e.g. accelerators or shrinkage compensating agents
    • C04B22/002—Water
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
    • C04B40/0028—Aspects relating to the mixing step of the mortar preparation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F2101/00—Mixing characterised by the nature of the mixed materials or by the application field
    • B01F2101/28—Mixing cement, mortar, clay, plaster or concrete ingredients

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Structural Engineering (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Dispersion Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Nanotechnology (AREA)
  • Inorganic Chemistry (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)

Abstract

A method of producing a cementitious mixture initially comprises thoroughly dry mixing the coarsest constituent of the mixture with the finest: this process is repeated until all of the sand, microsilica and cement has been added. In this manner a very even distribution of the different sized particles is achieved, since the voids between adjacent larger particles are filled with smaller particles and thus the produced concrete has a high strength. Following the dry mixing, water and superplasticiser is added. Less water than is conventionally used is required since the mixture is more densely packed. In order to further strengthen the mixture and to greatly enhance its energy absorption capacity, reinforcing fibres having different lengths may be added prior to adding the water and following mixing of the granular materials. The fibres are added by placing them on an apertured surface which is agitated to cause the fibres to fall through the apertures in a random orientation.
PCT/GB2002/001774 2001-04-18 2002-04-18 Cementitious mixtures WO2002083590A2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB0324680A GB2391010B (en) 2001-04-18 2002-04-18 Cementitious mixtures and a method of production thereof
AU2002338662A AU2002338662A1 (en) 2001-04-18 2002-04-18 Cementitious mixtures

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0109686.6 2001-04-18
GBGB0109686.6A GB0109686D0 (en) 2001-04-18 2001-04-18 Cementitious mixtures

Publications (2)

Publication Number Publication Date
WO2002083590A2 WO2002083590A2 (en) 2002-10-24
WO2002083590A3 true WO2002083590A3 (en) 2003-01-03

Family

ID=9913107

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2002/001774 WO2002083590A2 (en) 2001-04-18 2002-04-18 Cementitious mixtures

Country Status (3)

Country Link
AU (1) AU2002338662A1 (en)
GB (2) GB0109686D0 (en)
WO (1) WO2002083590A2 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7563017B1 (en) * 2002-09-06 2009-07-21 Bracegirdle Paul E Process for mixing congealable materials such as cement, asphalt, and glue with fibers from waste carpet
US6971784B1 (en) * 2002-09-06 2005-12-06 Bracegirdle Paul E Process for producing fiber reinforced hot-mix asphaltic and cementitous structural materials with fiber pellets produced from carpet waste
NO20034964L (en) * 2002-11-08 2004-05-10 Bj Services Co Cement composition suitable for oil and gas wells
US7647970B2 (en) 2002-11-08 2010-01-19 Bj Services Company Self-sealing well cement composition
EP1977873A1 (en) * 2007-04-04 2008-10-08 PRAD Research and Development N.V. Drag reducer for powdery cement compositions
RU2344110C1 (en) * 2007-04-05 2009-01-20 Акционерная компания "АЛРОСА" (Закрытое акционерное общество) Method of concrete mix production
MD4111C1 (en) * 2010-03-26 2012-01-31 Евсей ШАМИС Process for the preparation of building mixture

Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3490585A (en) * 1966-01-21 1970-01-20 Nat Res Dev Process and apparatus for classifying fibres
US3633743A (en) * 1968-05-07 1972-01-11 Nat Res Dev Process and apparatus for classifying fibres
DE2247242A1 (en) * 1972-09-27 1974-03-28 Akzo Gmbh Staple fibre sieve - removing unwanted longer incompletely cut fibres by countersunk perforate plate
DE3627812C1 (en) * 1986-08-16 1987-08-27 Bergwerksverband Gmbh Device for separating and metering lightweight, elongated fibrous material
WO1990013524A1 (en) * 1989-05-01 1990-11-15 Aalborg Portland A/S Shaped article with a cement-bound matrix and method and composition for the preparation thereof
SU1629285A1 (en) * 1988-05-26 1991-02-23 Научно-производственное объединение "Камень и силикаты" Raw mix for preparing light-weight concrete
JPH04149057A (en) * 1990-10-09 1992-05-22 Kubota Corp Production of fiber reinforced cement board
DE19643367A1 (en) * 1996-10-09 1998-04-16 Witega Angewandte Werkstoff Forschung Gemeinnuetzige Gmbh Adlershof Highly insulating light constructional concrete
FR2771406A1 (en) * 1997-11-27 1999-05-28 Bouygues Sa Concrete with metal fibers and a cement matrix
EP1008568A1 (en) * 1998-12-12 2000-06-14 Maxit Holding GmbH Building material containing at least two powdery floury fractions
US6080234A (en) * 1995-01-25 2000-06-27 Lafarge Materiaux De Specialites Composite concrete
FR2801049A1 (en) * 1999-11-16 2001-05-18 Ciments D Obourg Sa DAIRY-BASED ULTRA-HIGH PERFORMANCE CONCRETE COMPOSITION
WO2002016281A1 (en) * 2000-08-21 2002-02-28 Lafarge S.A. Hydraulic binder concrete for making prefabricated tiles, panels and the like

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3490585A (en) * 1966-01-21 1970-01-20 Nat Res Dev Process and apparatus for classifying fibres
US3633743A (en) * 1968-05-07 1972-01-11 Nat Res Dev Process and apparatus for classifying fibres
DE2247242A1 (en) * 1972-09-27 1974-03-28 Akzo Gmbh Staple fibre sieve - removing unwanted longer incompletely cut fibres by countersunk perforate plate
DE3627812C1 (en) * 1986-08-16 1987-08-27 Bergwerksverband Gmbh Device for separating and metering lightweight, elongated fibrous material
SU1629285A1 (en) * 1988-05-26 1991-02-23 Научно-производственное объединение "Камень и силикаты" Raw mix for preparing light-weight concrete
WO1990013524A1 (en) * 1989-05-01 1990-11-15 Aalborg Portland A/S Shaped article with a cement-bound matrix and method and composition for the preparation thereof
JPH04149057A (en) * 1990-10-09 1992-05-22 Kubota Corp Production of fiber reinforced cement board
US6080234A (en) * 1995-01-25 2000-06-27 Lafarge Materiaux De Specialites Composite concrete
DE19643367A1 (en) * 1996-10-09 1998-04-16 Witega Angewandte Werkstoff Forschung Gemeinnuetzige Gmbh Adlershof Highly insulating light constructional concrete
FR2771406A1 (en) * 1997-11-27 1999-05-28 Bouygues Sa Concrete with metal fibers and a cement matrix
EP1008568A1 (en) * 1998-12-12 2000-06-14 Maxit Holding GmbH Building material containing at least two powdery floury fractions
FR2801049A1 (en) * 1999-11-16 2001-05-18 Ciments D Obourg Sa DAIRY-BASED ULTRA-HIGH PERFORMANCE CONCRETE COMPOSITION
WO2002016281A1 (en) * 2000-08-21 2002-02-28 Lafarge S.A. Hydraulic binder concrete for making prefabricated tiles, panels and the like

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
DATABASE WPI Week 199205, Derwent World Patents Index; AN 1992-039163, XP002218444 *
DATABASE WPI Week 199227, Derwent World Patents Index; AN 1992-223359, XP002218443 *
DATABASE WPI Week 199428, Derwent World Patents Index; AN 1994-233119, XP002218442 *

Also Published As

Publication number Publication date
GB2391010A (en) 2004-01-28
AU2002338662A1 (en) 2002-10-28
GB0109686D0 (en) 2001-06-13
GB0324680D0 (en) 2003-11-26
WO2002083590A2 (en) 2002-10-24
GB2391010B (en) 2005-07-13

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