EP0879216A1 - Composition de ciment - Google Patents

Composition de ciment

Info

Publication number
EP0879216A1
EP0879216A1 EP97945655A EP97945655A EP0879216A1 EP 0879216 A1 EP0879216 A1 EP 0879216A1 EP 97945655 A EP97945655 A EP 97945655A EP 97945655 A EP97945655 A EP 97945655A EP 0879216 A1 EP0879216 A1 EP 0879216A1
Authority
EP
European Patent Office
Prior art keywords
weight
cement
cement composition
composition according
synthetic
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
EP97945655A
Other languages
German (de)
English (en)
Inventor
Alfred Edlinger
Juraj Gebauer
Horst Wolter
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Holcim Ltd
Original Assignee
Holderbank Financiere Glarus AG
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 Holderbank Financiere Glarus AG filed Critical Holderbank Financiere Glarus AG
Publication of EP0879216A1 publication Critical patent/EP0879216A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
    • C04B24/16—Sulfur-containing compounds
    • 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
    • C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
    • 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
    • C04B7/00—Hydraulic cements
    • C04B7/12—Natural pozzuolanas; Natural pozzuolana cements; Artificial pozzuolanas or artificial pozzuolana cements other than those obtained from waste or combustion residues, e.g. burned clay; Treating inorganic materials to improve their pozzuolanic characteristics
    • C04B7/13—Mixtures thereof with inorganic cementitious materials, e.g. Portland cements
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/91—Use of waste materials as fillers for mortars or concrete
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S106/00—Compositions: coating or plastic
    • Y10S106/01—Fly ash

Definitions

  • the invention relates to a cement composition containing a) 10 to 35% by weight of cement, in particular Portland cement b) 65 to 90% by weight of a synthetic pozzolana, which is obtained by at least partial reduction from combustion residues with an SiO 2 / CaO ratio> 1
  • a synthetic pozzolana which is obtained by at least partial reduction from combustion residues with an SiO 2 / CaO ratio> 1
  • waste incineration slag was obtained and contains alkali oxides (Na 2 0 and K0) in amounts of more than 1.5% by weight
  • an activator for reducing the positive surface potential of the synthetic puzzolane such as, for example, anionic or anionic surfactants, in particular Sulfonates.
  • cement compositions in which, in addition to cement, and in particular Portland cement, more or less large proportions of extenders or fillers are known. It has also been proposed to use cement together with natural puzzolanes or synthetic pozzolans as well as carbonates as extenders, with most of these extenders or fillers having restrictions only because of the desired strength values. In the case of individual mixtures of this type, segregation can occur through sedimentation, which applies in particular to fly ash, sand or blast furnace slag. The risk of segregation due to sedimentation exists particularly in the case of low surface charges, puzzolans, fly ash, microsilica and blast furnace slag generally having only a small to significantly negative surface charge.
  • DE-Al 31 05 054 describes mixtures for the production of concrete containing coarse and / or fine-grained aggregates, containing 70 to 35% by weight of cement and 30 to 65% by weight of latent hydraulic substances, and 0.05 to 1 wt .-% of a dispersant, such as lignin sulfonates, have become known. With increasing amounts of synthetic pozzolans, decreasing strength values were measured in DE-Al 31 05 054.
  • Synthetic pozzolans and in particular those obtained by at least partial reduction from combustion residues with an SiO 2 / CaO ratio> 1, such as waste incineration slags, and containing alkali oxides in quantities of more than 1.5% by weight are distinguished by a positive surface charge.
  • the addition of such synthetic pozzolans has therefore usually not led to an improvement in the strength properties, in particular the early strength. Due to agglomerate formation, the mixed cement also has poor processability. As expected, such cement mixes fell far short of the early strength values for Portland cement or cement compositions with other extenders or fillers.
  • cement compositions which a) 10 to 35% by weight of cement, in particular Portland cement b) 65 to 90% by weight of a synthetic pozzolana, which are obtained by at least partial reduction from combustion residues with an SiO 2 / CaO Ratio> 1, such as waste incineration slag obtained and containing alkali oxides (Na 2 0 and K 2 0) in quantities of more than 1.5% by weight, can be brought to values in their early strength values which correspond to the best known standard cement are not only on a par but are even superior if an activator for reducing the positive surface potential of the synthetic puzzolane, such as anionic or anionic surfactants, is also added.
  • an activator for reducing the positive surface potential of the synthetic puzzolane such as anionic or anionic surfactants
  • the high alkali oxide content like it is observed in particular in acidic slags, leads to a surface charge by sodium and potassium ions, the pozzolanic hydration requiring a relatively high density or small particle spacing of the material. Due to the positive surface charge, the particles are repelled without the activators and thus to a lower particle density, which prevents or hinders hydration and thus a contribution to increasing strength. These surface charges can now be compensated for by the activators mentioned, as a result of which the pozzolanic particles no longer repel one another and a higher density and overall better hydration is made possible. Even with relatively high proportions of such slags or synthetic pozzolans in the cement composition, excellent early strength values and outstanding final strength values could be achieved.
  • the cement composition contains activators in amounts of 1 to 3% by weight.
  • pozzolans can preferably be contained in an amount of 65 to 70% by weight, surprisingly, despite this high amount of pozzolans, outstanding strength properties have been found.
  • activator from the group of the organic sulfonates for example lignin sulfonate or naphthalene sulfonate, can be added in amounts of 1.0 to 2.0% by weight, preferably 1.5% by weight.
  • a particularly high final strength can be achieved if, as in a preferred development, the puzzolan is ground to a fineness of 3000 to 6000 cm 2 / g.
  • the anionic or anionic surfactants can be added during the manufacture of the cement composition. Alternatively, it can be carried out in a particularly simple manner in such a way that the anion-active or anionic surfactants are added together with water during the production of the concrete or mortar.
  • the effect of the activators is particularly evident in the case of synthetic pozzolans with a high alkali oxide content, preference being given to using synthetic pozzolans whose Na 2 0 and K 2 0 content is selected to be greater than 2% by weight.
  • the laboratory cement LZ1 (column II) consisted of 60% by weight of the reference cement, to which 40% by weight limestone was ground.
  • the result of the extender here is that, with good early strengths, the final strength remains significantly lower.
  • the laboratory cement LZ2 (column III) consisted of 30% by weight of the standard cement listed in the first column and 70% by weight of a pozzolana slag, which was obtained from waste incineration slag by partial reduction.
  • the puzzolan selected was added in a total amount of 70% by weight and had an SiO 2 / CaO ratio> 1 and alkali oxides in amounts of more than 1.5% by weight. The values that can be achieved in this way show that the early strength decreases significantly when such pozzolana slags are added.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Combustion & Propulsion (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)

Abstract

Composition de ciment qui contient (a) de 10 à 35 % en poids de ciment, en particulier de ciment portland, (b) de 65 à 90 % en poids de pouzzolane synthétique, obtenue par réduction au moins partielle de résidus de combustion présentant un rapport SiO2/CaO supérieur à 1, comme par exemple des scories d'incinération d'ordures, et contenant des oxydes alcalins (Na2O et K2O) dans des quantités supérieures à 1,5 % en poids, et (c) un activateur destiné à abaisser le potentiel de surface positif de la pouzzolane synthétique, comme par exemple des tensioactifs anioniques ou actifs anioniques, en particulier des sulfonates.
EP97945655A 1996-11-29 1997-11-21 Composition de ciment Withdrawn EP0879216A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
AT2082/96 1996-11-29
AT208296 1996-11-29
PCT/AT1997/000256 WO1998023550A1 (fr) 1996-11-29 1997-11-21 Composition de ciment

Publications (1)

Publication Number Publication Date
EP0879216A1 true EP0879216A1 (fr) 1998-11-25

Family

ID=3527377

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97945655A Withdrawn EP0879216A1 (fr) 1996-11-29 1997-11-21 Composition de ciment

Country Status (9)

Country Link
US (1) US6036768A (fr)
EP (1) EP0879216A1 (fr)
JP (1) JP2000504301A (fr)
CA (1) CA2244259A1 (fr)
CZ (1) CZ268598A3 (fr)
HU (1) HUP9902284A2 (fr)
NO (1) NO983479L (fr)
WO (1) WO1998023550A1 (fr)
ZA (1) ZA9710609B (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7442248B2 (en) * 2003-11-18 2008-10-28 Research Incubator, Ltd. Cementitious composition
US7156174B2 (en) * 2004-01-30 2007-01-02 Halliburton Energy Services, Inc. Contained micro-particles for use in well bore operations
US7341105B2 (en) * 2006-06-20 2008-03-11 Holcim (Us) Inc. Cementitious compositions for oil well cementing applications
US7799128B2 (en) * 2008-10-10 2010-09-21 Roman Cement, Llc High early strength pozzolan cement blends
FR2943662B1 (fr) 2009-03-24 2015-01-16 Lafarge Sa Beton a faible teneur en clinker
US9169159B2 (en) 2013-03-15 2015-10-27 Jerry Setliff Cementitious composition
CN112940188B (zh) * 2021-02-25 2022-04-29 深圳市台钜电工有限公司 用于数据线的抗弯折橡胶材料及其制备方法

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU654567A1 (ru) * 1977-12-13 1979-03-30 Государственный Всесоюзный Научно-Исследовательский Институт Цемента Добавка в сырьевой цементный шлам
GR68405B (fr) * 1979-05-31 1981-12-29 Flowcon Oy
DE3105054A1 (de) * 1980-02-14 1982-02-04 FLH-Versicherungsagentur GmbH, 7000 Stuttgart Mischung und verfahren zu ihrer herstellung
DE3412357A1 (de) * 1984-04-03 1985-10-10 Klöckner-Humboldt-Deutz AG, 5000 Köln Hydraulisch haertbare, anorganische bindemittelzusammensetzung
DE3437680C2 (de) * 1984-10-15 1996-04-11 Tubag Trass Zement Stein Bindemittel für Restaurierungsmörtel und dessen Verwendung
CA2110658A1 (fr) * 1992-12-16 1994-06-17 Theodor A. Burge Additif thixotrope accelerant le durcissement utilise pour des melanges contenant un liant hydraulique, procede utilisant l'additif, appareil pour la preparation des melanges contenant un liant hydraulique et l'additif
US5346012A (en) * 1993-02-01 1994-09-13 Halliburton Company Fine particle size cement compositions and methods
JPH07124535A (ja) * 1993-11-02 1995-05-16 Yonemi Sano 燃焼灰の硬化凝結剤、及び建築材の製造方法
FR2714316B1 (fr) * 1993-12-29 1996-03-15 3F Procédé de traitement des cendres de déchets toxiques par incorporation dans un béton avec lequel on forme des blocs que l'on stocke.

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9823550A1 *

Also Published As

Publication number Publication date
CA2244259A1 (fr) 1998-06-04
NO983479L (no) 1998-09-25
HUP9902284A2 (hu) 2001-06-28
US6036768A (en) 2000-03-14
WO1998023550A1 (fr) 1998-06-04
JP2000504301A (ja) 2000-04-11
NO983479D0 (no) 1998-07-28
CZ268598A3 (cs) 1999-02-17
ZA9710609B (en) 1998-06-23

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