WO2017140435A1 - Amorçage de la prise de ciment par addition d'oxyde de carbone à l'eau de gâchage - Google Patents

Amorçage de la prise de ciment par addition d'oxyde de carbone à l'eau de gâchage Download PDF

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Publication number
WO2017140435A1
WO2017140435A1 PCT/EP2017/025023 EP2017025023W WO2017140435A1 WO 2017140435 A1 WO2017140435 A1 WO 2017140435A1 EP 2017025023 W EP2017025023 W EP 2017025023W WO 2017140435 A1 WO2017140435 A1 WO 2017140435A1
Authority
WO
WIPO (PCT)
Prior art keywords
cement
concrete
carbon dioxide
mixing water
mixing
Prior art date
Application number
PCT/EP2017/025023
Other languages
German (de)
English (en)
Inventor
Ralf Schmand
Original Assignee
Linde Aktiengesellschaft
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 Linde Aktiengesellschaft filed Critical Linde Aktiengesellschaft
Publication of WO2017140435A1 publication Critical patent/WO2017140435A1/fr

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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
    • 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
    • C04B28/18—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 mixtures of the silica-lime type
    • C04B28/186—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 mixtures of the silica-lime type containing formed Ca-silicates before the final hardening step
    • C04B28/188—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 mixtures of the silica-lime type containing formed Ca-silicates before the final hardening step the Ca-silicates being present in the starting mixture
    • 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
    • C04B28/10—Lime cements or magnesium oxide cements
    • 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
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/00017—Aspects relating to the protection of the environment

Definitions

  • the invention relates to a process for producing a fast-curing
  • Such a method comprises the steps of mixing a non-hydraulic cement comprising cement clinker with make-up water and optionally at least one aggregate to a cement suspension or a concrete, the cement clinker being characterized by a limestone content of at most 50% (w / w).
  • Concrete is a versatile and widely used building material commonly produced as a mixture of a binder and an aggregate.
  • cement is used as a binder.
  • water which is typically referred to as make-up water or make-up water, leads to a chemical reaction of the cement (setting), which hardens this and forms a solid building material mixture, the concrete.
  • cements can be divided into two categories: Hydraulic cements, such as Portland cement, bind a large part of the
  • Non-hydraulic cements such as Solidia cement, however, hardly react with the
  • mixing water in which case the mixing water serves only as a solvent of the setting reaction and is not reacted.
  • the cement components react with carbon dioxide.
  • carbon dioxide added to start the setting reaction.
  • a method for producing a fast-curing cement suspension or a fast-curing concrete comprises the step of mixing a non-hydraulic cement comprising cement clinker with make-up water and optionally with at least one aggregate to a cement suspension or a concrete, wherein the cement clinker is characterized by a limestone content of at most 50% (w / w), and wherein the
  • Mixing water contains carbon dioxide.
  • the setting reaction already begins when the cement suspension or the concrete is mixed together.
  • the products produced by the process begin early to build up a certain hardness and achieve dimensional stability.
  • the setting time is significantly reduced.
  • the reject rate can be reduced by demoulding due to vibrations (uneven travel paths).
  • a non-hydraulic cement is in particular a non-hydraulic binder for building materials such as concrete, where the non-hydraulic cement hydraulic cement solidifies and hardens after stirring with water in the presence of carbon dioxide, wherein the water is substantially not bound by the binder.
  • concrete is in particular a mixture which comprises cement, water and in particular an aggregate.
  • the fired component of the cement is called, which causes the addition of water and carbon dioxide, the curing of the cement.
  • the mixing water contains carbon dioxide in a concentration in the range of 0.5 g of carbon dioxide per kg of water to 3.35 g of carbon dioxide per kg of water, in particular at or above the saturation concentration.
  • the mixing water has a temperature in the range of 0 ° C to 10 ° C, preferably 0 ° C to 4 ° C.
  • the solubility of carbon dioxide in water increases with decreasing temperature.
  • the cement clinker has a limestone content (CaO) of 40% (w / w) to 50% (w / w). According to a further embodiment of the invention it is provided that the cement clinker a
  • cement clinker silicates mainly in the form of wollastonite / pseudowollastonite (CaO * Si0 2 ) and / or Rankinit (3CaO * Si0 2 ), that is in particular that the present in the cement clinker silicates to over 50% (w / w) in the form of
  • Wollastonite / pseudo-wollastonite (CaO * Si0 2 ) and / or Rankinit (3CaO * Si0 2 ) are present.
  • the cement clinker at least 50% (w / w) silicates in the form of
  • the at least one aggregate is an aggregate, in particular sand and / or gravel.
  • the cement suspension or the concrete is formed before curing, in particular immediately after mixing the non-hydraulic cement with the mixing water and optionally with the at least one additive to at least one body, in particular to a Paving stone, a concrete design element or a roof tile.
  • the body is formed by extrusion.
  • the body after molding with carbon dioxide, a carbon dioxide-containing gas mixture or a carbon dioxide-containing solution, in particular a carbon dioxide-containing aqueous solution is circulated, in particular in a chamber which is preferably completed.
  • the cement suspension or the concrete is mixed in a limited by a shutter recording.
  • a molding of an at least partially hardened cement slurry or an at least partially hardened concrete is provided, wherein the at least partially hardened cement slurry or the at least partially hardened concrete is produced by the method according to the invention.
  • the molded article of the invention already has a certain hardness immediately after mixing and molding, so that the molded article of the invention can safely be transported to a device for complete curing of the molded article without the molded article breaking or being demoulded.
  • An at least partially hardened cement suspension or an at least partially hardened concrete in the sense of the invention designates a cement suspension or a concrete in which or in which part of the cement clinker used has been converted into calcite and / or silica, in particular quartz (SiO 2 ).
  • the calcite and / or the silica which are formed from the cement clinker, are distributed substantially homogeneously within the molding of the invention.
  • the surface and the core of the molding according to the invention have substantially the same concentrations of calcite formed from the cement clinker or silica resulting from the cement clinker.
  • the shaped body is designed as a paving stone, a concrete design element or roof tiles.
  • Fig. 1 is a schematic representation of an embodiment of the invention.
  • Non-hydraulic cement 11 such as Solidia cement available for example from the company Lafarge cement GmbH, Karsdorf / Unstrut, Germany, is mixed with mixing water 12 and an aggregate 16 as an aggregate, especially sand and / or gravel, and a still liquid or Flowable concrete 13 is created.
  • the non-hydraulic cement 1 1 already have the above-mentioned aggregate 16.
  • the non-hydraulic cement contains cement clinker with a limestone content of about 42% (w / w) to 48% (w / w) and consists mainly of
  • the still liquid, but already solidifying concrete 13 is poured into a mold or casing, in which it solidifies further or completely to form a shaped body 14.
  • the product can also be removed from the mold immediately after molding and only then transferred to the curing process.
  • Preferred moldings 14 are paving stones, concrete design elements or roof tiles.
  • the already solidifying molded body 14 can be additionally spent in a curing chamber, where it is surrounded by carbon dioxide.
  • the moldings 14 produced in this way are characterized by an initially higher hardness so that they can be safely transported already a short time after the preparation of the cement suspension 13 or of the concrete 13. Also, an early demolding can be carried out with a lower reject rate.
  • Aggregate in particular sand and / or gravel

Landscapes

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

Abstract

L'invention concerne un procédé pour produire un ciment sous forme de suspension à prise rapide ou un béton à prise rapide, ledit procédé comprenant pour étape : mélanger un ciment non hydraulique comprenant un clinker de ciment avec de l'eau de gâchage et éventuellement avec au moins un additif pour former du ciment sous forme de suspension ou du béton, le clinker de ciment se caractérisant par une teneur en calcaire d'au plus 50% en poids et l'eau de gâchage contenant du dioxyde de carbone.
PCT/EP2017/025023 2016-02-16 2017-02-07 Amorçage de la prise de ciment par addition d'oxyde de carbone à l'eau de gâchage WO2017140435A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102016001791.0A DE102016001791A1 (de) 2016-02-16 2016-02-16 Initiierung der Zementaushärtung durch Zugabe von Kohlendioxid zum Anmachwasser
DE102016001791.0 2016-02-16

Publications (1)

Publication Number Publication Date
WO2017140435A1 true WO2017140435A1 (fr) 2017-08-24

Family

ID=58185480

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2017/025023 WO2017140435A1 (fr) 2016-02-16 2017-02-07 Amorçage de la prise de ciment par addition d'oxyde de carbone à l'eau de gâchage

Country Status (2)

Country Link
DE (1) DE102016001791A1 (fr)
WO (1) WO2017140435A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020006636A1 (fr) * 2018-07-04 2020-01-09 Crh Group Canada Inc. Procédés et systèmes de séquestration du dioxyde de carbone et compositions de béton associées

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH584666A5 (en) * 1972-07-03 1977-02-15 Durisol Ag Building panels made of wood chips with cement - where carbon dioxide added to mixing water accelerates hardening
JPH06144944A (ja) * 1992-11-12 1994-05-24 Asahi Chem Ind Co Ltd 多孔質珪酸カルシウム水和物の炭酸化処理方法
US20140263683A1 (en) * 2013-03-13 2014-09-18 Jagadeesh Krishnan Composite railroad ties and methods of production and uses thereof
WO2015051243A2 (fr) * 2013-10-04 2015-04-09 Solidia Technologies, Inc. Article à âme alvéolaire et matériaux composites, leurs procédés de production et leurs utilisations
WO2015090533A1 (fr) * 2013-12-18 2015-06-25 Heidelbergcement Ag Procédé pour produire des liants contenant de la wollastonite

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH584666A5 (en) * 1972-07-03 1977-02-15 Durisol Ag Building panels made of wood chips with cement - where carbon dioxide added to mixing water accelerates hardening
JPH06144944A (ja) * 1992-11-12 1994-05-24 Asahi Chem Ind Co Ltd 多孔質珪酸カルシウム水和物の炭酸化処理方法
US20140263683A1 (en) * 2013-03-13 2014-09-18 Jagadeesh Krishnan Composite railroad ties and methods of production and uses thereof
WO2015051243A2 (fr) * 2013-10-04 2015-04-09 Solidia Technologies, Inc. Article à âme alvéolaire et matériaux composites, leurs procédés de production et leurs utilisations
WO2015090533A1 (fr) * 2013-12-18 2015-06-25 Heidelbergcement Ag Procédé pour produire des liants contenant de la wollastonite

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
DATABASE WPI Week 199425, Derwent World Patents Index; AN 1994-206239, XP002770097 *
RICHARD E RIMAN ET AL: "Carbonate Cement and Concrete: A Disruptive Technology For CO 2 Utilization and the Construction Business", 8 November 2013 (2013-11-08), XP055270594, Retrieved from the Internet <URL:http://www3.aiche.org/proceedings/content/Annual-2013/extended-abstracts/P343708.pdf> *
SIPILÄ, J. ET AL: "Carbon dioxide sequestration by mineral carbonation", 1 January 2008, REPORT VT 2008-1, ABO AKADEMIS TRYCKERI, PAGE(S) 1 - 59, ISBN: 978-952-12-2036-4, XP007906702 *

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