EP1699745A1 - Additif sec pour liants hydrauliques - Google Patents

Additif sec pour liants hydrauliques

Info

Publication number
EP1699745A1
EP1699745A1 EP04805025A EP04805025A EP1699745A1 EP 1699745 A1 EP1699745 A1 EP 1699745A1 EP 04805025 A EP04805025 A EP 04805025A EP 04805025 A EP04805025 A EP 04805025A EP 1699745 A1 EP1699745 A1 EP 1699745A1
Authority
EP
European Patent Office
Prior art keywords
additive
dry
composition
hydraulically setting
hydraulic
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Withdrawn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
EP04805025A
Other languages
German (de)
English (en)
Inventor
Benedikt Lindlar
André Schiegg
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.)
Sika Technology AG
Original Assignee
Sika Technology 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 Sika Technology AG filed Critical Sika Technology AG
Priority to EP04805025A priority Critical patent/EP1699745A1/fr
Publication of EP1699745A1 publication Critical patent/EP1699745A1/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Withdrawn legal-status Critical Current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
    • C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
    • C04B14/02—Granular materials, e.g. microballoons
    • C04B14/04—Silica-rich materials; Silicates
    • C04B14/047—Zeolites
    • 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
    • C04B20/10—Coating or impregnating
    • 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
    • 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
    • C04B28/04—Portland 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
    • C04B2111/72—Repairing or restoring existing buildings or building materials
    • C04B2111/723—Repairing reinforced 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
    • 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

Definitions

  • the invention relates to dry additives for hydraulic binders.
  • Dry additives for hydraulic binders are sold alone or already mixed in, for example as dry concrete or dry mortar. Such dry mixtures have a relatively good storage stability and stability since mixtures of dry, powdery raw materials do not cause any interactions between the raw materials during the storage period which impair storage stability.
  • liquid raw materials or additives are to be added to the dry mixture, for example by injecting or pouring an additive into the powder mixture, the storage time during which the powder mixture retains its desired properties is drastically reduced.
  • Even carriers that adsorb the liquids on the surface are not always suitable to prevent interactions, but this depends on the properties of the liquid additive.
  • hydrophilic liquids with significant vapor pressure can migrate into the powder mixture and cause undesirable effects. Presentation of the invention
  • the object of the invention is to achieve sufficient storage stability with a dry additive for hydraulic binders of the type mentioned at the outset, even when at least one liquid additive is used. According to the invention, this is achieved by the features of the first claim.
  • the advantages of the dry additive according to the invention are, on the one hand, that the dry additive is storage-stable and easy to dose, and in particular that the hydraulically setting composition formulated therewith has a significantly improved storage stability than a corresponding composition which contains the corresponding liquid additive was added in the liquid state. Another advantage is that only when processing at
  • Fig. 1 A schematic view of a microporous carrier loaded with a liquid additive
  • Microporous molecular sieves in particular zeolites, are therefore suitable as carriers.
  • Zeolites can be produced synthetically or, of course, occur in formerly volcanic areas, where they are mined, for example in Italy.
  • Commercial zeolites have pore diameters which are usually in the range from 3 to 10 angstroms (10 "10 m), preferably between 4 and 8 angstroms, but can also be larger.
  • the microporous carriers are preferably in powder form, in particular with a medium one Grain diameters of less than 100 microns, preferably between 100 and 10 microns, most preferably between 50 and 25 microns.
  • Zeolites are produced in the form of a very fine powder and may be processed into coarser particles with a binder.
  • the hydraulically setting composition can be, for example, a ready-mixed mortar, a repair mortar, a dry mortar or a concrete.
  • This hydraulically setting composition has a storage stability which is significantly improved compared to the same hydraulically setting composition which, instead of the dry additive, is directly mixed with the liquid additive used for the production of the dry additive.
  • a required amount of water is added and the mixture is processed.
  • the amount of water required depends primarily on the water / cement ratio commonly used by a person skilled in the art.
  • the processing and the cement setting reaction make the liquid additive 1 released from the pore structure of the carrier 2 and the additive 1 migrates into the hydraulic binder.
  • the speed of release of the additive is adjusted depending on the type of additive and can also be delayed.
  • the hydraulically setting composition hardens.
  • FIG. 2 schematically shows a hydraulically setting composition with a microporous carrier 2 which is loaded with a liquid additive 1.
  • the additive is a corrosion-inhibiting liquid additive 1.
  • the release is preferably carried out slowly in order to protect the reinforcing bars 4 present in the hydraulically setting composition 3 against corrosion.
  • alkanolamines As corrosion inhibitors e.g. Alkanolamines, alcohols, organic acids, phosphonates can be used.
  • Particularly suitable alkanolamines are ethanolamines or N-alkylated ethanolamines, preferably selected from the group comprising monoethanolamine, diethanolamine, triethanolamine, N-methyldiethanolamine, N, N-dimethylethanolamine and mixtures thereof.
  • Monoethanolamine (MEA) is particularly preferably used.
  • FIG. 3 shows the rehabilitation of a hardened hydraulic composition 3a, for example a concrete, with a hydraulically setting composition 3, for example a mortar.
  • the hardened hydraulic composition 3a to be repaired which is carbonated, contaminated with chloride, brittle, perforated or cracked and / or has reinforcing irons 4 visible at certain points, can be prepared by working on the surface, for example by chiseling or knocking it off with a hammer or similar means in particular until you encounter intact concrete.
  • the hydraulically setting composition is mixed with water and applied to the hardened hydraulic composition 3a.
  • the liquid additive 1 is released, preferably with a delay, migrates into the hydraulic setting composition 3 and then into the hardened hydraulic composition 3a, for example the concrete.
  • the liquid additive 1 present in the carrier 2 is a corrosion inhibitor
  • the additive is drawn onto the reinforcing iron 4, which leads to corrosion protection.
  • the samples were assessed on the basis of the following parameters: -Air content measured analogously to EN 12350-7 (concrete test) -Average measurement after 10 minutes and 15 impacts according to DIN 18555-2 -Processing: Assessment of cohesion and toughness by a specialist -Compressive strength after 28 days curing at 23 ° C and 50% rel. Air humidity according to EN 196-1 - bending tensile strength after 28 days curing at 23 ° C and 50% rel. Air humidity according to EN 196-1 - drying shrinkage after 91 days at 23 ° C and 50% rel. Air humidity according to DIN 52450
  • Table 3 shows the results of this assessment. It is noticeable that the addition of the solid additive (B1-20), in contrast to the addition of the liquid additive (R1 and R2), does not impair the storage stability of the hydraulically setting composition, as can be seen from the comparison with R3. Examples R1 and R2 require a significantly higher proportion of water in order to obtain the same processability, in particular the slump. However, a higher water requirement has an adverse effect the mechanical properties, the shrinkage and thus also the permeability. It was also observed that the strengths and shrinkage values of B1-20 are comparable to the reference R3, namely after or without storage. The references R1 and R2 compared to B1-20 also showed a significantly deteriorated shrinkage and strength values after storage and a greatly increased permeability.

Landscapes

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

Abstract

La présente invention concerne un additif sec pour liants hydrauliques, sa préparation et son utilisation. L'additif solide se caractérise en ce qu'un additif liquide (1) se trouve dans un support microporeux (2). Cela permet la formulation de compositions de liaison hydraulique (3) qui ont une stabilité au stockage significativement supérieure à celle de la composition hydraulique correspondante à laquelle à été mélangé directement l'additif liquide (1). L'invention a également pour objet un procédé pour assainir des compositions hydrauliques durcies telles que du béton, ce qui rend possible la réalisation d'une protection contre la corrosion du fer d'armature dans des compositions hydrauliques déjà durcies.
EP04805025A 2003-12-23 2004-12-23 Additif sec pour liants hydrauliques Withdrawn EP1699745A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP04805025A EP1699745A1 (fr) 2003-12-23 2004-12-23 Additif sec pour liants hydrauliques

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP20030029596 EP1547985A1 (fr) 2003-12-23 2003-12-23 Adjuvant sec pour des liants hydrauliques
EP04805025A EP1699745A1 (fr) 2003-12-23 2004-12-23 Additif sec pour liants hydrauliques
PCT/EP2004/053698 WO2005063647A1 (fr) 2003-12-23 2004-12-23 Additif sec pour liants hydrauliques

Publications (1)

Publication Number Publication Date
EP1699745A1 true EP1699745A1 (fr) 2006-09-13

Family

ID=34530699

Family Applications (2)

Application Number Title Priority Date Filing Date
EP20030029596 Withdrawn EP1547985A1 (fr) 2003-12-23 2003-12-23 Adjuvant sec pour des liants hydrauliques
EP04805025A Withdrawn EP1699745A1 (fr) 2003-12-23 2004-12-23 Additif sec pour liants hydrauliques

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP20030029596 Withdrawn EP1547985A1 (fr) 2003-12-23 2003-12-23 Adjuvant sec pour des liants hydrauliques

Country Status (5)

Country Link
US (1) US20080245261A1 (fr)
EP (2) EP1547985A1 (fr)
JP (1) JP2007515373A (fr)
CN (1) CN1898176A (fr)
WO (1) WO2005063647A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014029658A1 (fr) * 2012-08-21 2014-02-27 Sika Technology Ag Compositions de mortier ou ciment polyvalentes pour des applications de construction
CN106747488B (zh) 2016-11-03 2019-09-27 联合矿产（天津）有限公司 经过稳定化的耐火组合物

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5812222B2 (ja) * 1977-01-31 1983-03-07 三菱重工業株式会社 腐食防止性鉄筋コンクリ−ト
JPS6126545A (ja) * 1984-07-11 1986-02-05 株式会社クボタ 撥水性無機質製品の製造方法
CA1258473A (fr) * 1985-06-10 1989-08-15 Philip J. Martin Prevention de la corrosion dans le ciment hydraulique arme
GB8611942D0 (en) * 1986-05-16 1986-06-25 Precicion Dependability & Qual Preventing steel corrosion
JPH0774087B2 (ja) * 1991-02-13 1995-08-09 富士川建材工業株式会社 無機質硬化物用骨材及びその製造方法
JPH0774089B2 (ja) * 1991-02-13 1995-08-09 富士川建材工業株式会社 モルタル組成物
JP3483572B2 (ja) * 1995-03-01 2004-01-06 エムビーティ・ホールディング・アクチエンゲゼルシャフト 鉄筋コンクリートの腐食阻害法
JPH10167781A (ja) * 1996-12-05 1998-06-23 Railway Technical Res Inst モルタルおよびコンクリートの品質改良用添加材
EP0941975B1 (fr) * 1998-03-09 2002-01-09 Sika AG, vorm. Kaspar Winkler & Co. Ciment d'injection contenant des inhibiteurs de corrosion
US6170575B1 (en) * 1999-01-12 2001-01-09 Halliburton Energy Services, Inc. Cementing methods using dry cementitious materials having improved flow properties
US6245142B1 (en) * 1999-01-12 2001-06-12 Halliburton Energy Services, Inc. Flow properties of dry cementitious materials
US6660080B2 (en) * 1999-01-12 2003-12-09 Halliburton Energy Services, Inc. Particulate flow enhancing additives
US6379456B1 (en) * 1999-01-12 2002-04-30 Halliburton Energy Services, Inc. Flow properties of dry cementitious and non-cementitious materials
EP1456147A1 (fr) * 2001-11-30 2004-09-15 The University of Western Australia Additif particulaire de dispersion de melanges additionnels dans des ciments hydrauliques
JP4490816B2 (ja) * 2002-08-23 2010-06-30 ジェームズ ハーディー インターナショナル ファイナンス ベスローテン フェンノートシャップ 合成中空小球体
US6964302B2 (en) * 2002-12-10 2005-11-15 Halliburton Energy Services, Inc. Zeolite-containing cement composition
WO2005123618A2 (fr) * 2004-06-15 2005-12-29 Construction Research & Technology Gmbh Creation d'une resistance au gel et au degel de compositions a base de ciment
DE102006009840A1 (de) * 2006-03-01 2007-09-06 Röhm Gmbh Additive Baustoffmischungen mit Mikrovollpartikeln

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
None *
See also references of WO2005063647A1 *

Also Published As

Publication number Publication date
WO2005063647A1 (fr) 2005-07-14
JP2007515373A (ja) 2007-06-14
CN1898176A (zh) 2007-01-17
EP1547985A1 (fr) 2005-06-29
US20080245261A1 (en) 2008-10-09

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