DK0630869T3 - Process for reducing water-soluble CrVI in cement and / or cementitious mixtures - Google Patents

Process for reducing water-soluble CrVI in cement and / or cementitious mixtures

Info

Publication number
DK0630869T3
DK0630869T3 DK94108800T DK94108800T DK0630869T3 DK 0630869 T3 DK0630869 T3 DK 0630869T3 DK 94108800 T DK94108800 T DK 94108800T DK 94108800 T DK94108800 T DK 94108800T DK 0630869 T3 DK0630869 T3 DK 0630869T3
Authority
DK
Denmark
Prior art keywords
cement
soluble
water
crvi
reducing water
Prior art date
Application number
DK94108800T
Other languages
Danish (da)
Inventor
Volkhart Dr Rer Nat Rudert
Michael Dr Rer Nat Jung
Gabriela Dipl-Chem Alter
Original Assignee
Dyckerhoff 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6491173&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=DK0630869(T3) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Dyckerhoff Ag filed Critical Dyckerhoff Ag
Application granted granted Critical
Publication of DK0630869T3 publication Critical patent/DK0630869T3/en

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
    • C04B14/26—Carbonates
    • C04B14/28—Carbonates of calcium
    • 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
    • C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
    • C04B18/04—Waste materials; Refuse
    • C04B18/14—Waste materials; Refuse from metallurgical processes
    • C04B18/146—Silica fume
    • 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
    • C04B24/18—Lignin sulfonic acid or derivatives thereof, e.g. sulfite lye
    • 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
    • C04B2111/10—Compositions or ingredients thereof characterised by the absence or the very low content of a specific material
    • C04B2111/1075—Chromium-free or very low chromium-content materials
    • C04B2111/1081—Chromium VI, e.g. for avoiding chromium eczema
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Civil Engineering (AREA)
  • Environmental & Geological Engineering (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)
  • Materials For Medical Uses (AREA)
  • Dental Preparations (AREA)
  • Soil Conditioners And Soil-Stabilizing Materials (AREA)
  • Processing Of Solid Wastes (AREA)
  • Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
  • Catalysts (AREA)
  • Silicates, Zeolites, And Molecular Sieves (AREA)
  • Removal Of Specific Substances (AREA)

Abstract

The invention relates to a method of reducing the allergy-inducing (allergenic) activity of water-soluble Cr<VI> in cements and/or cement-containing preparations, which comprises selecting in preliminary experiments a lignosulphonate from the multiplicity of lignosulphonates available on the market which reduces, in the desired manner, the water-soluble Cr<VI> content on exposure of a cement and/or a cement-containing preparation to water, and adding this selected lignosulphonate to cements and/or cement-containing preparations prior to or during the addition of water in the production of fresh cement mixtures.
DK94108800T 1993-06-24 1994-06-08 Process for reducing water-soluble CrVI in cement and / or cementitious mixtures DK0630869T3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19934321077 DE4321077A1 (en) 1993-06-24 1993-06-24 Process for the depression of the allergy-causing effect of water-soluble Cr · V ·· I · in cements and / or preparations containing cement

Publications (1)

Publication Number Publication Date
DK0630869T3 true DK0630869T3 (en) 1997-02-17

Family

ID=6491173

Family Applications (1)

Application Number Title Priority Date Filing Date
DK94108800T DK0630869T3 (en) 1993-06-24 1994-06-08 Process for reducing water-soluble CrVI in cement and / or cementitious mixtures

Country Status (14)

Country Link
EP (1) EP0630869B1 (en)
AT (1) ATE148434T1 (en)
CZ (1) CZ284621B6 (en)
DE (2) DE4321077A1 (en)
DK (1) DK0630869T3 (en)
EE (1) EE9400026A (en)
ES (1) ES2102100T3 (en)
GR (1) GR3022781T3 (en)
HU (1) HU215460B (en)
LT (1) LT3519B (en)
LV (1) LV11316B (en)
PL (1) PL303961A1 (en)
RU (1) RU2129868C1 (en)
SK (1) SK76194A3 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0960865A1 (en) * 1998-05-25 1999-12-01 Chemische Werke Zell-Wildshausen GMBH Agent for the reduction of chromium (VI) ions in cement
WO1999037593A1 (en) * 1998-01-27 1999-07-29 Chemische Werke Zell-Wildshausen Gmbh Medium for reducing chromium (vi) ions in a water-curing mass
EP0934914B1 (en) * 1998-01-27 2003-10-08 Chemische Werke Zell-Wildshausen GMBH Agent for the reduction of chromium(VI) ions in cement
WO2000006517A1 (en) * 1998-07-29 2000-02-10 'holderbank' Financiere Glarus Ag Method for preparing chromate-free inorganic binding agents
SK282086B6 (en) 1999-10-12 2001-10-08 Pova�Sk� Cement�Re�, A. S. Manufacturing method for cement with lowered contents of chrome
KR101135941B1 (en) 2003-11-21 2012-04-24 더블유.알. 그레이스 앤드 캄파니-콘. Sulfate dispersion chromate reducer
WO2005076858A2 (en) * 2004-02-04 2005-08-25 W.R. Grace & Co.-Conn. Liquid additive for intergrinding cement
GB0507566D0 (en) * 2005-04-14 2005-05-18 Brine Shield Uk Ltd Skin protection

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE248055C (en) *
GB466639A (en) * 1935-07-24 1937-06-01 Dewey & Almy Ltd Improvements in or relating to concrete and hydraulic cement
IS1443B6 (en) 1980-12-17 1990-12-14 Aalborg Portland A/S thurr cement mix
AU2260183A (en) 1982-11-17 1984-06-04 Aalborg Portland-Cement-Fabrik Aktieselskabet A method of improving the properties of a powder
WO1984002900A1 (en) 1983-01-20 1984-08-02 Cementa Ab A method of reducing eczema-inducing chromium in cement by adding ferrous sulfate, an additive comprising ferrous sulfate and the use of the additive
DD262852A1 (en) * 1987-08-03 1988-12-14 Zementind Rationalisierung METHOD FOR REDUCING THE CHROMATE CONTENT IN THE CEMENT LINKER
DK93690D0 (en) 1990-04-11 1990-04-11 Aalborg Portland Cement CEMENT COMPOSITION

Also Published As

Publication number Publication date
SK76194A3 (en) 1995-02-08
CZ154394A3 (en) 1995-01-18
ATE148434T1 (en) 1997-02-15
DE4321077A1 (en) 1995-01-05
EP0630869B1 (en) 1997-01-29
EE9400026A (en) 1995-12-15
EP0630869A1 (en) 1994-12-28
RU94021646A (en) 1996-05-27
LV11316B (en) 1996-12-20
DE59401688D1 (en) 1997-03-13
LT3519B (en) 1995-11-27
ES2102100T3 (en) 1997-07-16
GR3022781T3 (en) 1997-06-30
LV11316A (en) 1996-06-20
PL303961A1 (en) 1995-01-09
HUT67949A (en) 1995-05-29
CZ284621B6 (en) 1999-01-13
HU215460B (en) 1999-01-28
LTIP1952A (en) 1995-01-31
RU2129868C1 (en) 1999-05-10
HU9401886D0 (en) 1994-09-28

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