GB9218120D0 - Electrochemical stabilisation of mineral masses such as concrete,and electrode arrangements therefor - Google Patents

Electrochemical stabilisation of mineral masses such as concrete,and electrode arrangements therefor

Info

Publication number
GB9218120D0
GB9218120D0 GB929218120A GB9218120A GB9218120D0 GB 9218120 D0 GB9218120 D0 GB 9218120D0 GB 929218120 A GB929218120 A GB 929218120A GB 9218120 A GB9218120 A GB 9218120A GB 9218120 D0 GB9218120 D0 GB 9218120D0
Authority
GB
United Kingdom
Prior art keywords
concrete
electrolyte
mineral
electrochemical
anode
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.)
Granted
Application number
GB929218120A
Other versions
GB2271123A (en
GB2271123B (en
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.)
BROOMFIELD JOHN P
Original Assignee
BROOMFIELD JOHN P
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 BROOMFIELD JOHN P filed Critical BROOMFIELD JOHN P
Priority to GB9218120A priority Critical patent/GB2271123B/en
Publication of GB9218120D0 publication Critical patent/GB9218120D0/en
Priority to AU49697/93A priority patent/AU4969793A/en
Priority to PCT/GB1993/001808 priority patent/WO1994004474A1/en
Publication of GB2271123A publication Critical patent/GB2271123A/en
Application granted granted Critical
Publication of GB2271123B publication Critical patent/GB2271123B/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
    • C04B41/009—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone characterised by the material treated
    • 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
    • C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
    • C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
    • C04B41/4505—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements characterised by the method of application
    • C04B41/4564—Electrolytic or electrophoretic processes, e.g. electrochemical re-alkalisation of reinforced concrete
    • 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
    • C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
    • C04B41/53—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone involving the removal of at least part of the materials of the treated article, e.g. etching, drying of hardened concrete
    • C04B41/5369—Desalination, e.g. of reinforced concrete
    • C04B41/5376—Electrochemical desalination
    • 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
    • C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
    • C04B41/60—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone of only artificial stone
    • C04B41/61—Coating or impregnation
    • 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
    • C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
    • C04B41/60—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone of only artificial stone
    • C04B41/72—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone of only artificial stone involving the removal of part of the materials of the treated articles, e.g. etching
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/01—Reinforcing elements of metal, e.g. with non-structural coatings
    • E04C5/015—Anti-corrosion coatings or treating compositions, e.g. containing waterglass or based on another metal
    • 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
    • C04B2111/20—Resistance against chemical, physical or biological attack
    • C04B2111/2023—Resistance against alkali-aggregate reaction
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
    • C23F2201/00—Type of materials to be protected by cathodic protection
    • C23F2201/02—Concrete, e.g. reinforced

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Structural Engineering (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Architecture (AREA)
  • Electrochemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Water Supply & Treatment (AREA)
  • Civil Engineering (AREA)
  • Aftertreatments Of Artificial And Natural Stones (AREA)
  • Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
  • Prevention Of Electric Corrosion (AREA)

Abstract

Mineral masses eg hardened concrete reinforced with steel rebars can be stabilised against alkali-silicate reaction and/or treated by chloride extraction or realkalisation, by passing current around an electrochemical circuit having electrodes(s) (e.g. jacketed tubular anode(s) 5, 6) and electrolyte in contact therewith located in a passageway formed in the concrete under treatment and counterelectrode(s) (eg. rebars 2), in electrochemical contact with the mineral mass and separated from the electrolyte by the mineral mass, the electrolyte containing ionic treatment material to stabilise or treat the mineral mass. The material in its ionic form is thereby made to migrate deeply into the mineral mass. The treatment material can be lithium, calcium and/or sodium ions in alkaline solution where the electrode is an anode, or nitrite where the electrode is an anode. Preferably the passageway extends deeper in the concrete than the rebars nearest the concrete surface. Electrolyte liquid can recirculate in the jacketed tubular anodes.
GB9218120A 1992-08-26 1992-08-26 Electrochemical stabilisation of mineral masses such as concrete,and electrode arrangements therefor Expired - Fee Related GB2271123B (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB9218120A GB2271123B (en) 1992-08-26 1992-08-26 Electrochemical stabilisation of mineral masses such as concrete,and electrode arrangements therefor
AU49697/93A AU4969793A (en) 1992-08-26 1993-08-25 Electrochemical stabilisation of mineral masses such as concrete, and electrode arrangements therefor
PCT/GB1993/001808 WO1994004474A1 (en) 1992-08-26 1993-08-25 Electrochemical stabilisation of mineral masses such as concrete, and electrode arrangements therefor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9218120A GB2271123B (en) 1992-08-26 1992-08-26 Electrochemical stabilisation of mineral masses such as concrete,and electrode arrangements therefor

Publications (3)

Publication Number Publication Date
GB9218120D0 true GB9218120D0 (en) 1992-10-14
GB2271123A GB2271123A (en) 1994-04-06
GB2271123B GB2271123B (en) 1996-10-23

Family

ID=10720975

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9218120A Expired - Fee Related GB2271123B (en) 1992-08-26 1992-08-26 Electrochemical stabilisation of mineral masses such as concrete,and electrode arrangements therefor

Country Status (3)

Country Link
AU (1) AU4969793A (en)
GB (1) GB2271123B (en)
WO (1) WO1994004474A1 (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5391349A (en) * 1993-11-12 1995-02-21 Hansen; Charles N. Method for inhibiting corrosion of metal imbedded in concrete
US5837315A (en) * 1996-03-06 1998-11-17 Fmc Corporation Compositions and processes for remediating hardened cementitious materials
US6217742B1 (en) * 1996-10-11 2001-04-17 Jack E. Bennett Cathodic protection system
GB2322139A (en) * 1997-02-15 1998-08-19 Fosroc International Ltd Electrochemical treatment of concrete
GB9714047D0 (en) * 1997-07-03 1997-09-10 Fosroc International Ltd A process for the electrochemical treatment of concrete
DE19853332C1 (en) * 1998-11-19 2000-09-07 Preussenelektra Kernkraft Gmbh Process for the electrical contacting of concrete reinforcements
CA2384913C (en) * 1999-09-15 2009-12-29 Citec Gmbh Combination electrode for the electrochemical restoration of corrosion-damaged reinforced concrete and corresponding method for controlling the same
US6387244B1 (en) * 2000-10-18 2002-05-14 Cor/Sci, Llc. Cathodic protection of reinforced concrete with impregnated corrosion inhibitor
GB2471073A (en) * 2009-06-15 2010-12-22 Gareth Kevin Glass Corrosion Protection of Steel in Concrete
CA2870755A1 (en) * 2012-04-17 2013-10-24 Soletanche Freyssinet Method for the galvanic protection of a reinforced concrete structure
CN104388947B (en) * 2014-12-01 2017-03-29 山东大学（威海） A kind of easy drag-line anti-corrosion protection system
EP3762349B8 (en) * 2018-03-07 2022-08-31 Structural Technologies Method for electrochemical treatment of concrete structures affected by asr

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4832803A (en) * 1985-04-17 1989-05-23 Oystein Vennesland Removal of chlorides from concrete
EP0264421B1 (en) * 1986-05-02 1992-08-26 Norwegian Concrete Technologies A.S. Electrochemical re-alkalization of concrete
US5198082A (en) * 1987-09-25 1993-03-30 Norwegian Concrete Technologies A/S Process for rehabilitating internally reinforced concrete by removal of chlorides
NO171606C (en) * 1988-01-04 1993-04-14 John B Miller PROCEDURE FOR AA STANSE ALKALI AGGREGATE REACTIONS IN CONCRETE O.L., AND A DEAL FOR AA TO IMPLEMENT THIS PROCEDURE
FR2642064B1 (en) * 1989-01-24 1993-04-16 Miller John PROCESS FOR STOPPING REACTIONS OF ALKALINE AGGREGATES IN CONCRETE, AND MEANS FOR CARRYING OUT SAID METHOD
DD285144A5 (en) * 1989-06-15 1990-12-05 Univ Dresden Tech PROCESS FOR REALIZING STEEL-WOVEN BOTON ELEMENTS
US5366602A (en) * 1989-12-11 1994-11-22 Sri International Method of protecting embedded reinforcing members
US5141607A (en) * 1990-07-31 1992-08-25 Corrpro Companies, Inc. Method and apparatus for the removal of chlorides from steel reinforced concrete structures

Also Published As

Publication number Publication date
GB2271123A (en) 1994-04-06
AU4969793A (en) 1994-03-15
WO1994004474A1 (en) 1994-03-03
GB2271123B (en) 1996-10-23

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20100826