GB2279664B - Realkalization and dechlorination of concrete by surface mounted electrochemical means - Google Patents

Realkalization and dechlorination of concrete by surface mounted electrochemical means

Info

Publication number
GB2279664B
GB2279664B GB9413047A GB9413047A GB2279664B GB 2279664 B GB2279664 B GB 2279664B GB 9413047 A GB9413047 A GB 9413047A GB 9413047 A GB9413047 A GB 9413047A GB 2279664 B GB2279664 B GB 2279664B
Authority
GB
United Kingdom
Prior art keywords
concrete
realkalization
dechlorination
surface mounted
electrochemical means
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.)
Expired - Fee Related
Application number
GB9413047A
Other versions
GB9413047D0 (en
GB2279664A (en
Inventor
John Francis Drewett
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.)
CONCRETE REPAIRS Ltd
Original Assignee
CONCRETE REPAIRS Ltd
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=10738413&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=GB2279664(B) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by CONCRETE REPAIRS Ltd filed Critical CONCRETE REPAIRS Ltd
Priority to CA 2127607 priority Critical patent/CA2127607A1/en
Priority to AU67324/94A priority patent/AU682690B2/en
Publication of GB9413047D0 publication Critical patent/GB9413047D0/en
Publication of GB2279664A publication Critical patent/GB2279664A/en
Application granted granted Critical
Publication of GB2279664B publication Critical patent/GB2279664B/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
    • C04B41/53—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
    • C04B41/009—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
    • C04B41/60—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

Abstract

In a method for realkalising and dechlorinating corroded areas of reinforcement steel in concrete and masonry electrochemically, the anode is composed of a preformed permeable synthetic material e.g. a sponge impregnated with alkaline metal salts in solution to which has been added a setting agent to form a gel and upon which is superimposed an electrically conductive material eg. conductive paint or metal mesh. The anode can be preformed and placed in situ on the surface of the affected concrete.
GB9413047A 1993-07-07 1994-07-01 Realkalization and dechlorination of concrete by surface mounted electrochemical means Expired - Fee Related GB2279664B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CA 2127607 CA2127607A1 (en) 1993-07-07 1994-07-07 Realkalization and dechlorination of concrete by surface mounted electrochemical means
AU67324/94A AU682690B2 (en) 1993-07-07 1994-07-07 Realkalization and dechlorination of concrete by surface mounted electrochemical means

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB939314029A GB9314029D0 (en) 1993-07-07 1993-07-07 Realkalization and dechlorination by surface mounted electrochemical means

Publications (3)

Publication Number Publication Date
GB9413047D0 GB9413047D0 (en) 1994-08-24
GB2279664A GB2279664A (en) 1995-01-11
GB2279664B true GB2279664B (en) 1996-09-04

Family

ID=10738413

Family Applications (2)

Application Number Title Priority Date Filing Date
GB939314029A Pending GB9314029D0 (en) 1993-07-07 1993-07-07 Realkalization and dechlorination by surface mounted electrochemical means
GB9413047A Expired - Fee Related GB2279664B (en) 1993-07-07 1994-07-01 Realkalization and dechlorination of concrete by surface mounted electrochemical means

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB939314029A Pending GB9314029D0 (en) 1993-07-07 1993-07-07 Realkalization and dechlorination by surface mounted electrochemical means

Country Status (1)

Country Link
GB (2) GB9314029D0 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0962432A1 (en) * 1998-05-30 1999-12-08 General Coatings NV Method and apparatus for the removal of ionic impurities from reinforced concrete structures
NO316639B1 (en) * 2002-05-13 2004-03-15 Protector As Procedure for Cathodic Protection against Reinforcement Corrosion on Moist and Wet Marine Concrete Structures

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0200428A2 (en) * 1985-04-17 1986-11-05 Norwegian Concrete Technologies A.S. Removal of chlorides from concrete
EP0264421A1 (en) * 1986-05-02 1988-04-27 Norsk Teknisk Bygge Noteby Electrochemical re-alkalization of concrete.
CA2040610A1 (en) * 1990-05-21 1991-11-22 John E. Bennett Apparatus for the removal of chloride from reinforced concrete structures

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0200428A2 (en) * 1985-04-17 1986-11-05 Norwegian Concrete Technologies A.S. Removal of chlorides from concrete
EP0264421A1 (en) * 1986-05-02 1988-04-27 Norsk Teknisk Bygge Noteby Electrochemical re-alkalization of concrete.
CA2040610A1 (en) * 1990-05-21 1991-11-22 John E. Bennett Apparatus for the removal of chloride from reinforced concrete structures
US5296120A (en) * 1990-05-21 1994-03-22 Eltech Systems Corporation Apparatus for the removal of chloride from reinforced concrete structures

Also Published As

Publication number Publication date
GB9413047D0 (en) 1994-08-24
GB9314029D0 (en) 1993-08-18
GB2279664A (en) 1995-01-11

Similar Documents

Publication Publication Date Title
ES2136719T3 (en) METHOD AND APPARATUS FOR THE CATHODIC PROTECTION OF REINFORCED CONCRETE STRUCTURES.
DE69309986T2 (en) Zinc anode usable in batteries
CA2392818A1 (en) Improvement in cathodic protection system
GR3024346T3 (en) Electrically conductive polymer composition, method of making same and device incorporating same
EP0264421A1 (en) Electrochemical re-alkalization of concrete.
PL337664A1 (en) Method of electrochemically treating concrete mixes
GB2279664B (en) Realkalization and dechlorination of concrete by surface mounted electrochemical means
BR8206356A (en) CATHODIC ASSEMBLY METHOD OF EXECUTION OF ELECTRIC ASSEMBLY ELECTRIC CELL
CA2281376A1 (en) Electrolytic restoration of concrete
CA2031123A1 (en) Grid electrode having a tailored surface for cathodic protection of steel reinforced concrete structures
Drewett Anode for impressed current re-alkalization and dechlorination of reinforced concrete subjected to carbonation attack or aggressive ion penetration
GB2076427B (en) The in situ metal plating of the cathode terminal surface of an electrochemical cell
JP3797675B2 (en) Method for recovering alkalinity of concrete with neutralized parts.
AU682690B2 (en) Realkalization and dechlorination of concrete by surface mounted electrochemical means
ES2013128A6 (en) Procedure for non-destructive and quantitative electrochemical determination of the rate of metal corrosion in reinforced concrete structures of large dimensions, by means of the confinement with sensors of an electrical signal which is applied
JPH07315960A (en) Electrochemical treatment of concrete
Gurusamy et al. The long term performance of embedded reference electrodes for cathodic protection and in situ monitoring of steel in concrete
Wilkins et al. Mechanisms of Corrosion of Steel Reinforcements in Concrete Immersed in Seawater
Levin et al. Characteristics of Hydrogen Penetration Through Thin Metal Layers During Cathodic Polarisation
Borovkov et al. The Behaviour of a Silver Electrode in Contact with a Solid Electrolyte
TW374804B (en) A method for electrochemically treating concrete
MY102197A (en) Electrochemical re-alkalization of concrete
ES8103486A1 (en) A battery activated by sea water (Machine-translation by Google Translate, not legally binding)
GB1328508A (en) Method of and apparatus for electrochemically etching metal workpieces

Legal Events

Date Code Title Description
772C Application made to the comptroller for revocation (sect. 72/1977)
772 Application made for revocation (sect. 72/1977)
772E Application withdrawn (sect. 72/1977)
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20030701