US20130147075A1 - Remediation of crosstie cracks - Google Patents

Remediation of crosstie cracks Download PDF

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Publication number
US20130147075A1
US20130147075A1 US13/809,005 US201113809005A US2013147075A1 US 20130147075 A1 US20130147075 A1 US 20130147075A1 US 201113809005 A US201113809005 A US 201113809005A US 2013147075 A1 US2013147075 A1 US 2013147075A1
Authority
US
United States
Prior art keywords
epoxy resin
resin binder
quartz sand
cracks
sealing agent
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.)
Abandoned
Application number
US13/809,005
Inventor
Enno Falk
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.)
SERSA GROUP AG (SCHWEIZ)
Original Assignee
SERSA GROUP AG (SCHWEIZ)
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 SERSA GROUP AG (SCHWEIZ) filed Critical SERSA GROUP AG (SCHWEIZ)
Assigned to SERSA GROUP AG (SCHWEIZ) reassignment SERSA GROUP AG (SCHWEIZ) ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: Falk, Enno
Publication of US20130147075A1 publication Critical patent/US20130147075A1/en
Abandoned legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
    • E01B31/00—Working rails, sleepers, baseplates, or the like, in or on the line; Machines, tools, or auxiliary devices specially designed therefor
    • E01B31/20—Working or treating non-metal sleepers in or on the line, e.g. marking, creosoting
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G23/00—Working measures on existing buildings
    • E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
    • E04G23/0203—Arrangements for filling cracks or cavities in building constructions
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G23/00—Working measures on existing buildings
    • E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
    • E04G23/0203—Arrangements for filling cracks or cavities in building constructions
    • E04G23/0211—Arrangements for filling cracks or cavities in building constructions using injection

Definitions

  • the present invention relates to a method and a sealing agent for closing cracks in concrete crossties.
  • Icosit® a 2-component epoxy resin binder, in the form of pourable mortar for fixing bolts and for grouting adhesive joints having a width of more than 1 cm.
  • Stable epoxy resin mortar is used for sealing rail base plates, bridge bearings and machine foundations.
  • Icosit® is offered by Sika.
  • cracks in the concrete crosstie are filled with a sealing agent which consists of a pourable epoxy resin mortar.
  • the mortar is formed from a mixture of an epoxy resin binder with quartz sand.
  • the quartz sand has a grain size from 0.1 mm to 1 mm.
  • the grain size is 0.2 mm to 0.7 mm, and more preferably 0.4 mm to 0.7 mm.
  • the sand used preferably has grains of diameters in the total stated grain size range. It is, however, also possible that a sand is selected, the grains of which only have diameters in a range smaller than the stated one. Examples thereof are ranges from 0.1 mm to 0.3 mm, 0.2 mm to 0.7 mm and 0.5 mm to 1 mm.
  • this pourable mortar is suitable for sealing very small cracks in concrete crossties. It has surprisingly been found that use of a finer grain size does not lead to a better result.
  • the mortar is astonishingly also suitable for cracks, the width of which is no greater, or insignificantly greater than, the quartz sand grain size used. For instance, cracks of a width of equal to or less than 1 mm, in particular of 0.3 mm, 0.5 mm and 1 mm, may be filled and sealed.
  • the epoxy resin binder and quartz sand are used in a mixing ratio of 1:1 weight percent.
  • the epoxy resin binder is a 2-component agent.
  • Icosit® from Sika has proved itself. Good results were achieved with Icosit® KC 220/60 TX.
  • the crack that is to be sealed is preferably dried before it is filled with the mixture.
  • a propane thawing apparatus is suitable for the drying.
  • the pourable mortar is applied with a spatula onto and thereby into the crack, wherein it is spread along the crack.
  • Icosit® KC 220/60 TX was mixed with quartz sand of the following grain sizes:
  • the mixing ratio was in each case 1:1 weight percent.
  • the depth of penetration of the pourable mortar thus mixed was always about 10 mm. No significant differences were determined.
  • the sealing compound is cured approximately 33 h after processing.
  • the filled crossties can, however, be used for traffic immediately after completion of the remediation.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Sealing Material Composition (AREA)
  • Machines For Laying And Maintaining Railways (AREA)
  • Railway Tracks (AREA)

Abstract

The invention relates to a method and sealing agent for sealing cracks in concrete crossties of a railway rail, in particular in concrete crossties of a ballastless track, wherein the cracks have a width equal to or less than 1 mm. According to the invention, a mixture of an epoxy resin binder with quartz sand is used, wherein the quartz sand has a grain size of 0.1 mm to 1 mm.

Description

    TECHNICAL FIELD
  • The present invention relates to a method and a sealing agent for closing cracks in concrete crossties.
    • PRIOR ART
  • Railway crossties are subjected to severe loads. They must therefore be replaced regularly. This is relatively cost-intensive and in addition leads to relatively long interruptions in the use of the railway track. In particular, in the case of what are called “ballastless railway tracks”, in which the crossties are cast, an alternative solution for remediation of the crossties is necessary.
  • It is known to use Icosit®, a 2-component epoxy resin binder, in the form of pourable mortar for fixing bolts and for grouting adhesive joints having a width of more than 1 cm. Stable epoxy resin mortar is used for sealing rail base plates, bridge bearings and machine foundations. Icosit® is offered by Sika.
    • DESCRIPTION OF THE INVENTION
  • It is an object of the invention to provide a simple, inexpensive and rapid method and a means for remediation of concrete crossties of a railway track.
  • This object is achieved by a method having the features of claim 1, and a sealing agent having the features of claim 9.
  • According to the invention, cracks in the concrete crosstie are filled with a sealing agent which consists of a pourable epoxy resin mortar. In this case the mortar is formed from a mixture of an epoxy resin binder with quartz sand. According to the invention, the quartz sand has a grain size from 0.1 mm to 1 mm. Preferably, the grain size is 0.2 mm to 0.7 mm, and more preferably 0.4 mm to 0.7 mm.
  • The sand used preferably has grains of diameters in the total stated grain size range. It is, however, also possible that a sand is selected, the grains of which only have diameters in a range smaller than the stated one. Examples thereof are ranges from 0.1 mm to 0.3 mm, 0.2 mm to 0.7 mm and 0.5 mm to 1 mm.
  • It has surprisingly been found that this pourable mortar is suitable for sealing very small cracks in concrete crossties. It has surprisingly been found that use of a finer grain size does not lead to a better result. The mortar is astonishingly also suitable for cracks, the width of which is no greater, or insignificantly greater than, the quartz sand grain size used. For instance, cracks of a width of equal to or less than 1 mm, in particular of 0.3 mm, 0.5 mm and 1 mm, may be filled and sealed.
  • As a result, in particular concrete crossties in ballastless railway tracks may be promptly remediated and need not be removed from the track.
  • Good results were achieved, when, apart from the binder and the quartz sand, no further component was added. Preferably, the epoxy resin binder and quartz sand are used in a mixing ratio of 1:1 weight percent.
  • Preferably, the epoxy resin binder is a 2-component agent. In particular, Icosit® from Sika has proved itself. Good results were achieved with Icosit® KC 220/60 TX.
  • In the method according to the invention, the crack that is to be sealed is preferably dried before it is filled with the mixture. For example, a propane thawing apparatus is suitable for the drying. Preferably, the pourable mortar is applied with a spatula onto and thereby into the crack, wherein it is spread along the crack.
  • Further embodiments and variants of the method are given in the dependent claims.
    • DESCRIPTION OF PREFERRED EMBODIMENTS
  • Icosit® KC 220/60 TX was mixed with quartz sand of the following grain sizes:
    • a) 0.1 mm to 0.3 mm
    • b) 0.2 mm to 0.7 mm
    • c) 0.5 mm to 1.0 mm
    • d)
  • The mixing ratio was in each case 1:1 weight percent.
  • Cracks of 0.3 mm, 0.5 mm and 1.0 mm were filled.
  • The depth of penetration of the pourable mortar thus mixed was always about 10 mm. No significant differences were determined.
  • When the cracks were sealed, the following procedure was followed:
    • a) the cracks to be filled are marked
    • b) the construction site is set up
    • c) the cracks are, if need be, cleaned and dried using a propane thawing apparatus
    • d) the mortar according to the invention is poured by hand into the cracks, at an external temperature of +5° C. to +35° C., or applied with a spatula, and
    • e) the sealing compound is reworked, in particular spread with a spatula. The reworking proceeds immediately after application of the mortar.
  • The sealing compound is cured approximately 33 h after processing. The filled crossties can, however, be used for traffic immediately after completion of the remediation.

Claims (14)

1. A method for sealing cracks in concrete crossties of a railway track, in particular in concrete crossties of a ballastless railway track, wherein the cracks have a width of equal to or less than 1 mm, characterized in that, for the sealing, a mixture of an epoxy resin binder with quartz sand is used, wherein the quartz sand has a grain size from 0.1 mm to 1 mm.
2. The method as claimed in claim 1, wherein a grain size from 0.2 mm to 0.7 mm, in particular from 0.4 mm to 0.7 mm, is used.
3. The method as claimed in claim 1, wherein epoxy resin binder and quartz sand are used in a mixing ratio of 1:1 weight percent.
4. The method as claimed in claim 1, wherein, as epoxy resin binder, a 2-component agent is used.
5. The method as claimed in claim 1, wherein, as epoxy resin binder, Icosit® is used.
6. The method as claimed in claim 5, wherein, as epoxy resin binder, Icosit® KC 220/60 TX is used.
7. The method as claimed in claim 1, wherein a crack that is to be sealed is dried before it is filled with the mixture.
8. The method as claimed in claim 7, wherein a propane thawing apparatus is used for the drying.
9. A sealing agent for use in the method as claimed in claim 1, characterized in that the sealing agent consists of a mixture of an epoxy resin binder with quartz sand, wherein the quartz sand has a grain size from 0.1 mm to 1 mm.
10. The sealing agent as claimed in claim 9, wherein the quartz sand has a grain size from 0.2 mm to 0.7 mm, in particular from 0.4 mm to 0.7 mm.
11. The sealing agent as claimed in claim 1, wherein epoxy resin binder and quartz sand are present in a mixing ratio of 1:1 weight percent.
12. The sealing agent as claimed in claim 1, wherein the epoxy resin binder is a 2-component agent.
13. The sealing agent as claimed in claim 1, wherein the epoxy resin binder is Icosit®.
14. The sealing agent as claimed in claim 13, wherein the epoxy resin binder is Icosit® KC 220/60 TX.
US13/809,005 2010-07-09 2011-06-30 Remediation of crosstie cracks Abandoned US20130147075A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP10405133A EP2405080A1 (en) 2010-07-09 2010-07-09 Arrangement for filling cracks in railway sleepers
EP10405133.9 2010-07-09
PCT/CH2011/000156 WO2012003594A1 (en) 2010-07-09 2011-06-30 Remediation of crosstie cracks

Publications (1)

Publication Number Publication Date
US20130147075A1 true US20130147075A1 (en) 2013-06-13

Family

ID=43299334

Family Applications (1)

Application Number Title Priority Date Filing Date
US13/809,005 Abandoned US20130147075A1 (en) 2010-07-09 2011-06-30 Remediation of crosstie cracks

Country Status (8)

Country Link
US (1) US20130147075A1 (en)
EP (2) EP2405080A1 (en)
AU (1) AU2011276931A1 (en)
CA (1) CA2803648A1 (en)
DK (1) DK2591185T3 (en)
EA (1) EA021221B1 (en)
ES (1) ES2531045T3 (en)
WO (1) WO2012003594A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103761401A (en) * 2014-02-14 2014-04-30 中铁第一勘察设计院集团有限公司 Data processing method for integrated slab layout and construction of CRTSIII type ballastless track

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202012001307U1 (en) * 2012-02-10 2013-05-13 Bennert Ingenieurbau Gmbh Apparatus for post-consolidation of a rail in a ballastless installation
DE202012001306U1 (en) * 2012-02-10 2013-05-13 Bennert Ingenieurbau Gmbh Apparatus for post-consolidation of a rail in a ballastless installation
PL2690218T3 (en) 2012-07-22 2017-08-31 GETEK Holding GmbH Method for crack repair on concrete sleepers for railway tracks
RU2669718C1 (en) * 2018-02-08 2018-10-15 Ханлар Шахлар оглы Бабаханов Polymeric composition for rails repair

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5335850A (en) * 1989-12-08 1994-08-09 Igwemezie Jude O Attenuating pad for concrete railway ties
US5771557A (en) * 1996-11-21 1998-06-30 Contrasto; Sam Concrete internal metal stitching

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1171459B (en) * 1962-09-07 1964-06-04 Henkel & Cie Gmbh Procedure for reattaching loosened sleeper bolts
GB2265901B (en) * 1992-04-06 1996-04-10 Paul Douglas Bailey Epoxy resin
JP2002332604A (en) * 2001-05-07 2002-11-22 Sekisui Chem Co Ltd Method for re-driving screw spike to composite sleeper
DE10148533A1 (en) * 2001-10-01 2003-04-10 Zueblin Ag Method for sealing cracks in rocks or in man-made structures involves application of a mixture of an inorganic solid and a molten bonding agent through boreholes
JP2007126844A (en) * 2005-11-02 2007-05-24 Asahi Kasei Chemicals Corp Method and fixing agent for repairing sleeper
JP4226015B2 (en) * 2006-03-23 2009-02-18 住友大阪セメント株式会社 How to repair concrete sleepers

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5335850A (en) * 1989-12-08 1994-08-09 Igwemezie Jude O Attenuating pad for concrete railway ties
US5771557A (en) * 1996-11-21 1998-06-30 Contrasto; Sam Concrete internal metal stitching

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
http://skelton-metals.com/img/PDS%20Icosit%20KC%20220_60%20TX.pdf; 05/05/2010;Pages 1-3 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103761401A (en) * 2014-02-14 2014-04-30 中铁第一勘察设计院集团有限公司 Data processing method for integrated slab layout and construction of CRTSIII type ballastless track

Also Published As

Publication number Publication date
EA201291478A1 (en) 2013-06-28
EP2405080A1 (en) 2012-01-11
EP2591185A1 (en) 2013-05-15
EP2591185B1 (en) 2015-01-14
CA2803648A1 (en) 2012-01-12
EA021221B1 (en) 2015-04-30
WO2012003594A1 (en) 2012-01-12
DK2591185T3 (en) 2015-04-13
AU2011276931A1 (en) 2013-01-17
ES2531045T3 (en) 2015-03-10

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Legal Events

Date Code Title Description
AS Assignment

Owner name: SERSA GROUP AG (SCHWEIZ), SWITZERLAND

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:FALK, ENNO;REEL/FRAME:029846/0586

Effective date: 20130113

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION