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1. WO2020109267 - METHOD FOR PREPARING TRACK BED

Publication Number WO/2020/109267
Publication Date 04.06.2020
International Application No. PCT/EP2019/082496
International Filing Date 26.11.2019
IPC
E01B 1/00 2006.01
EFIXED CONSTRUCTIONS
01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
BPERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
1Ballastway; Other means for supporting the sleepers or the track; Drainage of the ballastway
E01B 27/00 2006.01
EFIXED CONSTRUCTIONS
01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
BPERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
27Placing, renewing, working, cleaning, or taking-up the ballast, with or without concurrent work on the track; Devices therefor; Packing sleepers
C08L 11/02 2006.01
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
11Compositions of homopolymers or copolymers of chloroprene
02Latex
E01C 3/04 2006.01
EFIXED CONSTRUCTIONS
01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
CCONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
3Foundations for pavings
04Foundations produced by soil stabilisation
E01C 7/36 2006.01
EFIXED CONSTRUCTIONS
01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
CCONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
7Coherent pavings made in situ
36by subjecting soil to stabilisation
C08F 6/22 2006.01
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
FMACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
6Post-polymerisation treatments
14Treatment of polymer emulsions
22Coagulation
CPC
C08C 1/15
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
CTREATMENT OR CHEMICAL MODIFICATION OF RUBBERS
1Treatment of rubber latex
14Coagulation
15characterised by the coagulants used
C08L 11/02
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
11Compositions of homopolymers or copolymers of chloroprene
02Latex
E01B 1/00
EFIXED CONSTRUCTIONS
01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
BPERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
1Ballastway; Other means for supporting the sleepers or the track; Drainage of the ballastway
E01B 27/00
EFIXED CONSTRUCTIONS
01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
BPERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
27Placing, renewing, working, cleaning, or taking-up the ballast, with or without concurrent work on the track; Devices therefor; Packing sleepers
Applicants
  • COVESTRO INTELLECTUAL PROPERTY GMBH & CO. KG [DE]/[DE]
Inventors
  • ZHANG, Chenxi
  • ZHU, Allan
  • XU, Zhengang
  • KUEKER, Peter
Agents
  • LEVPAT
Priority Data
18214408.920.12.2018EP
201811429700.727.11.2018CN
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) METHOD FOR PREPARING TRACK BED
(FR) PROCÉDÉ DE PRÉPARATION D'UN LIT DE VOIE
Abstract
(EN)
A method for preparing a track bed and a track bed prepared thereby. The method comprises the steps of: i) stacking ballasts to form a ballast substrate and tamping the ballast substrate and ii) applying a mixed system of an aqueous polychloroprene dispersion and a coagulate agent onto the ballast substrate and curing the mixed system together with the ballasts.
(FR)
L'invention concerne un procédé de préparation d'un lit de voie ainsi qu'un lit de voie préparé avec ledit procédé. Le procédé comprend les étapes consistant à : i) empiler des ballasts pour former un substrat de ballast et tasser le substrat de ballast et ii) appliquer un système mixte d'une dispersion aqueuse de polychloroprène et d'un agent coagulant sur le substrat de ballast et durcir le système mélangé conjointement avec les ballasts.
Also published as
Latest bibliographic data on file with the International Bureau