CH419560A

CH419560A - Process for sealing a gap in a masonry structure

Info

Publication number: CH419560A
Application number: CH644265A
Authority: CH
Inventors: Byttebier Carlos
Original assignee: Sogerep S A
Priority date: 1965-05-04
Filing date: 1965-05-04
Publication date: 1966-08-31

Description

  

  Procédé     d'obturation    d'une fente dans un ouvrage de maçonnerie    La présente invention a pour objet un procédé  d'obturation d'une fente dans un ouvrage de maçon  nerie.  



  Ce procédé est caractérisé par le fait qu'on fore  une série de trous dans ledit ouvrage, au droit de  ladite fente, engage     un    tube dans chacun desdits  trous, bouche l'entrée     desdits    trous, colmate la fente  en surface de l'ouvrage, à l'aide d'un produit for  mant joint, puis injecte sous pression, dans lesdits  tubes, un produit d'obturation qui s'insinue dans la  fente et l'obture.  



  Le dessin illustre, à titre d'exemple, un mode de       mise    en     oeuvre    du procédé suivant l'invention.  



  La     fig.    1 est une vue .en perspective, avec coupe  verticale, d'une partie d'un mur en béton présentant  une fente.  



  La     fig.    2 est une coupe transversale verticale  d'un détail de ce mur, à échelle agrandie, et  la     fig.    3 est une coupe transversale du mur, épou  sant la fente.  



  Le mur représenté, en béton, est     désigné    par 1,  et la fente qu'il s'agit d'obturer par 2.  



  Le procédé d'obturation consiste à forer dans le  mur, au droit de ladite fente, une série de trous  borgnes 3, d'un diamètre de 10 mm par exemple,  de proche en proche, à une distance sensiblement  égale à l'épaisseur du mur ; la profondeur de chaque  trou 3     correspond    sensiblement à la moitié de l'épais  seur du mur.  



  On engage dans chaque trou 3 un tube métalli  que 4, par exemple en cuivre, débordant légèrement  du trou, dont le diamètre sera de l'ordre de 6 mm.  Chaque tube 4 traverse un bouchon de liège 5 en  gagé     dans    le trou 3 à une profondeur suffisante pour  qu'il subsiste, à l'entrée du trou, un espace que l'on    bouche à l'aide d'un produit d'obturation, par exem  ple un mortier 6 mélangé à de la résine     Epoxy.     



  On colmate ensuite la fente 2     superficiellement,     au moyen d'un joint bitumineux 7.  



  Après avoir     laissé    ce joint 7, de même que les  bouchons 6, se solidifier pendant au moins 24 heu  res, on injecte dans chaque tube 4     successivement,     sous pression, un liant d'obturation, par exemple à  base de résine     Epoxy,    désigné par 8 à la     fig.    3. La  machine à injection n'a pas été représentée, seule  l'extrémité d'une conduite d'injection souple 9 ayant  été représentée à la     fig.    3, branchée sur l'un des  tubes 4.  



  Après avoir rempli le trou 3, la matière d'obtu  ration s'insinue dans la fente 2. L'injection se pour  suit jusqu'à ce que la matière d'obturation 8 pénètre  dans le trou 3 suivant et sorte par le tube 4 corres  pondant. On bouche alors, au moyen d'un bouchon  de liège 10, le tube 4 dans lequel vient de s'effec  tuer l'injection et on procède à la même opération  dans le tube suivant. On opère ainsi de proche en  proche jusqu'à ce que la totalité de la fente 2 soit  remplie de matière d'obturation 8.  



  On laisse ensuite la solidification s'opérer pen  dant le temps nécessaire, qui pourra durer plusieurs  jours, suivant la température ambiante, puis on  coupe les tubes 4 à ras le mur et on meule le joint  7 de telle manière que le mur ne porte pratiquement  plus de traces de la fente.  



  En variante, on pourra procéder à l'injection sous  pression dans plusieurs tubes 4 simultanément.



  A method of closing a slot in a masonry structure The present invention relates to a process for closing a slot in a masonry structure.



  This method is characterized by the fact that a series of holes is drilled in said structure, in line with said slot, engages a tube in each of said holes, blocks the entrance to said holes, seals the slot on the surface of the structure, using a joint forming product, then injects under pressure, into said tubes, a sealing product which creeps into the slot and closes it.



  The drawing illustrates, by way of example, an embodiment of the method according to the invention.



  Fig. 1 is a perspective view, in vertical section, of part of a concrete wall having a slot.



  Fig. 2 is a vertical cross section of a detail of this wall, on an enlarged scale, and FIG. 3 is a cross section of the wall, marrying the slot.



  The wall shown, made of concrete, is designated by 1, and the slot to be closed by 2.



  The sealing process consists in drilling in the wall, in line with said slot, a series of blind holes 3, with a diameter of 10 mm for example, step by step, at a distance substantially equal to the thickness of the Wall ; the depth of each hole 3 corresponds approximately to half the thickness of the wall.



  A metal tube 4, for example copper, slightly projecting from the hole, the diameter of which will be of the order of 6 mm is engaged in each hole 3. Each tube 4 passes through a cork stopper 5 pledged in the hole 3 to a sufficient depth so that there remains, at the entrance of the hole, a space which is plugged using a sealing product. , for example a mortar 6 mixed with epoxy resin.



  The slot 2 is then sealed superficially by means of a bituminous seal 7.



  After leaving this seal 7, as well as the plugs 6, to solidify for at least 24 hours, each tube 4 is successively injected, under pressure, with a sealing binder, for example based on epoxy resin, designated by 8 in fig. 3. The injection machine has not been shown, only the end of a flexible injection pipe 9 having been shown in FIG. 3, connected to one of the tubes 4.



  After filling the hole 3, the sealing material creeps into the slot 2. The injection continues until the sealing material 8 enters the next hole 3 and exits through the tube 4 corresponding. The tube 4 in which the injection has just been carried out is then sealed by means of a cork stopper 10 and the same operation is carried out in the following tube. This is done step by step until all of the slot 2 is filled with sealing material 8.



  The solidification is then allowed to take place for the necessary time, which may last several days, depending on the ambient temperature, then the tubes 4 are cut flush with the wall and the joint 7 is ground in such a way that the wall hardly bears no more traces of the crack.



  As a variant, it will be possible to carry out the injection under pressure into several tubes 4 simultaneously.

Claims

CLAIM Process for closing a slot in a masonry structure, characterized by the fact that a series of holes is drilled. in said structure, in line with said slot, engages a tube in each of said holes, plugs the entrance to said holes, seals the slot in the surface of the structure, using a product forming a seal, then injects under pressure , in said tubes, a sealing product which creeps into the slot and closes it. SUB-CLAIMS 1.

Process according to claim, characterized in that the injection is carried out under. pressure in each tube successively. 2. Method according to claim and sub-claim 1, characterized in that the end of each tube is blocked, after having carried out the injection into this tube, so that the sealing material is not expelled by this tube during injection into the next tube. 3.

Method according to claim, characterized in that the distance separating said holes. is substantially equal to the thickness of the structure presenting the slot. 4. Method according to claim, characterized in that the depth of said holes is substantially equal to half the thickness of the structure having said slot. 5. Method according to claim, characterized in that the sealing material used is a plastic resin. 6. Method according to claim, characterized in that the surface slit is sealed using a bituminous material. 7.

Process according to claim, characterized in that after having allowed the sealing material to solidify, the part of the tubes projecting from the structure is cut and the surface of the structure is then ground so as to remove the material clogging. 8. Method according to claim, characterized in that the entrance to each hole is closed by means of a plug through which the tube passes. 9.

Process according to claim and sub-claim 8, characterized in that the plug is fully engaged in the hole, so as to allow the entry of the hole, between its orifice and the plug, to then be closed off. using a sealing material.