Home Micropiles Self-drilling bars Geotechnical Solutions Who we are Contacts materials products processing application The installation of the micropiles is carried out both inside a lined perforation and, directly, with the tube for the micropile connected to the rotation head of the drill. In the latter case, the micropile is equipped with a disposable perforated tip to allow the passage of the drilling fluid and the creation of an annular space sufficient to guarantee a coating of the reinforcement with 2 or 3 cm of cement mixture (protection against corrosion). The tips, with 4 blades, are replaced by tricones when the micropile has to be made through formations of compact soil or containing troughs of hard rocks. Another possibility of installation consists in using the micropile as an Odex or Tubex coating with a down the hole hammer and with an eccentric cutting edge. This method has been used on several occasions with success, in the context of the execution of tunnel insertions. The micropile is injected by means of pairs of injection pads called m3 and / or m12 which are inserted into the thickness of the tube. These patented pads, which are distributed exclusively by R-Tubi SpA, work as non-return valves to be able to inject the soil several times. This reinjection ability improves the bearing capacity of the micropile and allows to optimize the total length of amar. The m12 type pads differ from the m3 by their opening pressure located around 20 bar to prevent them from opening during direct drilling. These pads must be used in conjunction with a double shutter that must be positioned in correspondence with the pair of pads you wish to inject. The m3-type pads, on the other hand, can be injected simultaneously by means of an injection head to be screwed onto the head element of the micropile. They are particularly convenient with the coated perforation system. M12 Valve M3 Valve INSTALLATION and INJECTION OF THE MICROPALS Grazie alle loro versatili possibilità di accoppiamento, i nostri micropali vengono utilizzati in tutti quei lavori dove lo spazio disponibile sul cantiere impone di mettere in opera dei tubi di piccole dimensioni da assemblarsi gli uni con gli altri. Altre interessanti applicazioni possono trovarsi nel caso di diffiicile accesso al cantiere quando l’installazione di una attrezzatura di perforazione ingombrante è da escludere e dove può essere installata solo una perforatrice leggera e di piccole dimensioni . In generale i nostri micropali possono essere impiegati sistematicamente in tutti i casi dove uno sforzo di trazione o di compressione in superficie deve essere trasmesso a livello degli strati compatti del sottosuolo. POSSIBILI APPLICAZIONI Resumption of old foundations Micropiles used for traction to contrast the hydrostatics lift Stabilization of a road embankment Micro-Berliner Threadings in gallery APPLICATIONS R-Tubi SpA VAT number 01663100160 Share capital (€ 1.003.600,00) REA (RM 1515309) Copyright 2018 Privacy Policy Quality policy Quality Policy Via Eleonora Duse, 28 00197 Rome - Italy info@rtubi.com Follow us: