List of products by author: R. Kochen

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  Extruded Concrete Lining

  Abstract: The most commonly used methods for tunnel construction are the NATM (New Austrian Tunneling Method) and the TBMs (Tunnel Boring Machines). These techniques typically use sprayed concrete and precast segments, respectively.Extruded Concrete Lining (ECL) has recently been used as an innovative alternative to tunnel lining. This technique was developed in the last century by European and Japanese...

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  Recovery of Collapse and Restoration of Tunnel Belonging to the Water Supply System

  Abstract: Underground structures require maintenance services and, if necessary, recovery, since they may suffer structural damage both during its construction as during its lifetime, by natural wear and tear or for associated geological-geotechnical risks. This article presents the measures adopted for recovery of collapse and tunnel restoration, executed by NATM method, located in the city of Mogi das...

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