2017/0668/GR
EC/EFTA
GR Grèce
  • B00 - CONSTRUCTION
2018-03-28
2018-01-05

Public works and studies, Cement grouting in tunnels

Approval of seventy (70) Hellenic Technical Specifications (HTS), the application of which is mandatory in all public works and studies

ELOT TS 1501-12-07-02-00 Cement grouting in tunnels

Approval of seventy (70) Hellenic Technical Specifications (HTS), the application of which is mandatory in all public works and studies

ELOT TS 1501-12-07-02-00 Cement grouting in tunnels

The operations provided for in this Specification concern all provisions related to the application of cement grouting in underground works, according to the approved Study and the on-site conditions of the geomaterial. The cement grouting may be used to fill in gaps or open jointed parts of the rock mass during drilling or, at a later stage, to fill any gaps behind the permanent coatings of the underground works, to stabilise and enforce the rock mass around the underground works during drilling and/or, at an even later stage, to reduce and control subsidence within appropriate limits in order to control underground or other kinds of water, according to the Authority's instructions. The cement grouting operations for stabilisation reasons include also the filling of holes or cracks with grouting without or with very little pressure.