Development of standards for functional requirements at underground facilities with respect to the chemical environment
Constructions in underground space represent interventions in the surrounding environments. This concerns mainly the hydrology but also other aspects such as the release of ion species from the host rock during and after excavation. During and after constructions, which go hand in hand with the excavations, further factors needs to be considered, which concerns mainly the new construction materials brought into the underground space:
*Functionality of the new materials
* Interaction of the new materials with subsurface water
* Durability of the new materials
All three factors are strongly influenced by the underground environment with the underground water constituting the transport media between the environment and the materials. The construction materials are mostly either cementitious or reinforcement for shotcrete and concrete parts (either as mesh, bars or fibers) as well as steel for rock bolts.
By means of integrated activities and studies on underground hydrochemistry, cement-based materials and corrosion processes, the general objective of the project proposal is to further develop standards to meet functional requirements at underground facilities with respect to the chemical environment in terms of groundwater chemistry and vault atmosphere composition.
Furthermore the project aims to provide a basis for constructing safer tunnels with cost-effective maintenance.
This page is only available in english
The project is closed: 31/12/2017