Sustainable Exploitation of Tunnel Excavation Material

The construction industry accounts for roughly a third of the greenhouse effect, requires about 40 % of the global energy supply and produces a volume of waste exceeding 50 %. Ensuring that tunnel excavation material is utilized as completely as possible in this connection represents an important contribution to forming a future-oriented economic system by increasing efficiency and effectiveness [1].

1 Introduction

Unimpeded access to deposits of sand, gravel and industrial minerals will become increasingly more difficult in future on account of manifold surface utilization and more restrictive environmental considerations (Fig. 1). The excavated material accruing especially during tunnelling projects represents a considerable flow of waste; at the same time, frequently businesses are established in the direct proximity of tunnel projects that produce mineral raw materials. Seen in lithographic terms these raw materials correspond with the material excavated during the tunnel drive....

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