Autarkic aggregate supply with recycled tunnel spoil at the Brenner Base Tunnel

Murr, Roland; Cordes, Tobias; Hofmann, M; Bergmeister, Konrad

doi:10.1201/9780429424441-52

Cited by 5 publications

(1 citation statement)

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“…In summary, the fixed plant offers a suitable product for concrete, if the different size fractions obtained in the plant are mixed appropriately [14,67]. Several studies have explored the feasibility of recycling TEM and utilizing it as aggregates in structural concrete, shotcrete, and tunnel lining concrete, provided rock properties and processing methods are appropriately evaluated [37,[60][61][62][63][64][65]. Extensive laboratory and field testing has demonstrated the viability of using recycled TEM aggregates from various tunneling projects, such as the Götschka Tunnel, Koralm Tunnel, Brenner Base Tunnel, Torrent-La Thuile Tunnel, the Turin underground railway, Gotthard Tunnel, and Loetschberg Base Tunnel, and the Omegna Tunnel effectively recycled spoil as concrete aggregates [8,14,17,66,67].…”

Section: Reuse As Aggregates In Concrete Productionmentioning

confidence: 99%

The Potential of Recycling and Reusing Waste Materials in Underground Construction: A Review of Sustainable Practices and Challenges

Sharghi,

Jeong

2024

Sustainability

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Underground infrastructure projects pose significant environmental risks due to resource consumption, ground stability issues, and potential ecological damage. This review explores sustainable practices for mitigating these impacts throughout the lifecycle of underground construction projects, focusing on recycling and reusing excavated tunnel materials. This review systematically analyzed a wide array of sustainable practices, including on-site reuse of excavated tunnel material as backfill, grouting, soil conditioning, and concrete production. Off-site reuses explored are road bases, refilling works, value-added materials, like aggregates and construction products, vegetation reclamation, and landscaping. Opportunities to recover and repurpose tunnel components like temporary support structures, known as “false linings”, are also reviewed. Furthermore, the potential for utilizing industrial and construction wastes in underground works are explored, such as for thermal insulation, fire protection, grouting, and tunnel lining. Incorporating green materials and energy-efficient methods in areas like grouting, lighting, and lining are also discussed. Through comprehensive analysis of numerous case studies, this review demonstrates that with optimized planning, treatment techniques, and end-use selection informed by material characterization, sustainable practices can significantly reduce the environmental footprint of underground infrastructure. However, certain approaches require further refinement and standardization, particularly in areas like the consistent assessment of recycled material properties and the development of standardized guidelines for their use in various applications. These practices contribute to broader sustainability goals by reducing resource consumption, minimizing waste generation, and promoting the use of recycled and green materials. Achieving coordinated multi-stakeholder adoption, including collaboration between contractors, suppliers, regulatory bodies, and research institutions, is crucial for maximizing the impact of these practices and accelerating the transition towards a more sustainable underground construction industry.

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Section: Reuse As Aggregates In Concrete Productionmentioning

confidence: 99%

The Potential of Recycling and Reusing Waste Materials in Underground Construction: A Review of Sustainable Practices and Challenges

Sharghi,

Jeong

2024

Sustainability

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Tunnel spoil recycling for concrete production at the Brenner Base tunnel in Austria

Voit

Murr²,

Cordes³

et al. 2020

Structural Concrete

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In the construction of major tunnel structures, large quantities of rock material are generated by the excavation of, for example, tunnels or caverns out of the in situ rock mass. Excavated rock material was often considered as undesired by‐product and from a legal point of view as waste in the past. Nevertheless, there is the need for construction material at the tunnel construction site directly where the rock material is generated. Broad scientific research is conducted concerning the utilization possibilities and optimization of recycling implementation. This article deals with the recycling of tunnel excavation material substituting conventional aggregate for concrete by the example of the Brenner Base Tunnel in Austria. Concrete design, material processing, and concrete production were affected by challenging geological bedrock conditions. This article presents the scientific approach, experimental setup, verification, and the realization on the construction site. The way from preliminary mixing designs to the final product is illustrated for two main rock types: calcareous schists, which successfully were recycled and processed as aggregate for shotcrete, structural and inner lining concrete; and quartz phyllite with unsuitable rock properties for concrete production due to intense foliation and mica‐rich mineral composition. The results are demonstrating the need for detailed examination of rock and concrete properties regarding the usability of tunnel excavation material.

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The Beauty of Simplicity and Recyclability

Bergmeister

Taferner²

2023

Lecture Notes in Civil Engineering

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Autarkic aggregate supply with recycled tunnel spoil at the Brenner Base Tunnel

Cited by 5 publications

References 0 publications

The Potential of Recycling and Reusing Waste Materials in Underground Construction: A Review of Sustainable Practices and Challenges

The Potential of Recycling and Reusing Waste Materials in Underground Construction: A Review of Sustainable Practices and Challenges

Tunnel spoil recycling for concrete production at the Brenner Base tunnel in Austria

The Beauty of Simplicity and Recyclability

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