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Fastening application in concrete using recycled tunnel excavation material
Author(s) -
Dengg Fabian,
Zeman Oliver,
Voit Klaus,
Bergmeister Konrad
Publication year - 2018
Publication title -
structural concrete
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.912
H-Index - 34
eISSN - 1751-7648
pISSN - 1464-4177
DOI - 10.1002/suco.201600200
Subject(s) - excavation , aggregate (composite) , context (archaeology) , geotechnical engineering , engineering , civil engineering , geology , materials science , composite material , paleontology
The demand for construction materials at tunnel construction sites is naturally very high. Thus, tunnel excavation material is increasingly used as a substitute for conventional mineral aggregates. Excavation material is not a standard product in terms of geometric, physical, and chemical properties of the rock as its quality is changes during tunnel driving depending on the geology and excavation method. By using this material as aggregate for concrete, the concrete obtains its characteristic properties. Certain concrete properties do not only influence the construction material itself but also fasten the elements that are assembled to the structural concrete. In this case, experimental validation of the usability of this special concrete for postinstalled anchorages and the effectiveness of different fastening systems are required. Therefore, investigations using various postinstalled anchor systems in different inner shell concrete types made of recycled aggregate (in this context, Bündner schist from the Brenner Base Tunnel) were performed in this study to obtain an assessment of the applicability of these systems in concrete with aggregate made of tunnel excavation material.