You are currently viewing a new version of our website. To view the old version click .

Infrastructures, Volume 8, Issue 1

January 2023 - 14 articles

Cover Story: Non-destructive testing based on elastic wave propagation is well established for solids. In the field of infrastructure, there is great potential for applying these methods to base courses of granular material. The detection of inhomogeneous compaction makes it possible to optimize construction and maintenance processes, e.g., for railway superstructures. Using sand as an example, the presented study shows that there is a nonlinear correlation between the stress state in granular material and the propagation velocity of ultrasound. The laboratory tests were carried out using a servo-hydraulic press and a measurement box. In follow-up investigations, it is planned to further develop the test equipment for coarse-grained materials such as railway ballast. View this paper
  • Issues are regarded as officially published after their release is announced to the table of contents alert mailing list .
  • You may sign up for email alerts to receive table of contents of newly released issues.
  • PDF is the official format for papers published in both, html and pdf forms. To view the papers in pdf format, click on the "PDF Full-text" link, and use the free Adobe Reader to open them.

Articles (14)

  • Article
  • Open Access
1 Citations
2,751 Views
13 Pages

Analysis of the Stressed State of Sand-Soil Using Ultrasound

  • Lukas Benedikt Schumacher,
  • Mykola Sysyn,
  • Ulf Gerber and
  • Szabolcs Fischer

The maintenance of the ballast substructure is an important cost-driver for railway systems. The problem is that today’s condition monitoring methods are insufficient to collect detailed data on the compaction and stress allocation inside the b...

  • Article
  • Open Access
13 Citations
3,495 Views
20 Pages

The presence of underground voids within a failure zone usually results in a reduction in the bearing capacity of footings. This paper presents results for the ultimate bearing capacity ratio, qu/γB, of a strip footing on top of a sand layer ov...

  • Article
  • Open Access
5 Citations
3,288 Views
18 Pages

Numerical Investigation on Effect of Opening Ratio on Structural Performance of Reinforced Concrete Deep Beam Reinforced with CFRP Enhancements

  • Yasar Ameer Ali,
  • Lateef Najeh Assi,
  • Hussein Abas,
  • Hussein R. Taresh,
  • Canh N. Dang and
  • SeyedAli Ghahari

Reinforced concrete deep beams are a vital member of infrastructures such as bridges, shear walls, and foundation pile caps. Thousands of dollars and human lives are seriously threatened due to shear failure, which have developed in deep beams contai...

  • Article
  • Open Access
1 Citations
2,431 Views
16 Pages

Knowledge about the Origins of Uncertainties from the Pre-Project Phase of Road Projects

  • Rouzbeh Shabani,
  • Olav Torp,
  • Ole Jonny Klakegg and
  • Agnar Johansen

To succeed with projects, we need to understand and manage uncertainty. Uncertainties impact a project’s cost, time, and quality performance. The project’s front end is challenging for decision makers due to the high level of uncertainty....

of 2

Get Alerted

Add your email address to receive forthcoming issues of this journal.

XFacebookLinkedIn
Infrastructures - ISSN 2412-3811