Publication detail

Rehabilitation and Reinforcement of Ferroconcrete Walls with Reinforced Pilasters

NOVOTNÝ, M. VŠETEČKA, J.

Original Title

Rehabilitation and Reinforcement of Ferroconcrete Walls with Reinforced Pilasters

Type

conference paper

Language

English

Original Abstract

The article is focused on renovation, rehabilitation and reinforcement of high ferroconcrete walls. It tries to point out the experience of experts in solving problems with high ferroconcrete walls. During a revitalization of buildings of a military accommodation facility in Brno with basement and connecting corridors of an average height of 25 m, degradation of concrete, locally missing reinforcement and poor-quality concrete mixtures, the strength class of which varied between C8/10-C10/12, were found in these corridors. Along the height of the pilasters, the structure also showed the signs of torsion and it was assessed the structure also needs to be strengthened/reinforced besides the rehabilitation. The reinforcement structure had to be built from the very foundation of the building, it is linked to the existing wall and has three cascade levels. For the first two parts, a construction pit has been created with a Berliner wall, and these parts reach below the modified terrain, are reinforced with concrete reinforcement according to the structural project, concreted with cast concrete, and the foundation is reinforced with deep-based construction. The second and the third parts of the cascade stretch from the modified terrain between the pilasters to the top and they are made with a two-stage shotcrete technique, the first one has inbuilt concrete reinforcement with welded wire mesh and the second one composite mesh anchored by helical reinforcement without static effect. In terms of the damage of the structure, carbon fibre wrapping technique or grouting of the existing ferroconcrete structure was also used in the affected areas. The article also includes photo documentation of the repairs and structural damage prior to them.

Keywords

Rehabilitation; Reinforcement; Ferroconcrete Wall; Reinforced Pilasters;

Authors

NOVOTNÝ, M.; VŠETEČKA, J.

Released

25. 2. 2020

Publisher

Institute of Physics Publishing

ISBN

1757-8981

Periodical

IOP Conference Series: Materials Science and Engineering

Year of study

728

Number

1

State

United Kingdom of Great Britain and Northern Ireland

Pages from

1

Pages to

8

Pages count

8

URL

https://iopscience-iop-org.ezproxy.lib.vutbr.cz/article/10.1088/1757-899X/728/1/012011/pdf

BibTex

@inproceedings{BUT169597,
  author="Michal {Novotný} and Jan {Všetečka}",
  title="Rehabilitation and Reinforcement of Ferroconcrete Walls with Reinforced Pilasters",
  booktitle="Building Defects 2019 (11th International Conference Building Defects)",
  year="2020",
  journal="IOP Conference Series: Materials Science and Engineering",
  volume="728",
  number="1",
  pages="1--8",
  publisher="Institute of Physics Publishing",
  doi="10.1088/1757-899X/728/1/012011",
  issn="1757-8981",
  url="https://iopscience-iop-org.ezproxy.lib.vutbr.cz/article/10.1088/1757-899X/728/1/012011/pdf"
}