Strengthening of Reinforced Concrete Structures with Carbon Reinforced Concrete—Possibilities and Challenges

Publikation: Beitrag in FachzeitschriftForschungsartikelBeigetragenBegutachtung

Beitragende

  • Juliane Wagner - , CARBOCON GmbH (Autor:in)
  • Carolin Würgau - , Hochschule für Technik, Wirtschaft und Kultur Leipzig (HTWK) (Autor:in)
  • Alexander Schumann - , CARBOCON GmbH (Autor:in)
  • Elisabeth Schütze - , CARBOCON GmbH (Autor:in)
  • Daniel Ehlig - , Hochschule für Technik, Wirtschaft und Kultur Leipzig (HTWK) (Autor:in)
  • Lutz Nietner - , Hochschule für Technik, Wirtschaft und Kultur Leipzig (HTWK) (Autor:in)
  • Manfred Curbach - , Professur für Massivbau (Autor:in)

Abstract

The strengthening of existing reinforced concrete structures (RC) with carbon reinforced concrete (CRC) has a high potential to save resources and to increase the lifespan of the whole strengthened structure immensely. However, when strengthening structures with CRC, in some cases, failure due to concrete cover separation is detected, leading to the fact that the potential of the carbon reinforcement cannot be exploited. The prediction and prevention of this type of failure is the subject of current research. In this paper, a strut-and-tie-model is presented for calculating a critical tensile force leading to failure due to concrete cover separation. Additionally, possible methods to avoid that kind of failure are suggested. One of these is doweling the ends of the strengthening layer. This paper presents the first experiments to test this method, which show that doweling the strengthening layer leads to much higher failure loads compared to a structure without doweling. However, further investigations have to be examined to verify these first results.

Details

OriginalspracheEnglisch
Seiten (von - bis)400-426
Seitenumfang27
FachzeitschriftCivilEng
Jahrgang3
Ausgabenummer2
PublikationsstatusVeröffentlicht - 13 Mai 2022
Peer-Review-StatusJa

Externe IDs

ORCID /0000-0002-1596-7164/work/142255669

Schlagworte

Schlagwörter

  • bending tests, carbon reinforced concrete, carbon reinforcement, concrete cover separation, CRC, FRP, strengthening, textile reinforced concrete

Bibliotheksschlagworte