Experimental Verification of Concrete Elements Strengthened with UHPFRC

Čítek, David; Vítek, Jan L.; Coufal, Robert; Čítek, Adam; Kryštov, Martin; Kudrnáčová, Lucie

doi:10.21838/uhpc.9716

Cited by 3 publications

(3 citation statements)

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“…The individual experiments showed the efficiency of strengthening under different modes of loading. The performance in bending was described in earlier papers [1], [2], [3]. The efficiency of the strengthening in punching and of the strengthening of columns is briefly mentioned in this paper.…”

Section: Discussionmentioning

confidence: 97%

“…1 and 2. Similarly as in the bending tests [1], [2], [3], the reinforced concrete slabs were strengthened by the UHPC layer cast on the top surface of the slab. Two alternatives of strengthening were investigated.…”

Section: Strengthening Of Floors In Buildingsmentioning

confidence: 99%

“…UHPC layer added to the surface of an existing structure can provide a very powerful tool increasing the load carrying capacity of a structural element. The paper applies the knowledge gained from an extensive experimental program [1], [2], [3] and provides a basic information on application of UHPC for strengthening of concrete structures.…”

Section: Introductionmentioning

confidence: 99%

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Strengthening of Concrete Structures Using UHPC

Vítek

Boháček

Coufal

et al. 2022

SSP

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UHPC (ultra-high performance concrete) is an excellent material applicable also for strengthening of existing structures. Recently published papers were focused mainly on the behaviour of strengthened slabs subjected to bending, in this paper, experiments on punching and on strengthening of columns are mentioned. Strengthening of bridge decks requires a special composition of UHPC with high fibre contents and with the ability of casting in the slope. The appropriate mix for UHPC was developed within the research project. The experience gained from the extensive experimental program resulted in development of rules for strengthening of existing structures using UHPC, which follow the European codes and Czech recommendations for design of structures made of UHPC.

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Section: Discussionmentioning

confidence: 97%

Section: Strengthening Of Floors In Buildingsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Strengthening of Concrete Structures Using UHPC

Vítek

Boháček

Coufal

et al. 2022

SSP

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Strengthening of structures with UHPC – experiments and experience from application

Vítek,

Vráblík,

Coufal

2024

Beton und Stahlbetonbau

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UHPC has been developed in the Czech republic for about 15 years. The paper shows some of the new footbridges with the deck made of UHPC and then focuses on repair and strengthening of existing structures. Extensive experimental work was carried out as a basis for applications. Different loading situations were examined so that the structural performance in serviceability and in ultimate limit states was investigated. Experience from the construction of structures made of UHPC, from extensive experimental campaign, and from literature resulted in development of the Technical conditions for production of UHPC, design and execution and for reconstruction of structures with UHPC, which were approved by the Ministry of Transport in 2024. The document provides a possibility to apply UHPC also in structures of the transport infrastructure. Finally, example of application of UHPC in repair of a heavily loaded road bridge is introduced. Now, the fourth stage of the repair is under construction. Experience from earlier stages led to minor modifications of the original technology.

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