Experimental investigation on the effect of impact loading on behavior of post- tensioned concrete slabs

Rawi, Youmn Al; Temsah, Yehia; Baalbaki, Oussama; Jahami, Ali; Darwiche, Mohamad

doi:10.1016/j.jobe.2020.101207

Cited by 16 publications

(6 citation statements)

References 5 publications

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“…Regarding the study of post-tensioned concrete slabs, most published research focuses on a physical analysis of those elements, studying, for instance, the impact of loads on the structure. In this sense, research such as that of Youmn Al Rawi et al stands out, as it analyzed the impact of loads produced by factors, such as rock fall during construction, comparing reinforced concrete slabs (RC) versus post-tensioned (PT) slabs [5]. Similar publications were presented by A. Jahami et al, which studied the load's impact on rehabilitated concrete slabs [6].…”

Section: State Of the Artmentioning

confidence: 99%

The Use of De-Icing Salts in Post-Tensioned Concrete Slabs and Their Effects on the Life of the Structure

Alonso

Moraleda²,

Alberti

et al. 2023

Applied Sciences

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This article expounds on the problem of the use of de-icing salts in the corrosion of steel rebars in bridge decks and their effect on post-tensioning elements. In particular, this paper focuses this problem on structures affected by an aggregate–alkali reaction and without any waterproof treatment using the example of one structure whose repair was carried out in 2020. In this structure, the internal stresses due to the aggregate–alkali reaction caused longitudinal cracks in the upper face of the deck, through which the penetration of chloride ions was concentrated, causing, finally, the brittle fracture of the steel bars and the corrosion of the prestressing elements. This article also explains some conclusions about the most probable mechanisms that resulted in the brittle fracture of the steel bars due to the extraordinary and unexpected nature of this phenomenon.

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Section: State Of the Artmentioning

confidence: 99%

The Use of De-Icing Salts in Post-Tensioned Concrete Slabs and Their Effects on the Life of the Structure

Alonso

Moraleda²,

Alberti

et al. 2023

Applied Sciences

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“…Six et al [4] tested the bending behaviour of three-span unbonded post-tensioned elements at a span to depth ratio of 45. Rawi et al [5] have compared the behaviour of prestressed slabs with traditionally reinforced concrete slabs under low-velocity impacts. Kim et al [6] conducted tests on full-size specimens of PSC bridge girders to obtain friction characteristics of post-tensioning tendons.…”

Section: Introductionmentioning

confidence: 99%

Experimental and Numerical Research of Post-Tensioned Concrete Beams

Jancy,

Stolarski,

Zychowicz

2023

Materials

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The purpose of this paper is to present a new approach for the modelling of post-tensioned beams with calibration of the FE model to experimental results until the load capacity and post-critical state are reached. Two post-tensioned beams with different nonlinear tendon layouts were analysed. Material testing for concrete, reinforcing steel and prestressing steel was performed prior to the experimental testing of the beams. The Hypermesh program was used to define the geometry of the spatial arrangement of the finite elements of the beams. The Abaqus/Explicit solver was used for numerical analysis. The concrete damage plasticity model was used to describe the behaviour of concrete with different laws of elastic–plastic stress–strain evolution for compression and tension. Elastic-hardening plastic constitutive models were used to describe the behaviour of steel components. An effective approach to modelling the load was developed, supported by the use of Rayleigh mass damping in an explicit procedure. The presented model approach ensures good agreement between numerical and experimental results. The crack patterns obtained in concrete reflect the actual behaviour of structural elements at every loading stage. Random imperfections found during experimental studies on the results of numerical analyses were also discussed.

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“…The behaviour of the slab, when subjected to impact loading has been investigated by several researchers [3][4][5][6][7][8][9][10]. Youmn Al Rawi et al [11] investigated the behaviour of post-tensioned concrete slabs under the effect of impact load. For the purpose of analyzing the damage behaviour, two different grades of post-tensioned concrete slabs were tested at a height of 20 m and a weight of 605 kg.…”

Section: Introductionmentioning

confidence: 99%

Damage identification in concrete under impact loading at varying temperatures using voltage strain relations technique: an experimental and numerical study

singh

Dev

Pal

2023

Mater. Res. Express

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Impact-loaded concrete structures cause severe and rapid damage, resulting in significant property and human life loss. As the temperature rises, the damage caused by impact loading becomes increasingly severe. Concrete structures need structural health monitoring (SHM) to avoid these damage and loss. In this study the voltage relation technique were used to identify the damage state of concrete under impact loads at various temperatures conditions as experimentally and numerically. For this purpose, an experimental study was performed on concrete cube specimens in which different piezo configurations (surface bonded, non-bonded, and jacketed) were installed to acquire the voltage data. Before applying an impact load to the top surface of concrete specimen, it was preheated at 50 oC, 100 oC, and 150 oC to provide the temperature effect, and then a free-falling iron ball was dropped from 3 m heights on the top of the specimens. Furthermore, finite element analysis has been carried out to validate the experimental results with analytical results. The experimental results shows that the voltage relation technique are well capable in detecting the damage in concrete under the temperature and impact loading conditions. All the piezo sensors configurations are capable in finding the damage. Jacketed sensors are more efficient in health assessment of concrete in terms of voltage relations. In terms of strain values, the analytical results are in good agreement with the experimental results.

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Experimental investigation on the effect of impact loading on behavior of post- tensioned concrete slabs

Cited by 16 publications

References 5 publications

The Use of De-Icing Salts in Post-Tensioned Concrete Slabs and Their Effects on the Life of the Structure

The Use of De-Icing Salts in Post-Tensioned Concrete Slabs and Their Effects on the Life of the Structure

Experimental and Numerical Research of Post-Tensioned Concrete Beams

Damage identification in concrete under impact loading at varying temperatures using voltage strain relations technique: an experimental and numerical study

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