Behavior of bonded and unbonded prestressed normal and high strength concrete beams

Hussien, O.F.; Elafandy, Tamer; Abdelrahman, Amr; Baky, S.A. Abdel; Nasr, El-Sayed A.R.

doi:10.1016/j.hbrcj.2012.10.008

Cited by 33 publications

(21 citation statements)

References 1 publication

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“…Secondly, according to Jenn-Chuan Chern et al (1992), prestressed beams could experience three stages under loads and the transitions between stages were denoted by strain limits. Thus, understanding strain activations of beam elements would help to unravel the nature of structure behaviors.…”

Section: A Cmentioning

confidence: 99%

Investigation of Strain Evolutions in Prestressed Reinforced Concrete Beams Based on Nonlinear Finite Element Analyses Considering Concrete Plasticity and Concrete Damaged Plasticity

Pham

Hong

2021

Journal of Asian Architecture and Building Engineering

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Section: A Cmentioning

confidence: 99%

Investigation of Strain Evolutions in Prestressed Reinforced Concrete Beams Based on Nonlinear Finite Element Analyses Considering Concrete Plasticity and Concrete Damaged Plasticity

Pham

Hong

2021

Journal of Asian Architecture and Building Engineering

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“…1 Sample name Ductility (1) AU/AY Ki (2) Ku (3) 2. The crack pattern for partially prestressed concrete beams is distributed along their entire length and has a small crack width and high number due to the grade of compressive strength of the concrete beams.…”

Section: Modes Of Failure and Cracking Patternmentioning

confidence: 99%

“…Omnia [1], studied the behavior of fully and partially prestressed concrete beams and concluded that presence of the prestressing force delays the concrete cracking and increases the initial stiffness. Hussien et al [2], studied the behavior of bonded and unbonded prestressed normal and high strength concrete beams and concluded that increasing the nominal compressive strength for bonded prestressed beams led to a slight increase in the ultimate and cracking loads. Ismail [3], studied the behavior of statically determinate prestressed concrete beams subject to fire and concluded that the partially prestressed concrete beams with concrete cover equal to 25 mm have higher resistance to fire exposure than that of fully prestressed concrete beam in terms of ultimate capacity and ductility.…”

Section: Introductionmentioning

confidence: 99%

Behavior of corroded bonded partially prestressed concrete beams

et al. 2018

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Prestressed concrete is widely used in the construction industry in buildings. And corrosion of reinforcing steel is one of the most important and prevalent mechanisms of deterioration for concrete structures. Consequently the capacity of post-tension elements decreased after exposure to corrosion. This study presents results of the experimental investigation of the performance and the behavior of partially prestressed beams, with 40 and 80 MPa compressive strength exposed to corrosion. The experimental program of this study consisted of six partially prestressed beams with overall dimensions equal to 150 Â 400 Â 4500 mm. The variables were considered in terms of concrete compressive strength, and corrosion location effect. The mode of failure, and strain of steel reinforcement, cracking, yield, ultimate load and the corresponding deflection of each beam, and crack width and distribution were recorded. The results showed that the partially prestressed beam with 80 MPa compressive strength has higher resistance to corrosion exposure than that of partially prestressed concrete beam with 40 MPa compressive strength. Not big difference in deterioration against fully/partially corrosion exposure found between partially prestressed beams at the same compressive strength. The most of deterioration incident in partially prestressed beam acts on non prestressed steel reinforcement. Because the bonded tendons are less likely to corrode, cement grout and duct act as a barrier to moisture and chloride penetration, especially plastic duct without splices and connections. The theoretical analysis based on strain compatibility and force equilibrium gave a good prediction of the deformational behavior for high/normal partially prestressed beams.

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“…Also PSC beams with non-prestressed reinforcement showed better ductility than beams without them. (Hussien et al 2012). Advantage of post tensioning can still be improved by adding fibers.…”

Section: Fibers In Prestressed Concrete (Psc)mentioning

confidence: 99%

Fibers in Structural Concrete-a Critical Review

U.P.B.C.Sekhar¹,

Vengadeshwari²,

Reddy³

2016

IJMTER

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In this paper the recent progress and achievement in the application of fibers in concrete has been intensively investigated. Most of the conclusions on fibers are arrived at by conducting experiments on plain and reinforced concrete. The significance of this paper is in the collation of the research works reported to date in the area of fibers/hybrid fibers on plain, reinforced and prestressed concrete. Research efforts on the behavior of fiber reinforced high strength concrete in the area of prestressed concrete structures are limited. If the addition of fibers proves to improve the ductility and post crack strength of prestressed concrete, it would be a boon to the construction industry.

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Behavior of bonded and unbonded prestressed normal and high strength concrete beams

Cited by 33 publications

References 1 publication

Investigation of Strain Evolutions in Prestressed Reinforced Concrete Beams Based on Nonlinear Finite Element Analyses Considering Concrete Plasticity and Concrete Damaged Plasticity

Investigation of Strain Evolutions in Prestressed Reinforced Concrete Beams Based on Nonlinear Finite Element Analyses Considering Concrete Plasticity and Concrete Damaged Plasticity

Behavior of corroded bonded partially prestressed concrete beams

Fibers in Structural Concrete-a Critical Review

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