The Structural Behavior of Heat-Damaged Flat Slabs with Openings of Different Sizes and Locations

Alnemrawi, Bara’a R.; Al-Rousan, Rajai Z.; Ababneh, Ayman N.

doi:10.1007/s13369-023-08411-6

Cited by 7 publications

(2 citation statements)

References 39 publications

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“…In addition, there was a slight increase in PF stiffness (0.6-0.9%) and a considerable enhancement in the stiffness of PF (from 0.3% to 0.6%), while the difference between the opening ratio ranged from 6.28% to 8%. Finally, the opening ratio negatively affected the initial stiffness [37], as the stiffness was reduced by 11% when the opening ratio was 0.5%, to 83% when the opening ratio was 24.5%.…”

Section: Yielding Stiffnessmentioning

confidence: 97%

NLFEA of the Behavior of Polypropylene-Fiber-Reinforced Concrete Slabs with Square Opening

Al-Rousan,

Alnemrawi

2024

Buildings

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The bending behavior of one-war reinforced concrete (RC) slabs with polypropylene fibers (PF) was examined in this study under the effect of different opening ratios using the nonlinear finite element analysis (NLFEA) method. The investigated parameters include the effect of different square opening ratios between 0 and 24% and PF volume percentages between 0 and 1% with 0.1% increments. The objectives of this study were fulfilled using 88 NLFEA models with different combinations of the studied parameters, including 11 control slabs without openings. The slab’s behavior was studied focusing on different structural performance characteristics, such as ductility, using energy-based and deflection-based approaches, stiffness (initial and yielding), cracking, and ultimate load strength. In addition, other structural performance parameters were considered, such as the crack opening, failure modes, and strain values, which were recorded for all specimens during the loading history. Moreover, the load-carrying capacity of the slabs was compared, looking at the NLFEA method’s results and the theoretical prediction results based on the sectional analysis method. However, it was observed that the inclusion of PFs of different percentages has a superior effect on the behavior of RC slabs with small openings (less than 2% opening ratio) compared to the acceptable improvements obtained for sabs with larger opening sizes. Consequently, PF could be utilized as a replacement for conventional steel rebars for RC slabs with small openings. In addition, increasing the PF percentage increases the resulting crack-opening value at failure due to the provided stabilization effect, in addition to increasing the system’s ability to sustain loads.

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Section: Yielding Stiffnessmentioning

confidence: 97%

NLFEA of the Behavior of Polypropylene-Fiber-Reinforced Concrete Slabs with Square Opening

Al-Rousan,

Alnemrawi

2024

Buildings

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“…When the overlay is constructed at the top of the bridge deck, the overlay encounters drying shrinkage, which begins just after the moist curing is completed. The substrate beneath the bridge deck constrains the shrinkage of the overlay, leading to the development of stresses within the bond [ [11] , [12] , [13] ]. Standardly, the bridge deck can be made of precast and cast-in-place concrete parts that are connected, interact, and develop their full strength before the placing of an overlaying layer where the possibility of drying shrinkage is almost avoided.…”

Section: Introductionmentioning

confidence: 99%

Influence of overlay strength degradation on bond stresses of bridge deck system

Al-Rousan,

Alnemrawi

2024

Heliyon

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The role of CFRP strengthening in improving the punching shear behavior of heat-damaged flat slabs with openings of different sizes and locations

Alnemrawi,

Al-Rousan,

Ababneh

2024

Engineering Failure Analysis

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The Structural Behavior of Heat-Damaged Flat Slabs with Openings of Different Sizes and Locations

Cited by 7 publications

References 39 publications

NLFEA of the Behavior of Polypropylene-Fiber-Reinforced Concrete Slabs with Square Opening

NLFEA of the Behavior of Polypropylene-Fiber-Reinforced Concrete Slabs with Square Opening

Influence of overlay strength degradation on bond stresses of bridge deck system

The role of CFRP strengthening in improving the punching shear behavior of heat-damaged flat slabs with openings of different sizes and locations

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