Influence of polypropylene fibers on the flexural behavior of reinforced concrete slabs with different opening shapes and sizes

Al-Rousan, Rajai Z.

doi:10.1002/suco.201600222

Cited by 37 publications

(10 citation statements)

References 20 publications

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“…Likewise, the adding ratio of 0.50% polypropylene fibers showed slightly less than double the load capacity of specimens free from fibers. Enhancing the load capacity of concrete slab specimens containing fibers as presented in the current study agreed with numerous previous studies [37], [38], [39], [40], [41]. Therefore, the effect of fibers added to pervious concrete may be restricted or related by several factors, such as the random distribution of fibers within the concrete matrix.…”

Section: Figure 9 Maximum Deflection Diagram Of the Control Pp And Wr...supporting

confidence: 91%

Improving the mechanical behavior of pervious concrete using polypropylene and waste rope fibers

Alkraway,

Shereen,

Salah Nasr

et al. 2024

QJES

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Urbanization has led to the damage of infrastructure due to floods and water accumulation on roads and sidewalks. To address this problem, pervious concrete was designed to drain water smoothly. However, pervious concrete has certain drawbacks, such as brittleness and poor tensile strength. To overcome these shortcomings, it is reinforced with fiber. Polypropylene fibers are commonly used for this purpose. On the other hand, managing waste plastic is a major problem as it has a significant environmental impact and requires large areas for landfills. Waste rope fibers (WRF) are among these wastes. There have been very limited investigations on the use of WRF in pervious concrete. Therefore, this study aims to investigate the effect of polypropylene (PP) fibers and waste rope fibers (WRF) on the mechanical and structural properties of pervious concrete. PP and WRF fibers were added in proportions of 0.25%, 0.5%, and 0.75% by volume of concrete. A range of tests (compressive strength, tensile strength, density, permeability, load-deflection behavior, and ductility) were conducted to evaluate the resulting concrete. The results indicated that although the permeability was decreased by adding fibers, the fibers significantly improved the mechanical and structural properties of pervious concrete. The highest values for compressive strength, splitting tensile strength, and ultimate load were 83.4%, 72.4%, and 89.62% for PP fibers-based mixtures, while they were 49.9%, 41.9%, and 102.83% for mixtures made with WRF at an addition rate of 0.5% for both types of fibers. The results also demonstrated that the existence of fibers improved the ductility of the concrete, which means that WRF can be used successfully in producing eco-friendly pervious concrete with better performance than the control specimen.

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Section: Figure 9 Maximum Deflection Diagram Of the Control Pp And Wr...supporting

confidence: 91%

Improving the mechanical behavior of pervious concrete using polypropylene and waste rope fibers

Alkraway,

Shereen,

Salah Nasr

et al. 2024

QJES

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“…Simply supported one-way RC slabs of (1.10 × 0.50 × 0.07) m 3 dimensions for the length, width, and height, respectively, were constructed and tested by Al-Rousan [34], with the test conducted as illustrated in Figure 2. The investigated parameters included in the experiment are illustrated in Figure 3, where (f) stands for PF volume fraction, for which four percentages were used (0, 0.3, 0.6, and 0.9%).…”

Section: Experimental Work Reviewmentioning

confidence: 99%

“…It was revealed that major improvements were recorded in ductility, stress redistribution capacity, and post-cracking propagation. The flexural performance of one-way slabs strengthened when the PF of different percentages was studied (0, 0.3, 0.6, and 0.9) % with square and circular openings by Al-Rousan [34].…”

Section: Introductionmentioning

confidence: 99%

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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“…For instance, punching shear failure can occur in a conical shape, which causes a slab to dramatically collapse progressively after the induced load is redistributed, and consequent overloading the various structural elements within the system [ 2 , 3 ]. Also, several factors influence the flexural performance of RC slabs, including structural element size, cement, aggregate, moisture level, and ambient environmental conditions [ [4] , [5] , [6] ].…”

Section: Introductionmentioning

confidence: 99%

Structural retrofitting of RC slabs using bamboo fibre laminate: Flexural performance and crack patterns

Awoyera,

Althoey,

Bahrami

et al. 2024

Heliyon

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Influence of polypropylene fibers on the flexural behavior of reinforced concrete slabs with different opening shapes and sizes

Cited by 37 publications

References 20 publications

Improving the mechanical behavior of pervious concrete using polypropylene and waste rope fibers

Improving the mechanical behavior of pervious concrete using polypropylene and waste rope fibers

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

Structural retrofitting of RC slabs using bamboo fibre laminate: Flexural performance and crack patterns

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