Flexural Behavior of Reinforced Concrete Beams Strengthened with Composite Carbon Fiber-Reinforced Polymer System

Fernández-Dávila, Víctor I.; Gutiérrez, María M.; Samaniego, Juan D.; Bazán, Jorge L.; Santa-Cruz, Sandra C.

doi:10.14359/51734346

Cited by 1 publication

(1 citation statement)

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“…Stiffness is the line's slope that connects the origin of the load-lateral displacement curves and a point corresponding to a deflection of L/250 (L is the beam's span length) [33]. On the other hand, the stiffness of each phase was calculated as the ratio of the maximum load and its corresponding displacement k i [34]. Due to the section in this study is not prismatic therefore it can be assumed the calculation of stiffness for the critical section (i.e., the void has the parametric maximum void at midspan).…”

Section: Average Flexural Stiffness (Afs)mentioning

confidence: 99%

Flexural Ductility, Stiffness, and Toughness of New Voided Reinforced Concrete One-Way Slab Using Waste Plastic Bottles

Rajab

Ali

Mahmoud

et al. 2022

Journal of Engineering

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The enhancement of concrete structures’ performance can easily be achieved. However, the main challenge is how to achieve this performance with respect to the economy and sustainability. The aim of this research is to examine the flexural strength, ductility, stiffness, and toughness of RC hollow one-way slabs that are voided by plastic bottles. A new technique of hollowing has been used in this work, where a steel mesh tube was prepared previously and filled manually with blank waste plastic bottles to form a light tube. This technique has some advantages including ease of installation and adequate bonding for the main steel reinforcements. Five RC one-way slabs were cast and tested in the lab to investigate some variables: the presence of hollow, the ratio of reinforcement, and slab thickness. Briefly, a new technique for voids enhances the flexural behavior with less concrete and weight. The ductility is increased by about 100% for the voided specimens for the same section’s thickness. Also, the rotation in supports had been reduced by about 30% when the thickness of voided slab was increased by about 15%.

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Section: Average Flexural Stiffness (Afs)mentioning

confidence: 99%