Assessment of concrete shear resistance of lightweight SCC beams containing scoria aggregates

El-Sayed, Ahmed K.; Fares, Galal; Albidah, Abdulrahman S.; Alhozaimy, Abdulrahman M.; Al-Saawani, Mohammed A.; Al-Negheimish, Abdulaziz I.

doi:10.1016/j.jobe.2023.107591

Journal of Building Engineering

2023

DOI: 10.1016/j.jobe.2023.107591

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Assessment of concrete shear resistance of lightweight SCC beams containing scoria aggregates

Ahmed K. El-Sayed,

Galal Fares,

Abdulrahman S. Albidah

et al.

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2024

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Cited by 2 publications

References 35 publications

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Creep Coefficient for Self-Compacting Concrete (SCC)

SADIKU,

KAMBERI,

NAFEZI

2024

IJCESEN

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With the development of construction technology, self-compacting concrete hasstarted to be widely used in the construction of buildings. The specific properties of selfcompacting concrete have made it particularly useful for concreting the structuralelements of high-rise buildings. The strains characteristics of concrete are important toknow both in the initial stage of concreting and in the long process, in order to takemeasures to minimize their impact on cracking and reduction of structure elements.In this regard we have conducted an experiment to investigate shrinkage strains andcreep strains in reinforced concrete beams as well as the determination of the creepcoefficient. Given that the shrinkage and creep strains are together, it is necessary toseparate the creep strains from the shrinkage strains to determine the creep coefficient.For the realization of this separation, we have prepared the same samples which havebeen used for the determination of shrinkage strains and samples which have beeninserted into the mechanisms for the realization of adequate force for thedetermination of the creep strains.

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Creep Coefficient for Self-Compacting Concrete (SCC)

SADIKU,

KAMBERI,

NAFEZI

2024

IJCESEN

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Behavior of Lightweight Self-Compacting Concrete with Recycled Tire Steel Fibers

Alabdulkarim,

El-Sayed,

Alsaif

et al. 2024

Buildings

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The utilization of recycled materials in concrete technology has gained significant attention in recent years, promoting sustainability and resource conservation. This paper investigates the behavior of lightweight self-compacting concrete (LWSCC) with recycled tire steel fibers (RTSFs). The effects of RTSFs on the flowability of the composite material and its density were assessed. The mechanical properties of the developed material were examined and beam tests were performed, aiming to assess its feasibility for structural applications. The compressive and tensile strengths were determined to evaluate the mechanical properties of the developed concrete mixtures. The beam tests were conducted to assess the flexural behavior of the beam specimens. Three different steel fiber contents of 0, 0.5, and 1% volumetric fractions of concrete were used in this study. The test results indicate that incorporating the fibers did not negatively impact the flowability and density of the LWSCC mixtures. In addition, the use of RTSFs enhanced the tensile strength of the developed concrete mixtures, where fibrous concrete showed increases in the splitting tensile strength in the range of 38 to 76% over that of non-fibrous concrete. On the other hand, the compressive strength of the mixtures was not affected. The test beams with RTSFs exhibited improved flexural performance in terms of delaying and controlling cracking, enhancing ultimate load, and increasing ductility. Compared with the control non-fibrous beam, the increases in the cracking load, ultimate load, and ductility index were up to 63.8, 9.3, and 16%, respectively. The test results of the beams were compared with theoretical predictions, and good agreement was found.

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Assessment of concrete shear resistance of lightweight SCC beams containing scoria aggregates

Cited by 2 publications

References 35 publications

Creep Coefficient for Self-Compacting Concrete (SCC)

Creep Coefficient for Self-Compacting Concrete (SCC)

Behavior of Lightweight Self-Compacting Concrete with Recycled Tire Steel Fibers

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