Reinforced rubberized continuous deep beams under cyclic loadings

Makki, Ola Mazen; Al-Mutairee, Hayder M. K.; Abdulsada, Jaafar Salman; Jawad, Enaam Kareem

doi:10.30772/qjes.2024.153805.1398

Reinforced rubberized continuous deep beams under cyclic loadings

Document Type : Research Paper

Authors

Ola Mazen Makki ¹

Hayder M. K. Al-Mutairee ²

Jaafar Salman Abdulsada ¹

Enaam Kareem Jawad ¹

¹ Department of Civil Engineering, College of Engineering, University of Al-Qadisiyah, Diwaniyah, Iraq.

² Civil Engineering Department, College of Engineering, University of Babylon, Babil, Iraq.

https://doi.org/10.30772/qjes.2024.153805.1398

Abstract

Continuous deep beams (CDBs) expose usually to repeated and cyclic load by loading and unloading states and the wave of an earthquake. Adding scraped tires rubber to the concrete mix (which is researcher interesting nowadays) improve its dynamic properties besides the sustainability purposes. Six CDBs were casted and tested experimentally under static and repeated loads. It can be concluded that, the CDBs loss about 39% and 30.1% of them ultimate capacity after 10% volumetric replacement of sand and gravel respectively. Also, the ultimate strength of the beams decreases when comparing with the static loads by 14%, 8% and 9% for conventional beam, gravel and sand replacement beams respectively. The cyclic results confirm that, each load (positive and negative) make its own strut, till it’s crossed together and the beams losses about 35 to 45% of them capacity due to the cycles. As a conclusion, it could be noting that, the static loading results matches with the strut tie method calculations,

Keywords

Cyclic load

Rubcrete

Rubberized concrete

Continuous deep beams

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