EXPERIMENTAL CHARACTERISTICS OF RUBBERIZED CONCRETE | ||
| JES. Journal of Engineering Sciences | ||
| Article 6, Volume 50, Issue 4, July 2022, Pages 248-262 PDF (670.33 K) | ||
| Document Type: Technical paper | ||
| DOI: 10.21608/jesaun.2022.141888.1145 | ||
| Authors | ||
| Ahmed Arafa* 1; Norhan Khalid2; Omar A Farghal3; Abdel-Rahman Ahmed3 | ||
| 1Assist Prof., Civil Engineering Department, Faculty of Engineering, Sohag University, Sohag, Egypt. | ||
| 2MSc. Student, Civil Engineering Department, Faculty of Engineering, Assiut University, Assiut Egypt. | ||
| 3Professor, Civil Engineering Department, Faculty of Engineering, Assiut University, Assiut Egypt. | ||
| Abstract | ||
| One of the construction industry’s main interest is using innovative materials to facilitate construction, extend service life, and minimize maintenance and rehabilitation costs. Recycling waste tire rubbers into conventional concrete materials constitutes one of the biggest challenging issues in modern concrete technology, which can significantly relieve critical environmental issues. However, the compressive strength reduction caused by the added rubber aggregates, albeit with significant ductility enhancement, has limited its application in concrete structures. The present study aimed at attaining the optimum ratio of crumb rubber ratio with minimal reduction in compressive strength to be used in large scale elements in which the ductility constitutes a critical design parameter. Different rubberized concrete mixes with different percentages of crumb rubber (CR) and different treatment were investigated. The main parameters were the type of crumb rubber (course or fine), the percentage of replacement (5%, 10%, 20%, and 30%), the treatment conditions (treated with NAOH, or without treatment), and using silica fume as partial replacement of cement. The test data were analyzed considering the workability, the compressive, tensile, and flexural strengths. The results revealed that the most appropriate concrete mix is using a 20% treated fine crumb rubber, with silica fume incorporation. | ||
| Keywords | ||
| Crumb rubber; Rubberized concrete; Brittle Failure; Ductility; Optimum concrete mix | ||
| References | ||
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