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http://hdl.handle.net/20.500.12358/19198
TitleStrengthening of RC Beams Using SCC Jacketing with Wire Mesh
Title in Arabicتقوية الكمرات الخراسانية المسلحة باستعمال قمصان من الخرسانة ذاتية الدمك مع شبكة اسلاك
Abstract

This research presents the experimental investigations of the structural behavior of reinforced concrete (RC) beams. The strengthening technique that was used section enlargement using Self-Compacting Concrete (SCC) reinforced with welded wire mesh (WWM). Different mechanical bonding between old and new concrete techniques were also investigated. These included dowels, expansion bolts and surface roughening. Strengthening of beams was achieved by casting a SCC U-formed jacket that reinforced with small diameter of WWM to increase their shear resistance and increasing the flexural strength of concrete beams. Four-point bending flexural tests were conducted on small-scale RC beams in the testing program up to failure. The test specimens were 1200 mm long with a cross section of 100 mm x 150 mm and after section enlargement the cross section was increased to 160 mm x 200 mm. The test program included eighteen beams; three out of them were used as control beams; four out of these beams were used as monolithic control casted beams. While the other eleven beams were tested as strengthened beams and classified into two groups based on bonding technique and WWM properties. The obtained results from the investigation indicated that the enlarged section using SCC jacketing with WWM improved significantly structural performance of beam measured in terms of ultimate load carrying capacity, stiffness, crack width and deflection. The strengthened beams were able to reach their full flexural capacities comparable to their monolithic counterpart’s beams. The interlaminar shear failure was prevented in all strengthened beams. To understand the structure behavior of the strengthened beams, theoretical analysis was carried out and a simplified design procedure was presented in this thesis to predict the flexural strength and deflection at yielding and at ultimate stages. This analysis is done based on the basics of flexural theory and its assumptions and a good agreement at ultimate stage between experiment test results and prediction values was achieved.

Authors
Abu Maraq, Mohamed
Supervisors
Ziara, Mohamed
Typeرسالة ماجستير
Date2016
LanguageEnglish
Publisherالجامعة الإسلامية - غزة
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  • PhD and MSc Theses- Faculty of Engineering [641]
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The institutional repository of the Islamic University of Gaza was established as part of the ROMOR project that has been co-funded with support from the European Commission under the ERASMUS + European programme. This publication reflects the views only of the author, and the Commission cannot be held responsible for any use which may be made of the information contained therein.

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The institutional repository of the Islamic University of Gaza was established as part of the ROMOR project that has been co-funded with support from the European Commission under the ERASMUS + European programme. This publication reflects the views only of the author, and the Commission cannot be held responsible for any use which may be made of the information contained therein.

Contact Us | Send Feedback