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Strengthening of deficient rc columns subjected to concentric and eccentric loads / Abdelrahman Hazem Mohamed Ebrahim ; Supervised Hany Ahmed Abdalla , Khaled Farouk Elkashif

By: Contributor(s): Material type: TextTextLanguage: English Publication details: Cairo : Abdelrahman Hazem Mohamed Ebrahim , 2019Description: 95 P. : facsimiles ; 30cmOther title:
  • تدع{u٠٦أأ}م الأعمدة الخرسان{u٠٦أأ}ة المسلحة المع{u٠٦أأ}بة و المعرضة لأحمال محور{u٠٦أأ}ة و لامحور{u٠٦أأ}ة [Added title page title]
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  • Issued also as CD
Dissertation note: Thesis (M.Sc.) - Cairo University - Faculty of Engineering - Department of Civil Engineering Summary: In this research, different techniques of repair of deficient R.C. columns are compared. These include carbon fiber reinforced polymers (CFRP) sheets, steel jackets, and R.C. jackets. Two main variables were considered, the load eccentricity and the strengthening technique. The experimental investigation includes testing of eight deficient columns. The specimens were tested under axial concentric and eccentric loading. The experimental results showed that CFRP wrapping, steel jackets and R.C. jackets increased the ultimate capacity by 27%, 55%, and 107%, respectively in concentric loading case and by 30%, 167%, and 187%, respectively in eccentric loading case. RC jacket technique showed the highest value in ultimate load and initial stiffness in both cases of loading, also CFRP wrapping technique significantly improved ductility and toughness achieving the highest mid transverse displacement than other specimens in both cases of loading
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Thesis Thesis قاعة الرسائل الجامعية - الدور الاول المكتبة المركزبة الجديدة - جامعة القاهرة Cai01.13.05.M.Sc.2019.Ab.S (Browse shelf(Opens below)) Not for loan 01010110079930000
CD - Rom CD - Rom مخـــزن الرســائل الجـــامعية - البدروم المكتبة المركزبة الجديدة - جامعة القاهرة Cai01.13.05.M.Sc.2019.Ab.S (Browse shelf(Opens below)) 79930.CD Not for loan 01020110079930000

Thesis (M.Sc.) - Cairo University - Faculty of Engineering - Department of Civil Engineering

In this research, different techniques of repair of deficient R.C. columns are compared. These include carbon fiber reinforced polymers (CFRP) sheets, steel jackets, and R.C. jackets. Two main variables were considered, the load eccentricity and the strengthening technique. The experimental investigation includes testing of eight deficient columns. The specimens were tested under axial concentric and eccentric loading. The experimental results showed that CFRP wrapping, steel jackets and R.C. jackets increased the ultimate capacity by 27%, 55%, and 107%, respectively in concentric loading case and by 30%, 167%, and 187%, respectively in eccentric loading case. RC jacket technique showed the highest value in ultimate load and initial stiffness in both cases of loading, also CFRP wrapping technique significantly improved ductility and toughness achieving the highest mid transverse displacement than other specimens in both cases of loading

Issued also as CD

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