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المؤلفElghazy M.
المؤلفEl Refai A.
المؤلفEbead U.
المؤلفNanni A.
تاريخ الإتاحة2020-03-03T06:19:03Z
تاريخ النشر2018
اسم المنشورJournal of Composites for Construction
المصدرScopus
الرقم المعياري الدولي للكتاب10900268
معرّف المصادر الموحدhttp://dx.doi.org/10.1061/(ASCE)CC.1943-5614.0000873
معرّف المصادر الموحدhttp://hdl.handle.net/10576/13097
الملخصThe structural performance of corrosion-damaged reinforced concrete (RC) beams repaired with fabric-reinforced cementitious matrix (FRCM) was investigated. Eleven RC beams were constructed and tested in flexure under four-point load configuration. Nine beams were subjected to an accelerated corrosion process for 70 days to obtain an average mass loss of 13% in the tensile steel reinforcing bars while two other beams were tested as controls. One corroded beam was repaired with carbon fiber-reinforced polymer (CFRP) before testing for comparison. The test parameters included the number of fabric plies (1-4), the FRCM repair scheme (end-anchored and continuous U-wrapped strips), and FRCM materials [carbon and polyparaphenylene benzobisoxazole (PBO)]. Test results showed that corrosion slightly reduced the yield and ultimate strengths of the beams. The use of FRCM increased the ultimate capacity of corroded beams between 5 and 52% and their yield strength between 6 and 22% of those of the uncorroded virgin beam. Beams repaired with U-wrapped FRCM strips showed higher capacity and higher ductility than those repaired with the end-anchored bottom strips having a similar number of layers. A high gain in the flexural capacity and a low ductility index were reported for specimens with a high amount of FRCM layers. A new factor was incorporated in the design equations of the ACI 549.4R-13 to account for the FRCM scheme.
راعي المشروعThe authors would like to express their gratitude to the Qatar National Research Fund (a member of Qatar Foundation) for funding this project under Grant No. NPRP 7-1720-2-641. The authors would also like to express their gratitude to the personnel of Ruredil and Simpson Strong-tie for donating the materials used in these tests. The statements made herein are solely the responsibility of the authors.
اللغةen
الناشرAmerican Society of Civil Engineers (ASCE)
الموضوعCorrosion
Fabric-reinforced cementitious mortars (FRCM)
Flexure
Reinforced concrete (RC)
Repair
Strengthening
العنوانCorrosion-Damaged RC Beams Repaired with Fabric-Reinforced Cementitious Matrix
النوعArticle
رقم العدد5
رقم المجلد22
dc.accessType Abstract Only


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