Experimental Study of Behaviour of Reactive Powder Concrete Strengthening by NSM-CFRP Corbels
محل انتشار: ژورنال مهندسی عمران، دوره: 4، شماره: 5
سال انتشار: 1397
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 374
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شناسه ملی سند علمی:
JR_CEJ-4-5_007
تاریخ نمایه سازی: 6 آذر 1397
چکیده مقاله:
The research contain an experimental examination for the behaviour of reactive powder concrete corbels, strengthened with varying orientation of Near Surface Mounted Carbon Fiber Reinforcement Polymers (CFRP) strips. Six reactive powder concrete corbels were tested. Divided into two groups, each group contain three specimens, one of them without strengthening takes as control corbel specimen, two corbels in each group strengthened by inclined and horizontal near surface mounted carbon fiber reinforced polymer (NSM-CFRP) stripes, other variable was the shear span to the effective depth ratio (a/d) to study the influences of those variables on the ultimate strength carrying capacity, cracking pattern, cracking load, vertical deflection, failure modes. The results showed an important improvement in the behaviour and load capacity of strengthened reinforced RPC corbels in addition to enhancing the stiffness of corbels. For group A where a/d =0.65, the percentages of increase in load failure were about (10.3% - 15.45%) for inclined and horizontal strengthening respectively, and for group B where a/d =0.4, the percentages of increase in load failure were about (7.1% - 14.6%) for inclined and horizontal strengthening respectively.
کلیدواژه ها:
Corbels ، Reactive Powder Concrete ، Near Surface Mounted ، Carbon Fibers Reinforcement Polymer (CFRP) ، Shear Strength
نویسندگان
Abdul Kareem Qasim Mohammad
Civil Engineering Department, Baghdad University, Baghdad, Iraq
Mushriq Fuad Kadhim Al-Shamaa
Civil Engineering Department, Baghdad University, Baghdad, Iraq