CFRP Strengthening of Pre-damaged Fiber Reinforced Recycled and Lightweight Concrete Beams
A Master of Science thesis in Civil Engineering by Michael AbdelMessih entitled, “CFRP Strengthening of Pre-damaged Fiber Reinforced Recycled and Lightweight Concrete Beams”, submitted in April 2023. Thesis advisor is Dr. Sherif Yehia. Soft copy is available (Thesis, Completion Certificate, Approval...
محفوظ في:
| المؤلف الرئيسي: | |
|---|---|
| التنسيق: | doctoralThesis |
| منشور في: |
2023
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| الموضوعات: | |
| الوصول للمادة أونلاين: | http://hdl.handle.net/11073/25308 |
| الوسوم: |
إضافة وسم
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| _version_ | 1864513431747428352 |
|---|---|
| author | AbdelMessih, Michael |
| author_facet | AbdelMessih, Michael |
| author_role | author |
| dc.contributor.none.fl_str_mv | Yehia, Sherif |
| dc.creator.none.fl_str_mv | AbdelMessih, Michael |
| dc.date.none.fl_str_mv | 2023-08-29T06:51:34Z 2023-08-29T06:51:34Z 2023-04 |
| dc.format.none.fl_str_mv | application/pdf |
| dc.identifier.none.fl_str_mv | 35.232-2023.07 http://hdl.handle.net/11073/25308 |
| dc.language.none.fl_str_mv | en_US |
| dc.subject.none.fl_str_mv | Lightweight concrete Recycled Concrete Aggregate Fiber Reinforcement CFRP Strengthening |
| dc.title.none.fl_str_mv | CFRP Strengthening of Pre-damaged Fiber Reinforced Recycled and Lightweight Concrete Beams |
| dc.type.none.fl_str_mv | info:eu-repo/semantics/publishedVersion info:eu-repo/semantics/doctoralThesis |
| description | A Master of Science thesis in Civil Engineering by Michael AbdelMessih entitled, “CFRP Strengthening of Pre-damaged Fiber Reinforced Recycled and Lightweight Concrete Beams”, submitted in April 2023. Thesis advisor is Dr. Sherif Yehia. Soft copy is available (Thesis, Completion Certificate, Approval Signatures, and AUS Archives Consent Form). |
| format | doctoralThesis |
| id | aus_189a5906b91f6e553e4ab15ca7213d43 |
| identifier_str_mv | 35.232-2023.07 |
| language_invalid_str_mv | en_US |
| network_acronym_str | aus |
| network_name_str | aus |
| oai_identifier_str | oai:repository.aus.edu:11073/25308 |
| publishDate | 2023 |
| repository.mail.fl_str_mv | |
| repository.name.fl_str_mv | |
| repository_id_str | |
| spelling | CFRP Strengthening of Pre-damaged Fiber Reinforced Recycled and Lightweight Concrete BeamsAbdelMessih, MichaelLightweight concreteRecycled Concrete AggregateFiber ReinforcementCFRP StrengtheningA Master of Science thesis in Civil Engineering by Michael AbdelMessih entitled, “CFRP Strengthening of Pre-damaged Fiber Reinforced Recycled and Lightweight Concrete Beams”, submitted in April 2023. Thesis advisor is Dr. Sherif Yehia. Soft copy is available (Thesis, Completion Certificate, Approval Signatures, and AUS Archives Consent Form).In the last decade, Carbon Fiber Reinforced Polymer (CFRP) retrofitting has been regarded as one of the most efficient repair solutions for pre-cracked normal weight concrete beams. However, extensive research in that field has resulted in a prepossession towards CFRP retrofitting as the most efficient repair procedure for any concrete type. Therefore, the objective of this research is to evaluate the feasibility of utilizing CFRP retrofitting as a repair method to restore shear capacity for 16 shear-deficient pre-damaged (eight RCA and eight LWC) fiber-reinforced beams. The beams were prepared using four different types of fibers: 3D and 5D steel fibers, synthetic fibers (Strux 90/40), and hybrid fibers (5D steel fiber and synthetic fiber) with a 0.75% volume fraction. The retrofitting process involves two steps injection and application of CFRP sheets. Eight beams, four from each concrete type, of the 16 beams were only repaired by injection to determine the contribution of the injection to the shear capacity. While the other eight beams were retrofitted by injection and applications of CFRP sheets. The results show that injection only as a repair method is able to restore an average of 95% of the shear capacity and CFRP retrofitting is able to restore an average of 114% of the shear capacity compared to that of the undamaged beams. In addition, CFRP retrofitting forced all beams to fail in flexure, even though the RCA and LWC are shear-deficient concrete types. Furthermore, the experimental results are compared to theoretical results predicted by ACI code, fib model code 2010, and other literature for the shear strength of CFRP retrofitted beams. The comparison showed that the ACI code predication for retrofitting pre-cracked beams (CFRP + injection) is conservative with a factor of safety of 0.81 and fib MC 2010 provided close predication values for beams repaired by injection only with a factor of safety of 0.92College of EngineeringDepartment of Civil EngineeringMaster of Science in Civil Engineering (MSCE)Yehia, Sherif2023-08-29T06:51:34Z2023-08-29T06:51:34Z2023-04info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/doctoralThesisapplication/pdf35.232-2023.07http://hdl.handle.net/11073/25308en_USoai:repository.aus.edu:11073/253082026-04-30T09:20:50Z |
| spellingShingle | CFRP Strengthening of Pre-damaged Fiber Reinforced Recycled and Lightweight Concrete Beams AbdelMessih, Michael Lightweight concrete Recycled Concrete Aggregate Fiber Reinforcement CFRP Strengthening |
| status_str | publishedVersion |
| title | CFRP Strengthening of Pre-damaged Fiber Reinforced Recycled and Lightweight Concrete Beams |
| title_full | CFRP Strengthening of Pre-damaged Fiber Reinforced Recycled and Lightweight Concrete Beams |
| title_fullStr | CFRP Strengthening of Pre-damaged Fiber Reinforced Recycled and Lightweight Concrete Beams |
| title_full_unstemmed | CFRP Strengthening of Pre-damaged Fiber Reinforced Recycled and Lightweight Concrete Beams |
| title_short | CFRP Strengthening of Pre-damaged Fiber Reinforced Recycled and Lightweight Concrete Beams |
| title_sort | CFRP Strengthening of Pre-damaged Fiber Reinforced Recycled and Lightweight Concrete Beams |
| topic | Lightweight concrete Recycled Concrete Aggregate Fiber Reinforcement CFRP Strengthening |
| url | http://hdl.handle.net/11073/25308 |