Items for improving bond- slip behavior between CFRP sheets cement base bonding agent and bonding agent concrete interface
Other Title(s)
عناصر لتحسين الترابط و تقليل الانزلاق الحادث بين الواح التدعيم المصنعة من ألياف الكربون و بين مادة الربط ذات الأساس الإسمنتي و كذا تحسين الترابط بين مادة الربط ذات الأساس الإسمنتي و العناصر الخرسانية المقواة
Joint Authors
Diyab, Hisham Muhammad A.
Rashwan, Muhammad Mahmud
Abd al-Hafiz, Atif Muhammad
Ali, Ahmad Muhammad al-Mahdi
Source
Journal of Engineering Sciences
Issue
Vol. 46, Issue 3 (30 May. 2018), pp.299-316, 18 p.
Publisher
Assiut University Faculty of Engineering
Publication Date
2018-05-30
Country of Publication
Egypt
No. of Pages
18
Main Subjects
Abstract EN
This paper concerned with the replacement of Epoxy with cement base matrixes as bonding agents for CFRP sheets.
Many items were investigated to improve the bond strength and decrease slippage in strengthening system.
More than 25 plain concrete prisms with low compressive strength (20 N/mm2 ) were used to act as the original weak concrete members.
Two main groups of cement base bonding agents were investigated in this research (Portland cement and Grout matrix’s).
Three main items were looked for.
Item 1: mixture content; it was represented in (cement content, using silica fumes & using short metallic fibers).
Item 2: CFRP sheet modification; represented in either: a) making holes in CFRP sheets -hence the cross section area of the CFRP sheets were kept the same as all other specimens- or b) impregnate the CFRP sheets in latex-base adhesive material just before using).
Item 3: the strengthening technique; which was represented by both the bonding agent layer thickness & the Curing pressure; (it is a pressure done with a specific value just after applying the strengthening on the concrete prism along 24 hours).
Single shear test (pull off test) was carried out to evaluate each parameter effect and the results showed that the cement-base matrixes were a very good alternative for epoxy as a bonding agent.
Applying Curing pressure; almost double the bond strength and prevent the failure from occurrence in the surface interval between bonding agent / concrete interface, using latex and making holes in the CFRP sheet enhance the penetration of the bonding agent within CFRP sheet.
Portland cement gives higher results than grout.
Using silica fumes and even increasing the cement content; both have a negative effect on bond strength.
American Psychological Association (APA)
Rashwan, Muhammad Mahmud& Abd al-Hafiz, Atif Muhammad& Diyab, Hisham Muhammad A.& Ali, Ahmad Muhammad al-Mahdi. 2018. Items for improving bond- slip behavior between CFRP sheets cement base bonding agent and bonding agent concrete interface. Journal of Engineering Sciences،Vol. 46, no. 3, pp.299-316.
https://search.emarefa.net/detail/BIM-912081
Modern Language Association (MLA)
Rashwan, Muhammad Mahmud…[et al.]. Items for improving bond- slip behavior between CFRP sheets cement base bonding agent and bonding agent concrete interface. Journal of Engineering Sciences Vol. 46, no. 3 (May. 2018), pp.299-316.
https://search.emarefa.net/detail/BIM-912081
American Medical Association (AMA)
Rashwan, Muhammad Mahmud& Abd al-Hafiz, Atif Muhammad& Diyab, Hisham Muhammad A.& Ali, Ahmad Muhammad al-Mahdi. Items for improving bond- slip behavior between CFRP sheets cement base bonding agent and bonding agent concrete interface. Journal of Engineering Sciences. 2018. Vol. 46, no. 3, pp.299-316.
https://search.emarefa.net/detail/BIM-912081
Data Type
Journal Articles
Language
English
Notes
Record ID
BIM-912081