Strengthening and Repairing of Reinforced Concrete Beams by Ferrocement | ||||
| Benha Journal of Engineering Science and Technology | ||||
| Volume 1, Issue 1, July 2018, Page 79-104 PDF (2.77 MB) | ||||
| Document Type: Research Article | ||||
| DOI: 10.21608/bjest.2018.445232 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
| Yousry B. Shaheen; Noha M. Soliman; Afaf Rady El-Kashef | ||||
| Civil Engineering Department, Faculty of Engineering. Menoufia University | ||||
| Abstract | ||||
| This paper presents a proposed method for strengthening and repairing of reinforced concrete beams using ferrocement laminates as a viable alternative to steel plates and carbon fibers sheets which are directly glued to the cracked tension face of the beam by epoxy resins without shear connectors. The results of the experimental investigation to examine the effectiveness of this method are reported and discussed including strength, deflection, compressive and tensile strains, ductility ratio, Energy absorption properties and cracking characteristics of the strengthening and repairing of the reinforced concrete beams. Fifteen reinforced concrete beams were tested under four lines loadings until failure over simply supported 900mm span and having the dimensions of 50x100mm in cross section. The experimental program comprises three designations series. Series I include beam 1 control and beam 9 controls which conventional reinforced with steel bars and stirrups without and with polypropylene fibers respectively. Series II consists of beams 2-8 which were repaired after failure with various types of metallic and nonmetallic reinforcing materials. Series III comprises beams 10-15 which were strengthening with various layers of steel meshes while beam 15 was strengthening with one layer of tenser mesh. The experimental results of the repaired beams emphasized that irrespective of the type of used meshes expanded or welded steel mesh or the repair scheme, better cracking behavior for all test specimens could be achieved compared to their original behavior. Under short- term loading conditions, all repaired specimens restored more than their original ultimate strengths. The ductility ratio and energy absorption properties also improved by this proposed method of strengthening and repairing of beams by ferrocement | ||||
| Keywords | ||||
| Ferro-cement; Beams with openings; Experimental program; Structural behavior; Analytical mode | ||||
|
Statistics Article View: 30 PDF Download: 12 |
||||
