Structural Behavior Of Simple Supported Two Layers Reinforced Concrete (Normal strength concrete & Mortar with 3-Dimension glass fiber), Beams
Article Sidebar
Main Article Content
Abstract
This paper represents an experimental investigation of the layered concrete beam. It contains studying the possibility of using the mortar intervention with layers of glass fibre at the tension zone in a loaded supported concrete beam. To produce a beam with less weight than the beam with all Normal concrete and detecting the effect of this replacement on beam properties. A rectangular beams section (150*200*1000)mm cast with NSC (normal strength concrete) at compression zone and mortar with layers of 3D glass fibre used as a part of the tension zone. The produced beams are layered beams with a lighter weight than the homogenous RC beam. Three deferent levels of the replaced layers (1/3,1/2, and 2/3 of the beam thickness) were studied, all beams were tested under Two point load till failure.
The maximum load capacity result shows an apparent lowering in the load capacity of the beam, but as the lightweight layer increases, this lowering in the load capacity becomes less. for (1/3,1/2 and 2/3) of the beam thickness replace with mortar and 3D textile fibre, the lowering percentage of failure load compare with the homogenous reinforced concrete beam are (33.04%, 27.18%, and 19.73%), and the lowering in weight is (5.45%%, 9.07%, and 12..92%)
for the same sequence, respectively.
Stiffness, ductility and toughness of all beams are tested. An apparent lowering in the stiffness value of the layered beams is recorded with the reference ones. At the same time, it shows an increase in the toughness and toughness value.
Metrics
Article Details
This work is licensed under a Creative Commons Attribution 4.0 International License.
THIS IS AN OPEN ACCESS ARTICLE UNDER THE CC BY LICENSE http://creativecommons.org/licenses/by/4.0/
Plaudit
References
Arther H., David D., & Charles W.(2010). Design of concrete structure. Mc Graw Hill. Singapore, 14 edition , page 2.
Ra ، ad M., (2006). flexural crack in hybrid Reinforced Concrete Beams. a thesis submitted to the Civil Engineering Department, college of engineering. Al Mustansiraiya University for the degree of master of science in civil engineering, Iraq.
Giandomenico T. (2010) Experimental Evaluation of steel decking and lightweight concrete. Master's degree thesis in the structural engineering building, college of Engineering. Architecture department, Politecnico di Milano, https://www.politesi.polimi.it/bitstream/10589/2347/1/2010_07_Penza.
Vanissorn V. Reinforced concrete beams with lightweight concrete infill. Academic Journals; 2012 Jul 19;7(27). Available from: http://dx.doi.org/10.5897/sre12.115.
Fathoni U., and Norhasniyat M.H., flexural behavior of Hybrid concrete beam. the 3rd national Graduate
conference (Nat Grad 3015), University Tenaga Nasional, Putrajaya Campus, 2015, p.p. (225-228), http://dspace.uniten.edu.my/jspui/handle/123456789/10225
Mokhatar SN., Mustafa MM., Saed Rouwab S., & Hadipramana J. Performance of Reinforced Concrete Beam with Differently Positioned Replacement Zones of Block Infill under Low Impact Loads. MATEC Web of Conferences [Internet]. EDP Sciences; 2017;103:02003. Available from: http://dx.doi.org/10.1051/matecconf/201710302003
Martinez P., Volivonis J., Salna R., & Cobo E. Experimental study of flexural behaviour of layered steel fibre reinforced concrete beams. journal of civil engineering and managment [Internet]. Vilnius Gediminas Technical University; 2017 Jun 22;23(6):806–13. Available from: http://dx.doi.org/10.3846/13923730.2017.1319413
Fang Z., Jiang H., Liu A, Feng J., & Chen Y. Horizontal Shear Behaviors of Normal Weight and Lightweight Concrete Composite T-Beams. International Journal of Concrete Structures and Materials [Internet]. Springer Nature America, Inc; 2018 Aug 2;12(1). Available from: http://dx.doi.org/10.1186/s40069-018-0274-3.
Zena J., Assim M.,& Ammar S.,( 2019). Mechanical Behavior of simply Supported two layers of reinforced concrete (LWC-NSC) beams. International Journal of Civil Engineering and Technology (IJCIET).Volume:10,Issue:1,Pages:1122-1132.
Iraqi standard specification No.5,(1984) for Portland Cement , Central Organization for Standardization and Quality Control .
Silica fume Technical Data sheet ,ConMix ,MegaAdd MS(d), www.conmix.com .
ASTM C1240-03a. standard specification for silica fume used in cementitious Mixture. the annual book of ASTM standard, Vol. 04.,02, pp. 2004.
ACI Committee 211. standard practice for selecting proportion for normal, Heavyweight, and mass concrete. (ACI 211.1-91) (Reapproved 2002), ACI manual of concrete practice.
ASTM C 192 /C 192M-02. Standard Practice for Making and Curing concrete test specimens in the Laboratory.
Appa Rao G., Vijayanand I., Eligehausen R. Studies on ductility and evaluation of minimum flexural reinforcement in RC beams. Materials and Structures [Internet]. Springer Nature; 2007 Jul 20;41(4):759–71. Available from: http://dx.doi.org/10.1617/s11527-007-9280-7
ASTM C1018-97, 2001. standard test method for flexural toughness and first crack strength of fiber reinforced concrete (using a beam with third point loading. ASTM Philadelphia, standard 4.02. concrete and aggregate: 533-539. http://www.framcos.org/FraMCoS-6/329.pdf
Appa Rao G., Sreenivasa Rao A. Toughness indices of steel fiber reinforced concrete under mode II loading. Materials and Structures [Internet]. Springer Nature; 2009 Aug 5;42(9):1173–84. Available from: http://dx.doi.org/10.1617/s11527-009-9543-6.