International Journal of Civil and Structural Engineering Research ISSN 2348-7607 (Online) Vol. 8, Issue 1, pp: (161-172), Month: April 2020 - September 2020, Available at: www.researchpublish.com
FINITE ELEMENT MODELING OF LIGHTWEIGHT CONCRETE SOLID SLABS REINFORCED USING G.F.R.P. REBAR 1
Alaa G. Sherif, 2 Nasr Z. Hassan, 3 Mohamed Saber, 4Mirhan W. Adly 1 2
Assoc. Prof. of Concrete Structures, Faculty of Eng., Mattaria, Helwan Univ., Cairo, Egypt 3
4
Prof. of Concrete Structures, Faculty of Eng., Mattaria, Helwan Univ., Cairo, Egypt
Teacher, Construction Engineering Dept., Egyptian Russian University, Cairo, Egypt
Teaching Assistant, Construction Engineering Dept., Egyptian Russian University, Cairo, Egypt
Abstract: Recently, the use of Fiber Reinforced Polymers (FRP) as an alternate to conventional steel has proved to be an effective solution to the corrosion problem. However, FRP reinforcing bars have a relatively low axial and transverse stiffness compared to steel bars which results in a lower shear capacity of FRP reinforced concrete (RC) elements compared to the steel-RC elements. Glass Fiber Reinforcement Plastics (GFRP)- rebar are non-corrosive materials, good range of thermal performance, high tensile strength, resistance to acids, good electro-magnetic properties, vibration and impact loading, This research using ANSYS (15.0) to study the behavior of light-weight concrete slabs reinforced with GFRP-rebar according to different parameters obtained in this research. A total of sixty-six finite element slab models are investigated. twelve verification slabs to check the validity and accuracy of the finite element procedure models. The theoretical results obtained from ANSYS program are in good agreement with experimental results. The results include also the effect of each parameter on initial stiffness, energy absorption and ductility of the slabs. Keywords: Solid plates, Flexure strength, GFRP rebar, Crack pattern.
I. INTRODUCTION FRP reinforcement has widely been used as internal reinforcement in the new construction of civil structures or as near surface mounted NSM concrete reinforcement for increasing flexural and shear strength of deficient reinforced concrete member. This has made it necessary to create a comprehensive overview needed to justify their safe and economic use. The application of GFRP-bars as reinforced for concrete elements are not yet well established in neither Egypt or in the Middle East. One of the main reasons is that these bars are imported from other regions such as Europe, Japan, or the United States. This leads to an extremely high cost products and dictates to produce GFRP-bars locally. This will encourage local manufactures to adopt the process of making these bars for the Egyptian market. FRP is a composite made from reinforcement imbedded in a plastic (polymer) matrix. Physical and mechanical properties of FRP depend mainly on the type of fibers and resins used to form the composite. Such differences arise from the interaction mechanism between FRP reinforcement bars and concrete element. Although there are many researchers covered different subjects of concrete beams reinforced with GFRP-bars, there are a few numbers of work concern with concrete slabs which are reinforced with GFRP-bars.
2. PROGRAM STUDY Slabs Divided into eleven Groups had Different dimensions Group I have 2000 mm long, 2000 mm wide and 100 mm depth, Group II have 1700 mm long, 1700 mm wide and 100 mm depth, Group III have 2000 mm long, 1800 mm wide and 100 mm depth, Group IV have 2000 mm long, 1650 mm wide and 100 mm depth, Group V have 2000 mm long,
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