scholarly journals Repair and Rehabilitation of RCC Beam using Synthetic Fiber Material

2019 ◽  
Vol 8 (12S) ◽  
pp. 1020-1022
Keyword(s):  
Fiber Material ◽  
Fiber Reinforced Polymer ◽  
Synthetic Fiber ◽  
Existing Structures ◽  
Frp Composite ◽  
Reinforced Polymer ◽  
Test Study ◽  
The World ◽  
Carbon Filaments

Retrofitting is the alteration of existing structures to make them continuously impenetrable to seismic development, ground development, etc. A large number of the current strengthened solid structures all through the world are in pressing need of recovery, fix or reproduction in light of crumbling because of different factors like consumption, absence of itemizing, disappointment of holding between pillar segment joints and so on. Fiber Reinforced Polymer (FRP) composite has been acknowledged in the development business as a promising substitute for fixing and in augmenting the quality of Reinforced concrete structures. This paper exhibits a test study on fortified solid shafts retrofitted with different kinds of filaments remotely. The goal of this examination is to explore the conduct of shafts in the wake of retrofitting utilizing different normal and engineered filaments including steel strands, polypropylene strands, glass filaments, Basalt filaments, carbon filaments and so forth.

scholarly journals Fibre Reinforced Polymer in Retrofitting

2021 ◽  
Vol 9 (12) ◽  
pp. 83-87
Author(s):  
Sumirah Nisar
Keyword(s):  
Construction Industry ◽  
Seismic Damage ◽  
Seismic Action ◽  
Existing Structures ◽  
Frp Composite ◽  
Current State ◽  
Reinforced Polymer ◽  
Earthquake Resistant ◽  
The World ◽  
Fibre Reinforced Polymer

Abstract: Retrofitting is the modification of existing structures to make them more resistant to seismic activity, ground motion etc. Many of the existing reinforced concrete structures throughout the world are in urgent need of rehabilitation, repair or reconstruction because of deterioration due to various factors like corrosion, lack of detailing, failure of bonding between beamcolumn joints etc. Fibre Reinforced Polymer (FRP) composite has been accepted in the construction industry as a promising substitute for repairing and in incrementing the strength of RCC structures. It stabilizes the current structure of buildings and making them earthquake resistant. This paper presents a representative overview of the current state of using FRP materials as a retrofitting technique for the structures not designed to resist seismic action. It summarizes the scopes and uses of FRP materials in seismic strengthening of RCC structures and masonry retrofitting. Keywords: Retrofitting, Rehabilitation, Seismic damage, fibre

Concrete Beams Reinforced with GFRP Plates

2017 ◽  
Vol 747 ◽  
pp. 220-225
Author(s):  
Alberto Pedro Busnelli ◽  
Ruben Edgardo López ◽  
Jorge Carlos Adue
Keyword(s):  
Glass Fiber ◽  
Carbon Fibers ◽  
Concrete Beams ◽  
Fiber Reinforced Polymer ◽  
Test Results ◽  
Glass Fiber Reinforced Polymer ◽  
Reinforced Polymer ◽  
Glass Fiber Reinforced ◽  
The World ◽  
Critical Resistance

This is the presentation of the research carried out by the Faculty of Engineering at Universidad Nacional de Rosario on the use of pultruded Glass Fiber Reinforced Polymer (GFRP) plates to increase the flexural strength of reinforced concrete beams.Pultruded plates are the type of elements made of composite materials which are most widely used for this kind of strengthening. Although around the world the material used for these plates is carbon fibers, its high cost prevents its widespread use in our country.One of the aims of our research program is, precisely, to verify whether it is possible to substitute such plates for significantly cheaper glass fiber elements manufactured in Argentina. The test results have proved that this alternative is feasible.What's more, the greater thickness of the glass fiber plates allows the use of additional anchor bolts. These bolts provide the system with post-critical resistance and ductility-characteristics which are absolutely necessary, for example, in structures in seismic areas.

scholarly journals 3D-Printed Pseudo Ductile Fiber-Reinforced Polymer (FRP) Composite Using Discrete Fiber Orientations

Fibers ◽  
2020 ◽  
Vol 8 (9) ◽  
pp. 53
Author(s):  
Shreya Vemuganti ◽  
Eslam Soliman ◽  
Mahmoud Reda Taha
Keyword(s):  
3D Printing ◽  
Fiber Orientation ◽  
Fiber Reinforced Polymer ◽  
Civil Infrastructure ◽  
Stacking Sequence ◽  
Fiber Reinforced ◽  
Frp Composite ◽  
Reinforced Polymer ◽  
Gfrp Composite ◽  
3D Printed

The use of fiber-reinforced polymer (FRP) composite materials are continuously growing in civil infrastructure due to their high strength, low weight, and manufacturing flexibility. However, FRP is characterized by sudden failure and lacks ductility. When used in construction, gradual failure of FRP components is desired to avoid catastrophic structural collapse. Due to its mechanical orthotropy, the behavior of FRP relies significantly on fiber orientation and stacking sequence. In this paper, a novel multi-angled glass fiber reinforced polymer (GFRP) composite laminate showing pseudo ductile behavior is produced using 3D-printing. This is accomplished by varying fiber orientation angles, stacking sequence, and thickness of lamina. Single-angled GFRP composite specimens were 3D-printed with different fiber orientation angles of 0°, 12°, 24°, 30°, 45°, and 90° using continuous and fused filament techniques. The tension test results of the single-angled specimens were then used to aid the design of multi-angled laminate for potential progressive failure behavior. A 3D finite element (FE) model was developed to predict the response of the experimental results and to provide insight into the failure mechanism of the multi-angled laminate. The experimental observations and the FE simulations show the possibility of producing pseudo ductile FRP-by-design composite using 3D-printing technology, which leads the way to fabricate next-generation composites for civil infrastructure.

Tensile Properties of Epoxy Matrix Reinforced with Fique Fabric

2020 ◽  
Vol 1012 ◽  
pp. 14-19
Author(s):  
Michelle Souza Oliveira ◽  
Fabio da Costa Garcia Filho ◽  
Fernanda Santos da Luz ◽  
Artur Camposo Pereira ◽  
Luana Cristyne da Cruz Demosthenes ◽  
...  
Keyword(s):  
Mechanical Strength ◽  
Polymer Composites ◽  
Natural Fiber ◽  
Volume Fraction ◽  
Fiber Reinforced Polymer ◽  
Epoxy Composites ◽  
Synthetic Fiber ◽  
Fiber Reinforced ◽  
Reinforced Polymer ◽  
Fiber Reinforced Polymer Composites

Composite materials are being extensively studied for ballistic armor. Their main advantage is connected to the possibility of deeply reducing weight and costs by maintaining high performances in terms of strength and security. Epoxy composites are reinforced with natural fibers which are replacing other synthetic reinforcement materials. Composites are prepared using polymers as matrix material because of ease of production with different reinforcements. The mechanical strength of the natural fiber reinforced polymer composites has been compared with synthetic fiber reinforced polymer composites and it is found that for achieving equivalent mechanical strength of the material, the volume fraction of the natural fiber should be much higher than synthetic fiber. This work being an experimental study on untreated “as received” fique fabric-reinforced epoxy composites, to demonstrate the potential of this renewable source of natural fiber for use in a number of applications.

Seismic Strengthening of Reinforced-Concrete Multicolumn Bridge Piers

2007 ◽  
Vol 23 (3) ◽  
pp. 635-664 ◽  
Author(s):  
Chris P. Pantelides ◽  
Jeffrey B. Duffin ◽  
Lawrence D. Reaveley
Keyword(s):  
Reinforced Concrete ◽  
Bridge Pier ◽  
Fiber Reinforced Polymer ◽  
Bridge Piers ◽  
Seismic Rehabilitation ◽  
Frp Composite ◽  
Reinforced Polymer ◽  
Pile Caps ◽  
Rehabilitation Measures

The analysis, seismic rehabilitation measures, and in-situ performance of a reinforced-concrete (RC) bridge pier subjected to quasi-static loads are presented. The bridge was built in 1963 and was designed for gravity and wind but not seismic loads. The reinforcement details are compared with AASHTO requirements for seismic zones 3 and 4. The bridge pier was rehabilitated with steel dowels connecting the piles to the pile caps and RC grade beam connecting the three pile caps; carbon Fiber-Reinforced-Polymer (FRP) composite jackets were used to rehabilitate the columns, cap beam, and T-joints. An analytical model is presented that includes the effects of soil-pile-structure interaction and the seismic rehabilitation measures. Critical events in the experimental performance of the bridge pier are identified. Comparisons are made between the pier's performance and that of other piers tested in situ at the same site that were rehabilitated with incremental measures.

scholarly journals Effect of Different Cutting Depths to the Cutting Forces and Machining Quality of CFRP Parts in Orthogonal Cutting: A Numerical and Experimental Comparison

2018 ◽  
Author(s):  
Farid Miah ◽  
Emmanuel De-Luycker ◽  
Frederic Lachaud ◽  
Yann Landon ◽  
Robert Piquet
Keyword(s):  
Orthogonal Cutting ◽  
Research Work ◽  
Fiber Reinforced Polymer ◽  
Carbon Fiber Reinforced Polymer ◽  
Experimental Comparison ◽  
Homogeneous Material ◽  
Cutting Depth ◽  
Reinforced Polymer ◽  
Thrust Forces

The necessity of understanding the influence of cutting variables in orthogonal cutting of Carbon Fiber Reinforced Polymer (CFRP) is vital because of their significant influences to the quality of manufactured parts. In this present research work the influences of different cutting depths to the cutting and thrust forces have been analyzed and a comparison between an equivalent homogeneous material (EHM) macro-model and experimental results have been made. The reasons of the beginning high cutting and thrust forces have been studied and explained. The post analysis of the experimental machined surfaces has been done to analyze the generated surface roughness and fiber-matrix interface crack generation. Five different cutting depths and four individual fiber orientations have been tested both numerically and experimentally. Significant influence of cutting depths to the cutting force has been found and the surface quality of newly generated machined part is discovered as a function of cutting depth and fiber orientation.

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