Research on flexural performance of composited RC beams with different forms of TRC permanent formwork

Structures ◽  
2021 ◽  
Vol 29 ◽  
pp. 1424-1434
Author(s):  
Shiping Yin ◽  
Xi Cong ◽  
Changyu Wang ◽  
Congcong Wang
Keyword(s):  
Rc Beams ◽  
Flexural Performance ◽  
Permanent Formwork

scholarly journals Flexural Performance of RC Beams Strengthened with Externally-Side Bonded Reinforcement (E-SBR) Technique Using CFRP Composites

Materials ◽  
2021 ◽  
Vol 14 (11) ◽  
pp. 2809
Author(s):  
Md. Akter Hosen ◽  
Fadi Althoey ◽  
Mohd Zamin Jumaat ◽  
U. Johnson Alengaram ◽  
N. H. Ramli Sulong
Keyword(s):  
Absorption Capacity ◽  
Experimental Program ◽  
Rc Beams ◽  
Rc Structures ◽  
Functional Changes ◽  
Flexural Strengthening ◽  
Cfrp Laminates ◽  
Flexural Performance ◽  
Design Loads ◽  
Predicted Values

Reinforced concrete (RC) structures necessitate strengthening for various reasons. These include ageing, deterioration of materials due to environmental effects, trivial initial design and construction, deficiency of maintenance, the advancement of design loads, and functional changes. RC structures strengthening with the carbon fiber reinforced polymer (CFRP) has been used extensively during the last few decades due to their advantages over steel reinforcement. This paper introduces an experimental approach for flexural strengthening of RC beams with Externally-Side Bonded Reinforcement (E-SBR) using CFRP fabrics. The experimental program comprises eight full-scale RC beams tested under a four-point flexural test up to failure. The parameters investigated include the main tensile steel reinforcing ratio and the width of CFRP fabrics. The experimental outcomes show that an increase in the tensile reinforcement ratio and width of the CFRP laminates enhanced the first cracking and ultimate load-bearing capacities of the strengthened beams up to 141 and 174%, respectively, compared to the control beam. The strengthened RC beams exhibited superior energy absorption capacity, stiffness, and ductile response. The comparison of the experimental and predicted values shows that these two are in good agreement.

Enhancement of flexural performance of RC beams with steel wire rope by external strengthening technique

2021 ◽  
pp. 1-11
Author(s):  
Yanuar Haryanto ◽  
Ay Lie Han ◽  
Hsuan-Teh Hu ◽  
Fu-Pei Hsiao ◽  
Banu Ardi Hidayat ◽  
...  
Keyword(s):  
Steel Wire ◽  
Wire Rope ◽  
Rc Beams ◽  
Flexural Performance ◽  
External Strengthening ◽  
Strengthening Technique

Simulating the Stiffness of RC Beams Strengthened by CFRP with Secondary Load by ANSYS

2013 ◽  
Vol 444-445 ◽  
pp. 1062-1066
Author(s):  
Li Ping Sun ◽  
Zheng Liu ◽  
Chen Xing Yang ◽  
Ze Fu Zhang
Keyword(s):  
Stress Distribution ◽  
Rc Beams ◽  
Load History ◽  
Flexural Members ◽  
Flexural Performance ◽  
Secondary Load ◽  
Initial Load

The purpose of the paper is to simulate stress distribution of flexural members which is reinforced with CFRP with secondary load using ANSYS, so the flexural performance the beams containing with same layer of CFRP which is affected by different torque can be studied. As a result, the comparison of the stiffness and deflection of beams influenced by different load history (with initial load or not) and different layers of CFRP in this paper will provide guidance for project.

scholarly journals Flexural performance of corroded continuous RC beams rehabilitated by ICCP-SS

2020 ◽  
Vol 232 ◽  
pp. 111556
Author(s):  
Mei-ni Su ◽  
Chaoqun Zeng ◽  
Wan-qian Li ◽  
Ji-Hua Zhu ◽  
Wei-hao Lin ◽  
...  
Keyword(s):  
Rc Beams ◽  
Flexural Performance

Study on Flexural Performance of Damage RC Beams Strengthened with near Surface Mounted FRP Strips

2011 ◽  
Vol 94-96 ◽  
pp. 883-886 ◽  
Author(s):  
Chang Zhou Dong ◽  
Jian Zhong Xia
Keyword(s):  
Reinforced Concrete ◽  
Reinforced Concrete Beams ◽  
Rc Beams ◽  
Near Surface ◽  
Flexural Performance ◽  
Damage Degree ◽  
Reinforced Polymer ◽  
Significant Strength ◽  
Near Surface Mounted ◽  
Frp Strips

The contrast tests of 1 reinforced concrete(RC) beams and 4 RC beams strengthened with near-surface mounted carbon fiber reinforced polymer (FRP) strips have been carried out, under conditions of different damage degree of RC beams. It is mainly conducted to investigate the effects of FRP strips reinforcement of flexural strength. The experimental results indicate that significant strength on the ultimate load and rigidity of reinforced concrete beams can be realized by mounting FRP strips to the beams, and propagation of cracks were reduced obviously.

Experiment Research of Flexural Behavior of Reinforced RC Beams Strengthened with the External Prestressed CFRP Plates

2012 ◽  
Vol 466-467 ◽  
pp. 225-228
Author(s):  
Kan Kang ◽  
Peng Zhang ◽  
Feng Tao Liu
Keyword(s):  
Flexural Behavior ◽  
Utilization Rate ◽  
Rc Beams ◽  
Test Results ◽  
Experiment Research ◽  
Flexural Performance ◽  
Cfrp Plate ◽  
Reinforced Beams ◽  
Bending Capacity ◽  
Prestressed Anchor

Based on the the self-developed prestressed CFRP plate anchorage,the test specimens comprised 5 RC beams strengthened with the way the external prestressed CFRP plates,the research on the different prestressed tension and different span beam about the influence of the bending capacity , ultimate bearing capacity,cross section strain, CFRP strain and deflection of the test reinforced beams on the research. The test results showed that: the externally prestressed CFRP plate can obviously increase of the flexural performance of RC beams, and improve the utilization rate of the strength of the CFRP plate, through the external prestressed anchor of CFRP plate for a tension, reducing the RC beams crack, and improving the ductility of the RC beams.

scholarly journals Experimental assessment of the performance of reinforced concrete beams strengthened with carbon fiber reinforced polymer laminates

2020 ◽  
Vol 39 (1) ◽  
pp. 105-112
Author(s):  
N. Yusuf ◽  
J.M. Kaura ◽  
A. Ocholi ◽  
M. Abbas
Keyword(s):  
Reinforced Concrete ◽  
Failure Modes ◽  
Reinforced Concrete Beams ◽  
Bending Test ◽  
Rc Beams ◽  
Flexural Strengthening ◽  
Cfrp Laminates ◽  
Flexural Performance ◽  
Load Carrying ◽  
Ultimate Load Carrying Capacity

In this study, experimental research is carried out to assess the flexural performance of RC beams strengthened with different amount of CFRP laminates at the tension face. Twelve rectangular RC beams were fabricated and three are un-strengthened and used as reference beams and the remaining nine are strengthened with different amount of CFRP varying from single to triple layers and all are tested to failure under three points bending test. The increase of ultimate strength provided by the bonded CFRP laminates is assessed and failure modes is identified and compared to the un-strengthened RC beams. The results indicated that the flexural capacity of the beams was significantly improved as the amount of the laminates increases that ranged from 20% to 52% increased for single to triple layers laminates. It is concluded that the attachment of CFRP laminates has substantial influence on the performance of CFRP strengthened RC beams. Based on the observed results, recommendations are made that externally application of CFRP laminates can be used for a significant enhancement of the strength deficient RC beams in increasing the ultimate load carrying capacity. Keywords: CPRP laminate, Reinforced concrete, ductility, index, epoxy resin, flexural strengthening

FLEXURAL PERFORMANCE OF RC BEAMS UNDER TROPICAL CLIMATE EFFECTS

2014 ◽  
Vol 1 (1) ◽  
Author(s):  
Nauwal Suki ◽  
Mohd Hisbany Mohd Hashim ◽  
Afidah Abu Bakar
Keyword(s):  
Flexural Strength ◽  
Room Temperature ◽  
Tropical Climate ◽  
The Other ◽  
Bending Test ◽  
Rc Beams ◽  
Near Surface ◽  
Climate Effects ◽  
Flexural Performance ◽  
Temperature Conditions

This study investigates the flexural performance of RC beams under the effects of a tropical climate. Effects from the tropical climate, such as heat and rain throughout the year, may cause deterioration to the surface of concrete. Concrete will gradually erode and may expose the steel inside the beam. If the steel is exposed, it may be oxidized, thus decreasing the strength of the RC structure. To avoid this situation from happening, the Near Surface Mounted (NSM) method of strengthening may be applied as an alternative. Three beams with the size of 125 mm x 300 mm x 1800 mm (width; height; length) were constructed for this study. The first one is a beam without strengthening, while the other two beams were strengthened with CFRP plate horizontally positioned on the tension zones, where one beam is placed under room temperature conditions, while the other is left to endure the conditions of the tropical climate for a period of 6 months. All three beams were then tested under a four-point bending test. Results show that the strengthened beam placed under room temperature conditions has 1% more flexural strength compared to the exposed beam. The exposed beam, however, has 21% more flexural strength compared to the control beam. Thus, NSM is proven to strengthen beams even in a tropical climate.

Sign in / Sign up

Export Citation Format

Share Document