scholarly journals An Optimized Neuro-Bee Algorithm Approach to Predict the FRP-Concrete Bond Strength of RC Beams

IEEE Access ◽  
2021 ◽  
pp. 1-1
Author(s):  
Aman Kumar ◽  
Harish Chandra Arora ◽  
Mazin Abed Mohammed ◽  
Krishna Kumar ◽  
Jan Nedoma
Keyword(s):  
Bond Strength ◽  
Rc Beams ◽  
Bee Algorithm

scholarly journals Prediction of Flexural Capacity of RC Beams Strengthened in Flexure with FRP Fabric and Cementitious Matrix

2015 ◽  
Vol 2015 ◽  
pp. 1-11 ◽  
Author(s):  
Kyusan Jung ◽  
Kinam Hong ◽  
Sanghoon Han ◽  
Jaekyu Park ◽  
Jaehyun Kim
Keyword(s):  
Bond Strength ◽  
Strength Model ◽  
Rc Beams ◽  
Test Results ◽  
Flexural Capacity ◽  
Cementitious Matrix ◽  
Analytical Research ◽  
Fabric Reinforced Cementitious Matrix ◽  
Test Database ◽  
Strengthening Method

This paper presents both experimental and analytical research results for predicting the flexural capacity of reinforced concrete (RC) beams strengthened in flexure with fabric reinforced cementitious matrix (FRCM). In order to assess the efficiency of the FRCM-strengthening method, six beams were strengthened in flexure with FRCM composite having different amounts and layers of FRP fabric and were tested under four-point loading. From test results, it was confirmed that the slippage between the FRP fabric and matrix occurs at a high strain level, and all of the FRCM-strengthened beams failed by the debonding of the FRCM. Additionally, a new bond strength model for FRCM considering the slippage between fabric and matrix was proposed, using a test database to predict the strengthening performance of the FRCM composite. The prediction of the proposed bond strength model agreed well with the debonding loads of the test database.

Bond Strength Evaluation of RC Beams on the Rib Shape of Reinforcing Bars

2011 ◽  
Vol 23 (3) ◽  
pp. 393-400 ◽  
Author(s):  
Geon-Ho Hong ◽  
Jin-Ah Kim ◽  
Oan-Chul Choi
Keyword(s):  
Bond Strength ◽  
Rc Beams ◽  
Reinforcing Bars ◽  
Strength Evaluation

Flexural ductility of reinforced concrete beams with lap-spliced bars

2014 ◽  
Vol 41 (7) ◽  
pp. 594-604 ◽  
Author(s):  
Mehrollah Rakhshanimehr ◽  
M. Reza Esfahani ◽  
M. Reza Kianoush ◽  
B. Ali Mohammadzadeh ◽  
S. Roohollah Mousavi
Keyword(s):  
Reinforced Concrete ◽  
Bond Strength ◽  
Concrete Beams ◽  
Concrete Strength ◽  
Reinforced Concrete Beams ◽  
Transverse Reinforcement ◽  
Rc Beams ◽  
Flexural Ductility ◽  
Ductility Ratio ◽  
Strength And Ductility

In this paper, the flexural ductility of lap-spliced reinforced concrete (RC) beams is experimentally investigated. Twenty-four specimens were designed and manufactured for laboratory experiments. Concrete compressive strength, amount of transverse reinforcement over the splice length, and the diameter of longitudinal bars were selected as the main variables. The ductility of tested specimens is evaluated based on a previously defined ductility ratio. Results show that concrete strength and amount of transverse reinforcement over the splice have major effects on ductility. With an appropriate amount of transverse reinforcement, a satisfactory ductility response for different concrete strengths can be obtained. The CSA-A23.3-04 Standard provisions on bond strength and ductility of lap-spliced RC beams are evaluated and discussed. This study shows that the provisions in predicting the bond strength of lap-spliced concrete beams are adequate but may not achieve a satisfactory performance for ductility. An equation is proposed to achieve the appropriate ductility.

Corrosion effect of the main rebar and stirrups on the bond strength of RC beams

Structures ◽  
2021 ◽  
Vol 32 ◽  
pp. 1444-1454
Author(s):  
Yaser Moodi ◽  
Mohammad Reza Sohrabi ◽  
Seyed Roohollah Mousavi
Keyword(s):  
Bond Strength ◽  
Rc Beams ◽  
Corrosion Effect

scholarly journals Bond Degradation and Residual Flexural Capacity of Corroded RC Beams

2021 ◽  
Author(s):  
Hao Wu
Keyword(s):  
Bond Strength ◽  
Analytical Model ◽  
Experimental Studies ◽  
Reinforced Concrete Beam ◽  
Analytical Models ◽  
Rc Beams ◽  
Flexural Capacity ◽  
Damage State ◽  
Strain Compatibility ◽  
Bond Degradation

An analytical model is developed to predict the residual flexural capacity of corroded RC members. This was established by first developing an analytical model to calculate the residual bond strength at steel-concrete interface. The bond model is then implemented within the framework of the moment resistance method, and a new strain compatibility analysis was developed: to account the analysis of a corroded reinforced concrete beam, to incorporate dependence of the bond response on the stress strain and damage state of the concrete and steel. Method for calculating flexural capacity of corroded RC beams is then proposed, which is based on flexural analysis of RC beams that considers the effect of bond degradation. The predicted results of these models correlated very well with results observed in various experimental studies. This indicates that those developed analytical models tend to estimate conservatively the residual bond strength and flexural capacity of corroded RC beams. .

An Experimental Study on the Strengthening Performance of RC Beams Reinforced by NSM CFRP Tendon According to the Surface Treatment of Tendon

2017 ◽  
Vol 730 ◽  
pp. 435-439
Author(s):  
Woo Tai Jung ◽  
Moon Seoung Keum ◽  
Jae Yoon Kang ◽  
Jong Sup Park
Keyword(s):  
Bond Strength ◽  
Surface Treatment ◽  
Concrete Beams ◽  
Rc Beams ◽  
Flexural Test ◽  
Near Surface ◽  
Bond Performance ◽  
Structural Reinforcement ◽  
Pull Out ◽  
Near Surface Mounted

This study evaluates the bond performance of the CFRP tendon through pull-out test and investigates experimentally the strengthening performance according to the eventual surface treatment of the tendon on concrete beams strengthened by near-surface mounted (NSM) tendon. The pull-out test revealed that the bond strength was improved by 3 times when surface treatment was applied to the tendon. In addition, similar improvement of the bond performances was observed regardless of the execution time of the surface treatment being manually on site or at the factory during the production of the tendon. The flexural test showed that the surface treatment of the CFRP tendon improved the strengthening performance by 13%. Consequently, when using the CFRP tendon featured by low bond strength, it appears that structural reinforcement can be improved by executing beforehand surface treatment of the tendon on site.

Sign in / Sign up

Export Citation Format

Share Document