scholarly journals Performance Evaluation on RC Beams Bonded with FRP Sheet Considering Putty Lining between Concrete Surface and FRP Sheet

2003 ◽  
Vol 52 (12) ◽  
pp. 1458-1463 ◽  
Author(s):  
Hidenori MORIKAWA ◽  
Takahiro YOSHIDA ◽  
Tomoshige KAMOTANI
Keyword(s):  
Performance Evaluation ◽  
Concrete Surface ◽  
Rc Beams ◽  
Frp Sheet

scholarly journals Characterization of Shear Strength of FRP Anchors

2018 ◽  
Vol 199 ◽  
pp. 09008
Author(s):  
Philipp Mahrenholtz ◽  
Jae-Yeol Cho ◽  
Ja-Min Park ◽  
Rolf Eligehausen
Keyword(s):  
Load Capacity ◽  
Concrete Surface ◽  
Shear Loading ◽  
Seismic Retrofitting ◽  
Static Tests ◽  
Cyclic Shear ◽  
Concrete Body ◽  
Seismic Tests ◽  
Frp Sheet

A critical performance aspect of FRP retrofitted concrete elements is the bonding of the FRP sheet to the concrete surface. In general, the performance is limited by the debonding of the loaded FRP sheets from the concrete surface. One method to delay debonding and enhance the capacity is the use of FRP anchors which interlock the FRP sheet to the concrete body. FRP anchors are made of rolled FRP fibres epoxied into in predrilled boreholes. There are a considerable number of studies on FRP strengthening methods available, and also FRP anchors attract more attention of the research community recently. However, to date FRP anchors were tested in a system together with the FRP sheet attached to the concrete, inhibiting the development of general design models. Moreover, the anchor behaviour was never tested for cyclic loads, though most applications are for seismic retrofitting schemes and cyclic shear loading generally results in reduced load capacity due to fatigue failure. To overcome the deficit in knowledge, shear tests on various FRP anchors were carried out. For these tests, FRP anchors were installed in concrete specimens on a separating steel section. The FRP anchor was then directly loaded to determine the capacity of the isolated component. This paper describes the testing approach and procedure. Details on the experimental results for static tests are presented and an outlook on seismic tests is given.

scholarly journals An Effect of Concrete Surface Coating on Internal Stress of ASR-affected RC Beams and RC Columns under Sustained Load

1995 ◽  
Vol 6 (2) ◽  
pp. 9-20
Author(s):  
Hidenori Hamada ◽  
R.N. Swamy ◽  
Shin Tanikawa ◽  
Jaw-Chang Laiw
Keyword(s):  
Internal Stress ◽  
Surface Coating ◽  
Concrete Surface ◽  
Sustained Load ◽  
Rc Beams ◽  
Rc Columns

An Experimental Study on the Performance Evaluation of RC Beams to Calculate the Partial Reduction Coefficient of High Strength Glass Fiber Transparent Composite Panels

2007 ◽  
Vol 348-349 ◽  
pp. 777-780
Author(s):  
In Seok Kang ◽  
Han Seung Lee ◽  
Jae Deog Kim ◽  
Jae Ho Jang ◽  
Jing Yeong Seong
Keyword(s):  
Experimental Study ◽  
Performance Evaluation ◽  
Porous Material ◽  
Steel Frames ◽  
High Strength ◽  
Rc Beams ◽  
Partial Reduction ◽  
Reduction Coefficient ◽  
Transparent Composite ◽  
Rust Inhibitor

As concrete is a type of porous materials, water or air freely permeates concrete. Therefore the durability of concrete decreases. However, porous material with a rust inhibitor may allow permeation of water into concrete. In addition, there may be permeation of water through the rust inhibitor at the location of steel frames. The objective of the study is to investigate the penetration depth of concrete under water forced conditions with pressure.

Experimental study of debond-controlling method for FRP sheet of flexural reinforced RC beams

2006 ◽  
Vol 92 (13) ◽  
pp. 40-46
Author(s):  
Norimitsu Kishi ◽  
Hiroshi Mikami ◽  
Yusuke Kurihashi ◽  
Sumiyuki Sawada
Keyword(s):  
Experimental Study ◽  
Rc Beams ◽  
Frp Sheet

scholarly journals Simulating FRP Debonding From Concrete Surface in FRP Strengthened RC Beams: A Case Study

2017 ◽  
Vol 24 (2) ◽  
pp. 452-466 ◽  
Author(s):  
Davood Mostofinejad ◽  
Sayed Jalil Hosseini
Keyword(s):  
Concrete Surface ◽  
Rc Beams

Evaluation of Local Damages and Residual Performance of Blast Damaged RC Beams Strengthened with Steel Fiber and FRP Sheet

2014 ◽  
Vol 26 (5) ◽  
pp. 627-634 ◽  
Author(s):  
Jin-Young Lee ◽  
Dae-Sung Jang ◽  
Ki-Yeon Kwon ◽  
Young-Soo Yoon
Keyword(s):  
Steel Fiber ◽  
Rc Beams ◽  
Residual Performance ◽  
Frp Sheet

An Effective Framework for Performance Evaluation of Reinforced Concrete Beams Under Impact Loadings

2020 ◽  
Vol 20 (11) ◽  
pp. 2050117
Author(s):  
Wuchao Zhao ◽  
Jihong Ye
Keyword(s):  
Performance Evaluation ◽  
Reinforced Concrete ◽  
Impact Analysis ◽  
Reinforced Concrete Beams ◽  
Effective Model ◽  
Rc Beams ◽  
Probabilistic Framework ◽  
Maximum Displacement ◽  
Damage Degree ◽  
The Impact

Extreme actions, such as impact loads, contain many uncertainties and hence, may not be analyzed by a deterministic approach. In this paper, an effective framework for performance evaluation of reinforced concrete (RC) beams subjected to impact loadings is proposed. For this purpose, a simple yet effective model considering the shear-flexural interaction is developed based on available impact test results. By incorporating the shear effect, both the maximum displacement and impact force are well predicted, by which the proposed model for the impact analysis of RC beams is validated. The joint probability density function (PDF) of two damage indexes, i.e. local drift ratio and overall support rotation, is used to represent the local shear damage degree and the overall flexural damage degree. Taking advantage of the probabilistic framework and the effective model, reliability analysis of the RC beams under different impact scenarios is performed. The damage, described in this study by the joint PDF, is highly affected by the combination of impact mass and velocity. Thus, the mass–velocity ([Formula: see text]–[Formula: see text] diagrams for various performance levels are generated for the damage assessment of the RC beams. Furthermore, the contribution of the local and global responses to the failure probability is quantified using the proposed probabilistic framework.

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