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

Combined effects of wetting–drying cycles and sustained load on the behaviour of FRP-strengthened RC beams

2020 ◽  
Vol 213 ◽  
pp. 110570 ◽  
Author(s):  
Wenshui Tang ◽  
Shan Li ◽  
Yiyan Lu ◽  
Zhen Li
Keyword(s):  
Sustained Load ◽  
Combined Effects ◽  
Rc Beams

Experimental Study on Interfacial Shear Performance of RC Beams Added to Existing RC Columns

2020 ◽  
Vol 24 (11) ◽  
pp. 3388-3396
Author(s):  
Xin-Ling Wang ◽  
Lei-Lei Jin ◽  
Ke Li ◽  
Jun-Tao Zhu
Keyword(s):  
Experimental Study ◽  
Interfacial Shear ◽  
Rc Beams ◽  
Rc Columns ◽  
Shear Performance

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

scholarly journals Evaluation of Concrete Surface Coating Method Applied to San-yo Shinkansen RC Structures

2009 ◽  
Vol 58 (8) ◽  
pp. 691-696 ◽  
Author(s):  
Yoshihiko WATANABE ◽  
Satoshi ARAMAKI ◽  
Yoshifumi MATSUDA ◽  
Takuji YAMADA ◽  
Toyoaki MIYAGAWA
Keyword(s):  
Surface Coating ◽  
Concrete Surface ◽  
Rc Structures ◽  
Coating Method

Influence of Longitudinal Reinforcement Ratio on Shear Strength of RC Slender Beam Under Different Loading Rates

2020 ◽  
Vol 897 ◽  
pp. 91-97
Author(s):  
Halwan Alfisa Saifullah ◽  
Kenichiro Nakarai ◽  
Nobuhiro Chijiwa ◽  
Koichi Maekawa ◽  
Stefanus Kristiawan
Keyword(s):  
Shear Strength ◽  
Loading Rate ◽  
Concrete Structures ◽  
Shear Resistance ◽  
Reinforcement Ratio ◽  
Sustained Load ◽  
Longitudinal Reinforcement ◽  
Rc Beams ◽  
Shear Cracks ◽  
Loading Rates

. A primary current focus in concrete shear design is how to ensure the shear resistance of the concrete structures to withstand the possible adverse creep effects during the service life. All shear-carrying actions are supposed to depreciate due to the enhanced critical shear cracks under sustained loads. However, only a few studies that evaluated the performance of concrete structures failing in shear due to long-term loading. As the longitudinal tensile reinforcement strain influences the shear strength of RC beam, the shear resistance of the beam under sustained load may also be affected by the amount of longitudinal reinforcement. The present study aims at investigating the influence of flexural reinforcement ratio on the shear creep failures of reinforced concrete (RC) beams without stirrups by non-linear finite element analysis. In this study, the numerical model of RC beams with reinforcement ratios varying from 0.4% to 3.2% was evaluated under different loading rates. A loading rate of 1000 and 10000 times slower than the static loading rate were adopted to reveal the creep effects of RC beams.

scholarly journals Shear Strengthening of RC Beams Using Sprayed Glass Fiber Reinforced Polymer

2012 ◽  
Vol 2012 ◽  
pp. 1-20 ◽  
Author(s):  
Sayed Mohamad Soleimani ◽  
Nemkumar Banthia
Keyword(s):  
Carrying Capacity ◽  
Concrete Surface ◽  
Fiber Reinforced Polymer ◽  
Load Carrying Capacity ◽  
Rc Beams ◽  
Glass Fiber Reinforced Polymer ◽  
Shear Strengthening ◽  
Reinforced Polymer ◽  
Glass Fiber Reinforced ◽  
Load Carrying

The effectiveness of externally bonded sprayed glass fiber reinforced polymer (Sprayed GFRP) in shear strengthening of RC beams under quasi-static loading is investigated. Different techniques were utilized to enhance the bond between concrete and Sprayed GFRP, involving the use of through bolts and nuts paired with concrete surface preparation through sandblasting and through the use of a pneumatic chisel prior to Sprayed GFRP application. It was found that roughening the concrete surface using a pneumatic chisel and using through bolts and nuts were the most effective techniques. Also, Sprayed GFRP applied on 3 sides (U-shaped) was found to be more effective than 2-sided Sprayed GFRP in shear strengthening. Sprayed GFRP increased the shear load-carrying capacity and energy absorption capacities of RC beams. It was found that the load-carrying capacity of strengthened RC beams was related to an effective strain of applied Sprayed GFRP. This strain was related to Sprayed GFRP configuration and the technique used to enhance the concrete-FRP bond. Finally, an equation was proposed to calculate the contribution of Sprayed GFRP in the shear strength of an RC beam.

scholarly journals Evaluation of the Uniformity of Protective Coatings on Concrete Structure Surfaces Based on Cluster Analysis

Sensors ◽  
2021 ◽  
Vol 21 (16) ◽  
pp. 5652
Author(s):  
Dunwen Liu ◽  
Wanmao Zhang ◽  
Yu Tang ◽  
Yinghua Jian ◽  
Chun Gong ◽  
...  
Keyword(s):  
Cluster Analysis ◽  
Surface Coating ◽  
Evaluation Method ◽  
Protective Coatings ◽  
Concrete Surface ◽  
Distribution Data ◽  
Positive Contribution ◽  
Infrared Images ◽  
Coating Uniformity ◽  
Durability Of Concrete

With the continuous development of urbanization and industrialization in the world, concrete is widely used in various engineering constructions as an engineering material. However, the consequent problem of durability of concrete structures is also becoming increasingly prominent. As an important additional measure, a protective coating can effectively improve the durability of concrete performance. Moreover, the uniformity of the concrete surface coating will directly affect its protective effect. Therefore, we propose a nondestructive inspection and evaluation method of coating uniformity based on infrared imaging and cluster analysis for concrete surface coating uniformity detection and evaluation. Based on the obtained infrared images, a series of processing and analysis of the images were carried out using MATLAB software to obtain the characteristics of the infrared images of the concrete surface. Finally, by extracting the temperature distribution data of the pixel points on the concrete surface, an evaluation method of concrete surface coating uniformity based on a combination of cluster analysis and hierarchical analysis was established. The evaluation results show that the determination results obtained by this method are consistent with the actual situation. This study has a positive contribution to the testing of concrete surface coating uniformity and its evaluation.

scholarly journals Study on Applicability of Accelerated Deterioration Test for Evaluation of Bond Property in Concrete Surface Coating System

2013 ◽  
Vol 62 (8) ◽  
pp. 524-530
Author(s):  
Takuji YAMADA ◽  
Yoichi TSUKUDA ◽  
Takashi YAMAMOTO ◽  
Minoru KUNIEDA ◽  
Toyoaki MIYAGAWA
Keyword(s):  
Surface Coating ◽  
Concrete Surface ◽  
Coating System ◽  
Bond Property

scholarly journals Evaluation of the Uniformity of Protective Coatings on Concrete Structure Surfaces Based on Cluster Analysis

2021 ◽  
Author(s):  
Dunwen Liu ◽  
Wanmao Zhang ◽  
Yu Tang ◽  
Yinghua Jian ◽  
Chun Gong ◽  
...  
Keyword(s):  
Cluster Analysis ◽  
Surface Coating ◽  
Evaluation Method ◽  
Protective Coatings ◽  
Concrete Surface ◽  
Distribution Data ◽  
Positive Contribution ◽  
Infrared Images ◽  
Coating Uniformity ◽  
Durability Of Concrete

With the continuous development of urbanization and industrialization in the world, concrete is widely used in various engineering constructions as an engineering material. However, the consequent problem of durability of concrete structures is also becoming increasingly prominent. As an important additional measures, protective coating can effectively improve the durability of concrete performance. Moreover, the uniformity of the concrete surface coating will directly affect its protective effect. Therefore, we propose a nondestructive inspection and evaluation method of coating uniformity based on infrared imaging and cluster analysis for concrete surface coating uniformity detection and evaluation. Based on the obtained infrared images, a series of processing and analysis of the images were carried out using MATLAB software to obtain the characteristics of the infrared images of concrete surface. Finally, by extracting the temperature distribution data of the pixel points on the concrete surface, an evaluation method of concrete surface coating uniformity based on a combination of cluster analysis and hierarchical analysis was established. The evaluation results show that the determination results obtained by this method are consistent with the actual situation. This study has a positive contribution to the testing of concrete surface coating uniformity and its evaluation.

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