Flexural Behavior Investigation of Reinforced Concrete Member with Strengthening Using Strain Hardening Cementitious Composite

2017 ◽  
Vol 16 (7) ◽  
pp. 837-843 ◽  
Author(s):  
Yongxing Zhang
Keyword(s):  
Reinforced Concrete ◽  
Strain Hardening ◽  
Flexural Behavior ◽  
Cementitious Composite ◽  
Concrete Member ◽  
Reinforced Concrete Member

Experimental Study on Flexural Bearing Capacity of Concrete Beams Strengthened with NSM CFRP-PCPs Composite Bars

2014 ◽  
Vol 584-586 ◽  
pp. 908-911
Author(s):  
Li Hong Cheng ◽  
Jiong Feng Liang ◽  
Ming Hua Hu
Keyword(s):  
Experimental Study ◽  
Reinforced Concrete ◽  
Concrete Beams ◽  
Flexural Behavior ◽  
Concrete Member ◽  
Near Surface ◽  
Reinforced Concrete Member ◽  
Bonding Area ◽  
Flexural Bearing Capacity ◽  
Near Surface Mounted

The flexural behavior of concrete beams strengthened with near surface mounted (NSM) CFRP-PCPs composite rebars was studied. Experimental results showed that embedded CFRP-PCPs reinforcement method can effectively improve strength, stiffness and cracks of the reinforced concrete member, and PCPs increased with concrete bonding area, thus avoiding the strip damage of the traditional embedded reinforcement.

Experimental Research on Flexural Behavior of FRP-Reinforced Concrete Beams

2011 ◽  
Vol 250-253 ◽  
pp. 1478-1482
Author(s):  
Zhi Juan Sun ◽  
Chao He Chen ◽  
Ming Jin Chu ◽  
Peng Feng
Keyword(s):  
Reinforced Concrete ◽  
Concrete Beam ◽  
Design Method ◽  
Reinforced Concrete Beam ◽  
Reinforced Concrete Beams ◽  
Fiber Reinforced Polymer ◽  
Flexural Behavior ◽  
Concrete Member ◽  
Reinforced Polymer ◽  
Reinforced Concrete Member

In order to improve the durability of reinforced concrete member, fiber reinforced polymer (FRP)-reinforced concrete member is introduces. Monotonic loading was applied to a reinforced concrete beam and FRP-reinforced concrete beam, in order to investigate the failure progress and characteristics of FRP-reinforced concrete beam.. The presenting study provide a basis for improving the design method for FRP-reinforced concrete member.

Mesoscopic damage evolution on bonding interface and its influence on macroscopic performance deterioration of reinforced concrete member

2019 ◽  
Vol 08 (02) ◽  
pp. 1950005
Author(s):  
Ying Wang ◽  
Yuqian Zheng ◽  
Xuan Wang
Keyword(s):  
Reinforced Concrete ◽  
Bonding Strength ◽  
Element Model ◽  
Bonding Interface ◽  
Interfacial Damage ◽  
Concrete Member ◽  
Steel Bar ◽  
Reinforced Concrete Member ◽  
Bonding Property ◽  
Performance Deterioration

Slip or debonding of bonding interface is the key cause of the performance degradation or failure of the reinforced concrete (RC) member. In this paper, based on Monte Carlo method, a mesoscopic finite element model composed of mortar, coarse aggregate and steel rebar was established to consider the mesoscopic damage on the bonding interface and its influence on macroscopic performance deterioration of RC specimen. The results show that the simulation results fit well with experimental data. Higher initial interfacial damage results in lower bonding strength and smaller final displacement. Higher mortar modulus could greatly improve the initial bonding property and bonding strength, but slightly increase the final damage. Compared with the RC specimen model with plain steel bar, the model with deformed steel bar shows a longer duration of nonlinear increase for drawing force and lower bonding strength. When confinement is applied, the coalescence of damage zones is prevented due to the effect of thread. Therefore, the application of confinement could increase the bonding strength and the initial bonding property.

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