Influence of steel fibers on the flexural behavior of RC beams with low reinforcing ratios: Analytical and experimental investigation

2019 ◽  
Vol 222 ◽  
pp. 110926 ◽  
Author(s):  
Daniel C.T. Cardoso ◽  
Gabriel B.S. Pereira ◽  
Flávio A. Silva ◽  
Julio J.H. Silva Filho ◽  
Eric V. Pereira
Keyword(s):  
Experimental Investigation ◽  
Steel Fibers ◽  
Flexural Behavior ◽  
Rc Beams

Experimental Investigation on Flexural Bearing Capacity of Concrete Beams Reinforced with CFRP-PCPs Composite Rebars

2013 ◽  
Vol 351-352 ◽  
pp. 541-544
Author(s):  
Jiong Feng Liang ◽  
Ming Hua Hu ◽  
Zhi Ping Deng
Keyword(s):  
Experimental Investigation ◽  
Bearing Capacity ◽  
Concrete Beams ◽  
Service Condition ◽  
Experimental Results ◽  
Flexural Behavior ◽  
Rc Beams ◽  
Flexural Bearing Capacity ◽  
Better Than

The flexural behavior of concrete beams reinforced with CFRP-PCPs composite rebars was studied. Experimental results showed that the performance of CFRP-PCPs composite rebars beams is superior to that of CFRP beams at service and ultimate and comparable and even better than RC beams at service condition. Flexural cracks of concrete beams reinforced with CFRP-PCPs composite rebars are hairline before prism cracking, and they widen after the prism cracking Keywords: CFRP-PCPs, composite rebars, beam, flexural

An experimental investigation on flexural behavior of RC beams strengthened with different techniques

2014 ◽  
Vol 18 (7) ◽  
pp. 2162-2169 ◽  
Author(s):  
M. Mustafa Önal ◽  
Başak Zengin ◽  
Ali Koçak ◽  
Bilge Doran
Keyword(s):  
Experimental Investigation ◽  
Flexural Behavior ◽  
Rc Beams

Susceptibility of strain-hardening cementitious composite to curing conditions as a retrofitting material for RC beams

2021 ◽  
Vol 16 ◽  
pp. 155892502110203
Author(s):  
Mohammad Iqbal Khan ◽  
Galal Fares ◽  
Yassir Mohammed Abbas ◽  
Wasim Abbass ◽  
Sardar Umer Sial
Keyword(s):  
Strain Hardening ◽  
Environmental Conditions ◽  
Carrying Capacity ◽  
Flexural Behavior ◽  
Load Carrying Capacity ◽  
Rc Beams ◽  
Curing Conditions ◽  
Flexural Members ◽  
Load Carrying ◽  
Curing Regime

Strain-hardening cement-based composites (SHCC) have recently been developed as repair materials for the improvement of crack control and strength of flexural members. This work focuses on strengthening and flexural enhancement using SHCC layer in tensile regions of flexural members under three different curing conditions. The curing conditions simulate the effect of different environmental conditions prevailing in the central and coastal regions of the Arabian Peninsula on the properties of SHCC as a retrofitting material. In this investigation, beams with SHCC layer were compared to control beams. The beams with SHCC layer of 50-mm thickness were cast. The results revealed that the flexural behavior and the load-carrying capacity of the normal concrete beam specimens under hot and dry environmental conditions were significantly reduced, lowering the ductility of the section. However, compressive strength is comparatively unaffected. Similarly, the hot curing conditions have also led to a notable reduction in the loading capacity of the beam with SHCC layer with a slight effect on its stiffness. On the other hand, steam-curing conditions have shown improvement in load-carrying capacity and a reduction in section ductility of the beam with SHCC layer. It was found that the structural unit retrofitted with SHCC layer was a curing-regime dependent as the tensile and strain-hardening properties of SHCC are highly sensitive to the alteration in the cement hydration process. A normal curing regime was found effective and satisfying the practical, cost, and performance requirements. Accordingly, a normal curing regime could be implemented to retrofit reinforced concrete (RC) beams with SHCC layers as recommended in the study.

Experimental study on the flexural behavior of RC beams strengthened with prestressed BFRP laminates

2021 ◽  
Vol 233 ◽  
pp. 111801
Author(s):  
Changyuan Liu ◽  
Xin Wang ◽  
Jianzhe Shi ◽  
Lulu Liu ◽  
Zhishen Wu
Keyword(s):  
Experimental Study ◽  
Flexural Behavior ◽  
Rc Beams
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