Structural behaviour of reinforced concrete beams with high yield strength stirrups

2016 ◽  
Vol 68 (23) ◽  
pp. 1187-1199 ◽  
Author(s):  
Jung-Yoon Lee ◽  
Seong-Ho Choi ◽  
Do Hyung Lee
Keyword(s):  
Reinforced Concrete ◽  
Yield Strength ◽  
Concrete Beams ◽  
Reinforced Concrete Beams ◽  
High Yield ◽  
Structural Behaviour ◽  
High Yield Strength

Analytical and experimental study on shear performance of RCC beam elements reinforced with PSWC rebars: a comparative study

2020 ◽  
Vol 11 (3) ◽  
pp. 53
Author(s):  
Shoib Bashir Wani ◽  
Sarvat Gull ◽  
Ishfaq Amin ◽  
Ayaz Mohmood
Keyword(s):  
Reinforced Concrete ◽  
Yield Strength ◽  
Mild Steel ◽  
Ultimate Load ◽  
Concrete Beams ◽  
High Yield ◽  
Ansys Software ◽  
High Yield Strength ◽  
Steel Rebar ◽  
Deformation Level

Early distress in RCC (Reinforced Cement Concrete) structures in the recent times poses a major problem for the construction industry. It is found that in most of cases, distresses in reinforced concrete structures are caused by corrosion of rebar embedded in the concrete. The HYSD (High Yield Strength Deformed)  rebars which are used to offer excellent strength properties is detrimental to durability due to action of ribs as stress concentrators. Nowadays, concept of PSWC rebars (plain surface with wave type configuration rebars, formerly known as C-bars/mild steel rebar with curvy profile) is emerging to have a compromise between strength and durability. This investigation assesses the flexural behaviour of RCC elements reinforced with PSWC rebars. The flexural performance of RC beams of size 1000mm x 150mm x 150mm reinforced with PSWC rebars at 4mm and 6mm deformation level was studied by conducting test as per IS 516-1959 under four point loading. The performance of PSWC bar reinforced elements are compared with beams reinforced with mild steel rebars, HYSD rebars with spiral and diamond rib configuration to assess the viability of PSWC rebars to replace conventional reinforcement. The test results are validated by numerical analysis with the help of ANSYS software. Totally 15 beams are subjected to flexure test and the performance evaluators are first crack load, deflection at first crack load, ultimate load carrying capacity, deflection at ultimate load, load-deflection behaviour, load-strain behaviour and failure pattern. It is found that PSWC rebars as reinforcement in concrete beams enhanced the ductile behaviour of beams as compared to conventional HYSD and mild steel rebar beams. The energy absorbing capacity has increased significantly for beams reinforced with PSWC rebars when compared with conventional HYSD and mild steel rebar beams. The load-deflection behaviour and failure mode of PSWC rebars reinforced concrete beams were found to be similar to that of high yield strength rebars irrespective of deformation level. The analytical investigation from ANSYS software gave good agreement with the experimental results. It is concluded that PSWC bar has the potential to replace conventional HYSD rebar. Further study needs to be done to optimize the profile level and stirrup locations; and usage with high concrete grade for effective exploitation.

Structural behaviour of babadua reinforced concrete beams

1999 ◽  
Vol 13 (4) ◽  
pp. 187-193 ◽  
Author(s):  
Charles K. Kankam ◽  
Brigitte Odum-Ewuakye
Keyword(s):  
Reinforced Concrete ◽  
Concrete Beams ◽  
Reinforced Concrete Beams ◽  
Structural Behaviour

Structural behaviour of pre-damaged reinforced concrete beams strengthened with natural fibre reinforced polymer composites

2020 ◽  
Vol 244 ◽  
pp. 112309 ◽  
Author(s):  
Tidarut Jirawattanasomkul ◽  
Suched Likitlersuang ◽  
Nattamet Wuttiwannasak ◽  
Tamon Ueda ◽  
Dawei Zhang ◽  
...  
Keyword(s):  
Reinforced Concrete ◽  
Polymer Composites ◽  
Concrete Beams ◽  
Natural Fibre ◽  
Reinforced Concrete Beams ◽  
Structural Behaviour ◽  
Reinforced Polymer ◽  
Fibre Reinforced Polymer

scholarly journals Experimental investigation of cracking behaviour of concrete beams reinforced with steel fibres produced in Lithuania

2017 ◽  
Vol 12 (2) ◽  
pp. 82-87 ◽  
Author(s):  
Adas Meškėnas ◽  
Viktor Gribniak ◽  
Gintaris Kaklauskas ◽  
Aleksandr Sokolov ◽  
Eugenijus Gudonis ◽  
...  
Keyword(s):  
Reinforced Concrete ◽  
Residual Strength ◽  
Steel Fibre ◽  
Concrete Beams ◽  
Full Scale ◽  
Reinforced Concrete Beams ◽  
Fibre Reinforced Concrete ◽  
Structural Behaviour ◽  
Steel Fibre Reinforced Concrete ◽  
Straightforward Application

Concrete is the most widely used material for bridge structures in Lithuania. A case study performed by the authors revealed that application of fibres might improve serviceability of such structures. However, adequacy of prediction of the post-cracking behaviour of steel fibre reinforced concrete might be insufficient. The latter issue is closely related to the assessment of the residual strength of steel fibre reinforced concrete. The residual strength, in most cases, is considered as a material property of the cracked concrete. However, in the prediction of the structural behaviour of the concrete members with bar reinforcement, a straightforward application of the residual strength values assessed by using standard techniques might lead to incorrect results. The present study deals with the post-cracking behaviour of structural elements made of concrete with aggregates and fibres provided by Lithuanian companies. Test results of three full-scale and sixteen standard steel fibre reinforced concrete beams with two different content of fibres (23.6 kg/m3 and 47.1 kg/m3) are presented. The full-scale beams were reinforced with high-grade steel bars. Effectiveness of the application of the minimum content of the fibres in combination with bar reinforcement was revealed experimentally.

Safety Assessment of Existing Reinforced Concrete Beams Using Probabilistic Methods at Different Levels

2016 ◽  
Vol 711 ◽  
pp. 958-965 ◽  
Author(s):  
Anindya Roy ◽  
Samanta Robuschi ◽  
Max A.N. Hendriks ◽  
Beatrice Belletti
Keyword(s):  
Reinforced Concrete ◽  
Safety Assessment ◽  
Concrete Beams ◽  
Reinforced Concrete Beams ◽  
Probabilistic Methods ◽  
Analytical Models ◽  
Finite Element Models ◽  
Structural Behaviour ◽  
Reliability Methods ◽  
Different Levels

Several reliability methods available in literature combined with various modelling approaches are compared in this current work in the context of two experimental reinforced concrete (RC) beams. One beam failed in bending while the other beam failed in shear due to diagonal tension. The structural behaviour is described by analytical models and nonlinear finite element models. The changes in predicted reliability of these structures with increasing loads are evaluated by different reliability methods and the results are compared

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