scholarly journals Behaviour of High Performance Fibre Reinforced Concrete Beam under Cyclic Loading

2016 ◽  
Vol 1 (2) ◽  
pp. 232-236
Author(s):  
N. Parthasarathi ◽  
K.S. Satyanarayanan ◽  
V. Tamilarasu ◽  
M. Prakash
Keyword(s):  
Reinforced Concrete ◽  
Cyclic Loading ◽  
High Performance ◽  
Concrete Beam ◽  
Reinforced Concrete Beam ◽  
Fibre Reinforced Concrete ◽  
High Performance Fibre

Numerical Modelling for Shear Strength Evaluation of a High Performance Fibre Reinforced Concrete Beam According to fib Model Code 2010 Guidelines

2017 ◽  
Author(s):  
Rodolfo Giacomim Mendes de Andrade ◽  
Magno Teixeira Mota ◽  
Michèle Schubert Pfeil ◽  
Romildo Dias Toledo Filho ◽  
Ronaldo Carvalho Battista ◽  
...  
Keyword(s):  
Shear Strength ◽  
Reinforced Concrete ◽  
Numerical Modelling ◽  
High Performance ◽  
Concrete Beam ◽  
Reinforced Concrete Beam ◽  
Fibre Reinforced Concrete ◽  
Model Code ◽  
Model Code 2010 ◽  
High Performance Fibre

scholarly journals Seismic Behaviour of Exterior Reinforced Concrete Beam-Column Joints in High Performance Concrete Using Metakaolin and Partial Replacement with Quarry Dust

2014 ◽  
Vol 2014 ◽  
pp. 1-11 ◽  
Author(s):  
G. R. Vijay Shankar ◽  
D. Suji
Keyword(s):  
Reinforced Concrete ◽  
Cyclic Loading ◽  
High Performance ◽  
Concrete Beam ◽  
High Performance Concrete ◽  
Concrete Structures ◽  
Reinforced Concrete Beam ◽  
Partial Replacement ◽  
Displacement Curve ◽  
Reinforced Concrete Structures

Recent earthquakes have demonstrated that most of the reinforced concrete structures were severely damaged; the beam-column joints, being the lateral and vertical load resisting members in reinforced concrete structures, are particularly vulnerable to failures during earthquakes. The existing reinforced concrete beam-column joints are not designed as per code IS13920:1993. Investigation of high performance concrete (HPC) joints with conventional concrete (CC) joints (exterior beam-column) was performed by comparing various reinforcement detailing schemes. Ten specimens were considered in this investigation and the results were compared: four specimens with CC (with and without seismic detailing), four specimens with HPC (with and without seismic detailing), and two specimens with HPC at confinement joint. The test was conducted for lateral load displacement, hysteresis loop, load ratio, percent of initial stiffness versus displacement curve, total energy dissipation, strain in beam main bars, and crack pattern. The results reveal that HPC with seismic detailing will be better compared with other reinforcements details under cyclic loading and reverse cyclic loading.

scholarly journals Behaviour of ultra-high performance fibre reinforced concrete beam-column joint under cyclic loading

2017 ◽  
Author(s):  
Charles K.S. Moy ◽  
Jun Xia ◽  
Chee Chin ◽  
Jianzhong Liu
Keyword(s):  
Reinforced Concrete ◽  
Cyclic Loading ◽  
High Performance ◽  
Fibre Reinforced Concrete ◽  
Normal Strength Concrete ◽  
Joint Region ◽  
Strength Concrete ◽  
Column Joint ◽  
Normal Strength ◽  
High Performance Fibre

Ultra-high performance fibre reinforced concrete (UHPFRC) has very high compressive strength up to 200 MPa and exhibits strain hardening effects under flexural loading. The bond strength between UHPFRC and steel reinforcement is much better than the normal strength concrete. Therefore, there is a potential to use UHPFRC material at the beam-column joint region to reduce the congestion of reinforcement as well as to improve the seismic resistance of the structure. In this pilot study, the beam column joints made of normal strength concrete and UHPFRC were tested under lateral cyclic loading up to failure using a 500 tonne capacity computer control servo hydraulic machine. The specimen with normal strength concrete failed at the joint region while the specimen with UHPFRC material failed due to yielding of the rebars in the beam sections near the column face and no obvious cracks were observed at the joint area. The specimens with UHPFRC as joint material exhibited higher initial lateral stiffness and achieved slightly higher ultimate load capacity than the specimen with normal strength concrete.

scholarly journals APPLICATION OF ULTRA HIGH PERFORMANCE FIBRE REINFORCED CONCRETE ON EARTHQUAKE RESISTING STRUCTURE

2021 ◽  
Vol 6 (4) ◽  
Author(s):  
Dr. Ajay P. Shelorkar ◽  
Dr. Pradip D. Jadhao
Keyword(s):  
Reinforced Concrete ◽  
High Performance ◽  
Shear Failure ◽  
Reinforced Concrete Beam ◽  
Fibre Reinforced Concrete ◽  
Moment Resisting Frame ◽  
Moment Resisting ◽  
Column Joint ◽  
G 11 ◽  
High Performance Fibre

— Beam column joint is an important component of a reinforced concrete moment resisting frame and should be designed and detailed properly when the frame is subjected to earthquake loading. Failure of beam column joints during earthquake is governed by bond and shear failure mechanism which are brittle in nature. Modern codes provide for reduction of seismic forces through provision of special ductility requirements. A beam column joint has been moulded to the scale of 1:1.5 and the model has been subjected to cyclic loading to find its behavior during earthquake. The earthquake resisting structure is G+11 and has been analyzed using the Seismic Coefficient Method. This paper presents a synthesis of strengthening design of reinforced concrete beam and column by replacing it with Ultra High-Performance Fibre Reinforced Concrete.

scholarly journals Behaviour of UHPFRCs in compression under high stress-rates

2018 ◽  
Vol 183 ◽  
pp. 02005
Author(s):  
Ezio Cadoni ◽  
Matteo Dotta ◽  
Daniele Forni
Keyword(s):  
Reinforced Concrete ◽  
Mechanical Behaviour ◽  
High Performance ◽  
High Stress ◽  
Slight Reduction ◽  
Fibre Reinforcement ◽  
Fibre Reinforced Concrete ◽  
Dynamic Event ◽  
The Matrix ◽  
High Performance Fibre

The paper presents the results obtained on cylindrical Ultra High Performance Fibre Reinforced Concrete specimens with diameter of 30mm and a height of 60mm under compression at high stress rate (1.7–2.3 TPa/s). Four different percentages of fibre reinforcement are considered (1, 2, 3, and 4% fibre content) and compared with the results of the matrix (UHPC). A slight reduction of the strength and fracture time with the introduction of fibres is observed. The experimental results are analysed and discussed with the intent to better understand the mechanical behaviour of UHPFRC materials in case of dynamic event under service loading conditions.

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