Seismic behavior of hybrid fiber reinforced cementitious composite beam–column joints

Chidambaram, R. Siva; Agarwal, Pankaj

doi:10.1016/j.matdes.2015.07.164

Cited by 102 publications

(31 citation statements)

References 13 publications

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“…Inclusion of steel fibres has been proven to reduce the congestion of reinforcement required in the beam-column joint regions according to new seismic design codes [7][8][9]. Additionally, researchers have tried combining steel fibres with other type of fibres to improve different properties of the concrete mixture [10,11] including the resistance to elevated temperature [12].…”

Section: Introduction and State Of Artmentioning

confidence: 99%

Mechanical Properties of Concrete with Steel and Polypropylene Fibres at Elevated Temperatures

Bošnjak

Sharma

Grauf

2019

Fibers

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Addition of steel fibres to concrete is known to have a significant positive influence on the mechanical properties of concrete. Micro polypropylene (PP) fibres are added to concrete to improve its performance under thermal loads such as in case of fire by preventing the phenomena of explosive spalling. An optimum mixture of steel and micro PP fibres added to concrete may be utilized to enhance both the mechanical and thermal behaviour of concrete. In this work, systematic investigations were carried out to study the influence of elevated temperature on the mechanical properties and physical properties of high strength concrete without and with fibres. Three different mixtures for high strength concrete were used, namely normal concrete without fibres, Steel fibre reinforced concrete and Hybrid fibre reinforced concrete having a blend of hooked end steel fibres and micro PP fibres. The specimens were tested in ambient conditions as well as after exposure to a pre-defined elevated temperature and cooling down to room temperature. For all investigated concrete mixtures the thermal degradation of following properties were investigated: compressive strength, tensile splitting strength, bending strength, fracture energy and static modulus of elasticity. This paper summarizes the findings of the tests performed.

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Section: Introduction and State Of Artmentioning

confidence: 99%

Mechanical Properties of Concrete with Steel and Polypropylene Fibres at Elevated Temperatures

Bošnjak

Sharma

Grauf

2019

Fibers

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“…The tensile strength and split tensile strength were notably higher for a blend of steel and brass coated steel at 1.5% and 2% respectively when the seismic behavior of the beam-column joints for three different fibers namely brass coated steel fiber; polypropylene fiber and hooked end steel fiber were analyzed under cyclic loading. Also the damage tolerance capacity, member ductility and shear capacity were found higher than the conventional concrete [36]. Altogether hybrid steel fibers are good enough to uplift the mechanical and durability properties of the concrete composite.…”

Section:  Steel-steel Hybrid Fibermentioning

confidence: 85%

Categorization of Fibers and their Influence on Concrete Properties

2019

IJRTE

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Incorporation of the different types of fibers in the concrete composite has become a conventional approach in the recent era. The culminating enhancement of various properties of the cement and concrete composite by the instigation of the fibers and their feasibility to the various environmental conditions make them stand out in the present scenario. Furthermore, the hybrid fibers in various combinations have a synergetic effect which causes the advancement of two more parameters of the concrete composites. This paper lines up the transformations in the physical, chemical and the mechanical properties of fiber reinforced concrete. This provides the abbreviation of the classification of fibers and the impact of mono fibers and hybrid fibers as well in the concrete composites. Thus the different literature reviews throw light on the necessity, choosing the right fiber and their consecutive effects on the type of concrete composite used. Steel fibers and polypropylene fibers were noted to improve the mechanical strength to an extend whereas glass and carbon fibers tend to have the same effect in lower level which had also become a hazardous one owing to the various chemical reactions. Though the natural fibers have good durable properties, it is used less due to its degradable nature

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“…RPC as an ultra-high-performance fiber reinforced concrete (UHPFRC) is catching more attention nowadays due to its durability and extraordinary strength characteristics [1,12,13]. Lately, many researchers have illustrated that the utilizing of steel fibers as reinforcement has brought good results to overcome the fragility of concrete [12,[14][15][16][17]. Thus, UHPFRC is a good alternative option to construct oil containers for its excellent properties including high-pressure resistance and tensile resistance in addition to its impermeable characteristics [1,[18][19][20][21].…”

Section: Introductionmentioning

confidence: 99%

RPC Effect of Crude Oil Products on the Mechanical Characteristics of Reactive-Powder and Normal-Strength Concrete

Tuama

Kadhum

Alwash

et al. 2020

Period. Polytech. Civil Eng.

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This study includes detailed information on the mechanical characteristics of the hardened concrete mix for normal concrete (NSC) and reactive powder concrete (RPC) after exposure to crude oil products. Two types of crude oil products (kerosene and gas oil) were investigated after exposure for a period of 180 days. The experimental program consisted of three sets of NSC and RPC specimens; after curing all concrete specimens for 28 days and 2 days to dry in the air, the first set of specimens was immersed in kerosene for 180 days and the second set was immersed in gas oil for the same age, while the third set was left in the air as a reference set (cured normally for 28 days and tested at the age of 180 days). The results showed that the mechanical characteristics of the RPC mix were not highly affected after exposure to each type of crude oil products, where it lost about (3.41–6.32 %) compared with reference RPC mix. While the NSC mix lost about (13.82–21.95 %) of its mechanical characteristics compared with reference NSC mix after exposure to crude oil products for the same period.

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Seismic behavior of hybrid fiber reinforced cementitious composite beam–column joints

Cited by 102 publications

References 13 publications

Mechanical Properties of Concrete with Steel and Polypropylene Fibres at Elevated Temperatures

Mechanical Properties of Concrete with Steel and Polypropylene Fibres at Elevated Temperatures

Categorization of Fibers and their Influence on Concrete Properties

RPC Effect of Crude Oil Products on the Mechanical Characteristics of Reactive-Powder and Normal-Strength Concrete

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