Behaviour of hybrid fibre reinforced concrete beam–column joints under reverse cyclic loads

Ganesan, N.; Indira, P. V.; Sabeena, M

doi:10.1016/j.matdes.2013.08.076

Cited by 97 publications

(30 citation statements)

References 16 publications

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“…Also, the short fiber are very thin and greatly increase the number of fibers used in the concrete, hence they are decreasing the cracks and delaying their coalescence in localized and large cracks this leads to increase the strength of concrete [27][28][29]. The uniform, dense and randomly distributed of micro steel fibers throughout the SIFCON matrix provide a better distribution of both internal and external stresses due to the development of a three-dimensional reinforcement network [30,31]. It is clear that SIFCON specimens made with hybrid fibers were also show higher strength comparing to hooked fibers specimens, which is due to the combined effect of both (hooked ends and straight micro steel fibers) in bridging the micro cracks growth and produce higher bond between fibers and matrix, this consequently lead to higher strength of the SIFCON mixes.…”

Section: Resultsmentioning

confidence: 99%

Effects of Steel Fibers Geometry on the Mechanical Properties of SIFCON Concrete

2020

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This research aims to shed light on the effect of steel fiber shape, length, diameter, and aspect ratio on the mechanical properties of slurry infiltration fiber reinforced concrete (SIFCON). This study comprised of casting and testing three groups of SIFCON specimens with 6% fiber volume fraction. The first group was reinforced with micro steel fiber, other reinforced by hook end steel fibers, while the last group of specimens reinforced by mixing two shape of steel fiber as hybrid fiber (3% micro steel fiber +3% hook end steel fiber). Silica fume was used as a partial replacement (10%) by weight of cement. 3.7% super plasticizer was used to make the slurry liquid enough to penetrate through the fiber network, while the w/c ratio kept constant at 0.33. It was found from the results achieved that the compressive strength, static modulus of elasticity, splitting tensile strength and toughness are extremely affected by the geometry of fibers because the network of fibers formed and their density depends on the size and shape of fibers. Where the values of micro steel fibers are far outweighing the values of hooked end fibers. It was also deduced from empiricism results that combining long and short fibers gives excellent results.

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Section: Resultsmentioning

confidence: 99%

Effects of Steel Fibers Geometry on the Mechanical Properties of SIFCON Concrete

2020

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“…The effect of hybrid fibres on the strength and behaviour of high performance concrete beam column joints subjected to reverse cyclic loads was studied. [16] Addition of fibres in hybrid form improved many of the engineering properties such as the first crack load, ultimate load and ductility factor of the composite. The combination of 1% volume fraction of steel fibres and 0.15% volume fraction of polypropylene fibres gave better performance with respect to energy dissipation capacity and stiffness degradation than the other combinations.…”

Section: Studies On Hybrid Fibre Geopolymer Concretementioning

confidence: 99%

Review on supplymentary cementitious materials used in inorganic polymer concrete

Srinivasreddy

Srinivasan

2017

IOP Conf. Ser.: Mater. Sci. Eng.

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Abstract:This paper presents a review on various supplementary cementitious materials generated from industries are used in concrete, which one is considered a waste material. These materials are rich in aluminosilicates and are activated by sodium/potassium based alkaline solution to form geopolymer concrete. When these geopolymer concrete is used in civil engineering applications has showed better or similar mechanical properties and durability properties than ordinary Portland cement concrete. This paper also given the overview on sodium hydroxide (NaOH) & sodium silicate solution (Na 2 SiO 3 ) ratios, curing adopted for different geopolymer concretes and the effect of adding fibres in geopolymer concretes.

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“…Najveće izmjereno opterećenje i pomak grede izložene cikličkom opterećenju prikazani su na slici 14. Prema slici 14.a slojevito mikroarmirana betonska greda ojačana sa 1,3 % (102,7 kg/m [18]. Kapacitet disipacije energije se može procijeniti na području krivulje progiba za svaki ciklus.…”

Section: Ispitivanje Na Cikličko Opterećenjeunclassified

Ponašanje slojevito mikroarmiranih betonskih greda izloženih cikličkom opterećenju

Lakušić¹

2015

JCE

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Tehničko sveučilište Babol NoshirvaniGrađevinski fakultet m-naghi@nit.ac.ir Izv.prof.dr.sc. Mahmood Rabiee, dipl.ing.stroj. Tehničko sveučilište Babol NoshirvaniStrojarski fakultet rabiee@nit.ac.ir Autori:Izvorni znanstveni rad Maysam Ghasemi Naghibdehi, Morteza Naghipour, Mahmood Rabiee Ponašanje slojevito mikroarmiranih betonskih greda izloženih cikličkom opterećenju Tijekom zadnjih deset godina primjenjuje se slojevito mikroarmiranje kao nova metoda za proizvodnju armiranobetonskih elemenata. U radu su prikazani rezultati ispitivanja svojstava slojevito mikroarmiranih betonskih greda izloženih djelovanju cikličnog opterećenja. Za pripremu uzoraka primijenjena su čelična i polipropilenska vlakna. Betonske grede s potpunim kompozitnim djelovanjem ojačane su sa 0,5 do 2 % čeličnih vlakana, a slojevito mikroarmnirane grede sadrže 1,3 % čeličnih vlakana. Dobiveni rezultati pokazuju da se primjenom slojevitog mikroarmiranja betona povećava disipacija energije uslijed cikličkog opterećenja. Behaviour of functionally graded reinforced-concrete beams under cyclic loading Over the past decade, the functional grading has been applied as a new method for the manufacturing of reinforced-concrete elements. The objective of this investigation is to evaluate performance of the functionally graded reinforcedconcrete beams exposed to cyclic loading. The steel and polypropylene fibres are used for the preparation of samples. Concrete beams with full composite action are strengthened with 0.5 to 2 % of steel fibres, and functionally graded RC beams contain 1.3 % of steel fibres. The use of the functionally graded method to reinforce concrete increases the dissipated energy due to the applied cyclic loading.

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Behaviour of hybrid fibre reinforced concrete beam–column joints under reverse cyclic loads

Cited by 97 publications

References 16 publications

Effects of Steel Fibers Geometry on the Mechanical Properties of SIFCON Concrete

Effects of Steel Fibers Geometry on the Mechanical Properties of SIFCON Concrete

Review on supplymentary cementitious materials used in inorganic polymer concrete

Ponašanje slojevito mikroarmiranih betonskih greda izloženih cikličkom opterećenju

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