Impact resistance, microstructures and digital image processing on self-compacting concrete with hooked end and crimped steel fiber

Mahakavi, P.; Chithra, R.

doi:10.1016/j.conbuildmat.2019.06.001

Cited by 53 publications

(16 citation statements)

References 24 publications

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“…AbdelAleem et al [33] and Ismail and Hassan [34] used hooked end steel fibers with lengths of 35 and 60 mm, while Ding et al [32] used 35 mm hooked end fibers. Most recently, the influence of the use of hybrid combination of crimped and hooked-end steel fibers on the impact resistance of SCC was investigated by Mahakavi and Chithra [35]. They used 70 mm length fibers in dosages of up to 0.75% of hooked-end fiber and up to 0.5% of crimped fiber.…”

Section: Introductionmentioning

confidence: 99%

Repeated drop-weight impact tests on self-compacting concrete reinforced with micro-steel fiber

Abid

Abdul-Hussein

Ayoob

et al. 2020

Heliyon

104

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A B S T R A C TSteel fiber has become a proven material that can significantly alter the behavior of different types of concrete mixtures from brittle to more ductile ones. Rich literature is currently available on the mechanical properties of steel fiber-reinforced self-compacting concrete. However, the investigation of the impact resistance of this material to drop weight is still required to enrich the knowledge about its behavior under different loading conditions. An experimental work was conducted in this research to evaluate the performance of steel fiber-reinforced self-compacting concrete under repeated impact loading using the repeated blows test recommended by ACI 544-2R. The tests investigated the effect of drop weight and drop height in addition to fiber content. Straight microsteel fibers were incorporated in three volumetric contents of 0.5, 0.75 and 1.0% and were compared with a similar plain mixture. The test equipment was adjusted to conduct repeated impact loading from different dropheights and using different drop-weights. The adopted drop-heights were 450, 575 and 700 mm, while the adopted drop-weights were 4.5, 6.0 and 7.5 kg. The combination of the adopted drop-heights and weights composes four loading cases in addition to the standard loading case with a drop-weight and drop-height of 4.5 kg and 450 mm. The inclusion of micro steel fiber was found to significantly increase the impact resistance of selfcompacting concrete with percentage developments ranging from 150 to 860% compared to plain samples. The specimens tested under 4.5 kg and 450 mm drop weight and height exhibited the highest percentage improvement in impact resistance among the five loading cases. The results also showed that the impact ductility of fibrous specimens was up to 24% higher than that of plain specimens.

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Section: Introductionmentioning

confidence: 99%

Repeated drop-weight impact tests on self-compacting concrete reinforced with micro-steel fiber

Abid

Abdul-Hussein

Ayoob

et al. 2020

Heliyon

104

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“…After deciding the SRA dosage to be used in mixtures, properties of reference and SRA-added SCC mixtures were evaluated by focusing mainly on the workability, strength and durability properties after subjected to either direct water submersion or cyclic Na2SO4 solution. Overall, this study concludes that with a proper selection of SRA dosage, SCC mixtures performing well even under very hazardous environments can successfully be produced and be taken advantage of without sacrificing much of workability and/or mechanical properties and risking the occurrence and further development of shrinkage originated cracking [12] Kannan V (2019) In this study, the effects of ternary system on corrosion behavior of self-compacting concrete containing self-combusted rice husk ash (SCRHA) and metakaolin (MK) were studied. For that different mix proportions were prepared by replacing ordinary Portland cement (OPC) with SCRHA and MK.…”

Section: Juliana Petermannmoretti Sandra Nunes Almirsales (2018)mentioning

confidence: 77%

Research on Self Compacting Concrete: A Futuristic Concrete

J¹,

Umamageshwaran²

2019

Int. Res. J. multidiscip. Technovation

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Concrete is most widely used in the construction industry and now-a-days Self compaction concrete is used because of its easy flow able properties and reduction in construction time. Self compacting concrete (SSC) is a basic type of concrete that does not required any kind of compaction or vibration. SCC was first developed by Okamura in Japan during the year 1980. This type of concrete flows easily around the reinforcement and into all corners of formwork and also it saves time, labor and energy. Different admixtures are used to produce effective self compacting concrete (SCC). The workability characteristics of SCC will be evaluated by the following tests like Slump Flow, V- Funnel, L-box Test. Many researches were carried out around the world with regards to different applications on properties and mix proportions. This paper includes the literature reviews related to behavior of self compacting concrete also deals with the strength and behavior of self compacting concrete using fibrous materials and mineral admixtures.

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“…The use of fibres in concrete has grown significantly due to its technical and economic advantages in the construction industry [ 7 ]. Fibres made of steel, glass, carbon, and synthetic fibres of various shapes and surfaces and their effects on the fresh and mechanical properties of SCC have been studied by various researchers [ 8 , 9 , 10 , 11 , 12 ]. The addition of fibres in SCC is said to reduce its workability [ 13 , 14 , 15 ]—that is, its passing and filling ability, as well as its segregation resistance.…”

Section: Introductionmentioning

confidence: 99%

Crack Detection and Localisation in Steel-Fibre-Reinforced Self-Compacting Concrete Using Triaxial Accelerometers

Ramli

Coulson

Martin

et al. 2021

Sensors

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Cracking in concrete structures can significantly affect their structural integrity and eventually lead to catastrophic failure if undetected. Recent advances in sensor technology for structural health monitoring techniques have led to the development of new and improved sensors for real-time detection and monitoring of cracks in various applications, from laboratory tests to large structures. In this study, triaxial accelerometers have been employed to detect and locate micro- and macrocrack formation in plain self-compacting concrete (SCC) and steel-fibre-reinforced SCC (SFRSCC) beams under three-point bending. Experiments were carried out with triaxial accelerometers mounted on the surface of the beams. The experimental results revealed that triaxial accelerometers could be used to identify the locations of cracks and provide a greater quantity of useful data for more accurate measurement and interpretation. The study sheds light on the structural monitoring capability of triaxial acceleration measurements for SFRSCC structural elements that can act as an early warning system for structural failure.

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Impact resistance, microstructures and digital image processing on self-compacting concrete with hooked end and crimped steel fiber

Cited by 53 publications

References 24 publications

Repeated drop-weight impact tests on self-compacting concrete reinforced with micro-steel fiber

Repeated drop-weight impact tests on self-compacting concrete reinforced with micro-steel fiber

Research on Self Compacting Concrete: A Futuristic Concrete

Crack Detection and Localisation in Steel-Fibre-Reinforced Self-Compacting Concrete Using Triaxial Accelerometers

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