Strength and flexural behavior of steel fiber and silica fume incorporated self-compacting concrete

Saba, A. M.; Khan, Afzal Husain; Akhtar, Mohammad Nadeem; Khan, Nadeem Ahmad; Koloor, Seyed Saeid Rahimian; Petrů, Michal; Radwan, Neyara

doi:10.1016/j.jmrt.2021.03.066

Cited by 75 publications

(26 citation statements)

References 34 publications

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“…Therefore, various research groups have used composites of polymers in which they have reinforced foreign particles of metal, non-metal, ceramics, polymeric fiber, natural fibers, nanopowders, etc. to obtain extensive mechanical properties [ 11 , 12 , 13 , 14 , 15 ].…”

Section: Introductionmentioning

confidence: 99%

On Laminated Object Manufactured FDM-Printed ABS/TPU Multimaterial Specimens: An Insight into Mechanical and Morphological Characteristics

Kumar¹,

Singh²,

Koloor

et al. 2022

Polymers

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Fused deposition modeling (FDM) printing of commercial and reinforced filaments is a proven and well-explored method for the enhancement of mechanical properties. However, little has hitherto been reported on the multi-material components, fused or laminated together into a single specimen by using the laminated object manufacturing (LOM) technique for sustainable/renewable polymers. TPU is one such durable and flexible, sustainable material exhibiting renewable and biocompatible properties that have been explored very less often in combination with the ABS polymer matrix in a single specimen, such as the LOM specimen. The current research work presents the LOM manufacturing of 3D-printed flexural specimens of two different, widely used polymers available viz. ABS and TPU and tested as per ASTM D790 standards. The specimens were made and laminated in three layers. They were grouped into two categories, namely ABS: TPU: ABS (ATA) and TPU: ABS: TPU (TAT), which are functionally graded, sandwiched structures of polymeric material. The investigation of the flexural properties, microscopic imaging, and porosity characteristics of the specimens was made for the above categories. The results of the study suggest that ATA-based samples held larger flexural strength than TAT laminated manufactured samples. A significant improvement in the peak elongation and break elongation of the samples was achieved and has shown a 187% increase in the break elongation. Similarly, for the TAT-based specimen, flexural strength was improved significantly from approximately 6.8 MPa to 13 MPa, which represents a nearly 92% increase in the flexural strength. The morphological testing using Tool Maker’s microscopic analysis and porosity analysis has supported the observed trends of mechanical behavior of ATA and TAT samples.

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Section: Introductionmentioning

confidence: 99%

On Laminated Object Manufactured FDM-Printed ABS/TPU Multimaterial Specimens: An Insight into Mechanical and Morphological Characteristics

Kumar¹,

Singh²,

Koloor

et al. 2022

Polymers

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“…Thus, using recycled steel fibers from waste tires as reinforcement in SCC is advantageous. The results of the study of Saba et al [9] showed that a reduction in workability was obtained from steel fibers while the hardened concrete characteristics, particularly the hardness, will be enhanced. The mechanical behavior of hybrid steel fiber reinforcement and fiber dispersion had been investigated by Akcayand Tasdemir [10].…”

Section: Introductionmentioning

confidence: 99%

The Effect of Scrap Tires Recycled Steel Fibers on Some Hardened Properties of Green SCC

Salam¹,

Khalil²

2022

ETJ

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“…Hybrid materials with diverse properties combined with the main components, provide the perfect synergy of properties that enhance the structural behaviour and lead to an end product with superb features [ 14 , 15 ]. In fibrous composites, fibre hybridization is a way to improve material properties and general toughness, in which two or more fibres are combined as a reinforcement in the polymer matrix [ 6 , 16 ].…”

Section: Introductionmentioning

confidence: 99%

Crashworthiness Assessment of Carbon/Glass Epoxy Hybrid Composite Tubes Subjected to Axial Loads

et al. 2022

Self Cite

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The crashworthiness of composite tubes is widely examined for various types of FRP composites. However, the use of hybrid composites potentially enhances the material characteristics under impact loading. In this regard, this study used a combination of unidirectional glass–carbon fibre reinforced epoxy resin as the hybrid composite tube fabricated by the pultrusion method. Five tubes with different length aspect ratios were fabricated and tested, in which the results demonstrate “how structural energy absorption affects by increasing the length of tubes”. Crash force efficiency was used as the criterion to show that the selected L/D are acceptable of crash resistance with 95% efficiency. Different chamfering shapes as the trigger mechanism were applied to the tubes and the triggering effect was examined to understand the impact capacity of different tubes. A finite element model was developed to evaluate different crashworthiness indicators of the test. The results were validated through a good agreement between experimental and numerical simulations. The experimental and numerical results show that hybrid glass/carbon tubes accomplish an average 25.34 kJ/kg specific energy absorption, average 1.43 kJ energy absorption, average 32.43 kN maximum peak load, and average 96.67% crash force efficiency under quasi-static axial loading. The results show that selecting the optimum trigger mechanism causes progressive collapse and increases the specific energy absorption by more than 35%.

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Strength and flexural behavior of steel fiber and silica fume incorporated self-compacting concrete

Cited by 75 publications

References 34 publications

On Laminated Object Manufactured FDM-Printed ABS/TPU Multimaterial Specimens: An Insight into Mechanical and Morphological Characteristics

On Laminated Object Manufactured FDM-Printed ABS/TPU Multimaterial Specimens: An Insight into Mechanical and Morphological Characteristics

The Effect of Scrap Tires Recycled Steel Fibers on Some Hardened Properties of Green SCC

Crashworthiness Assessment of Carbon/Glass Epoxy Hybrid Composite Tubes Subjected to Axial Loads

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