Experiments on Tensile and Shear Characteristics of Amorphous Micro Steel (AMS) Fibre-Reinforced Cementitious Composites

jeongsu, kim; Cho, Chang‐Geun; Moon, Hyeong-Joo; Kim, Hoyeon; Lee, Seung-Jung; Kim, Wha-Jung

doi:10.1007/s40069-017-0214-7

Cited by 9 publications

(5 citation statements)

References 19 publications

(30 reference statements)

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“…Similar observations were made in [23]. To overcome this issue, metallic auxetic meshes were developed by Kim et al [24,25] and were embedded in the cement matrix to make ACC samples, which were then characterised under uniaxial compression and tension. Strength enhancement and less brittle failure of composites was observed in the ACC samples developed by Kim et al [24,25].…”

Section: Introductionmentioning

confidence: 81%

“…To overcome this issue, metallic auxetic meshes were developed by Kim et al [24,25] and were embedded in the cement matrix to make ACC samples, which were then characterised under uniaxial compression and tension. Strength enhancement and less brittle failure of composites was observed in the ACC samples developed by Kim et al [24,25]. Similarly, braided composites were used in [26][27][28] to develop high strength and high NPR auxetic meshes for civil engineering strengthening applications.…”

Section: Introductionmentioning

confidence: 99%

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Flexural behaviour of cementitious composites embedded with 3D printed re-entrant chiral auxetic meshes

Zahra,

Asad,

Thamboo

2024

Smart Mater. Struct.

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3D printed auxetic metamaterials can be used to make high performing cementitious composites to strengthen existing structures and elements due to their negative Poisson’s ratio behaviour and high energy absorbing characteristics. In this paper, three different re-entrant chiral auxetic (RCA) meshes of various cell geometries and orientations were developed by 3D printing them using poly-lactic acid (PLA) and thermoplastic polyurethane (TPU) filament. The developed meshes were tested under out-of-plane flexure to study their load carrying capacity, ductility and energy absorption characteristics, especially to characterise the best cell orientation. The horizontal cells provided enhanced load carrying and energy absorption characteristics for all three cell geometries for both materials. These RCA meshes were then embedded into low and high strength premix cement mortar matrices to develop Auxetic Cementitious Composites (ACC). In total, forty-two ACC specimens were casted and tested under flexural loading. The results were studied in terms of their failure patterns, load-displacement responses, flexural capacities, ductility and energy absorption. The RCA meshes made of PLA filament showed limited capacity and energy absorption as compared to RCA meshes made of TPU filament due to extended flexibility and resilience provided by TPU meshes. The RCA meshes with a denser cell structure exhibited highest flexural capacity and effective energy absorption of 14,700 kJ/m2 for TPU-RCA mesh embedded into high strength cement mortar matrix. The results obtained in this study have enabled to understand the flexural behaviour of cementitious composites embedded with 3D printed auxetic lattices and to strengthen the existing structures.

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Section: Introductionmentioning

confidence: 81%

Section: Introductionmentioning

confidence: 99%

Flexural behaviour of cementitious composites embedded with 3D printed re-entrant chiral auxetic meshes

Zahra,

Asad,

Thamboo

2024

Smart Mater. Struct.

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“…This is due to the fact that plain concretes fail suddenly once the greatest strength is surpassed while fiber ferroconcrete continues under considerable loads even at deflections considered more than the fracture deflection in plain concrete. This means fiber-reinforced concrete is in a position to sustain load or strain much greater than plain concrete (Kim, J. S, et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

The Study of the Strength Properties of Galvanized Iron (GI) Fiber Reinforced Concrete

Gupta

Chayon

Karmaka

et al. 2020

Journal of the Civil Engineering Forum

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The use of concrete with randomly distributed metallic or non-metallic fiber is now prominent in concrete engineering and metallic fiber has been reported to have a better contribution to concrete mechanical properties. The utilization of locally available galvanized iron or metallic fiber as a bridging material which is a new technique in Bangladesh has the ability to surprisingly improve concrete physical properties. This research was, therefore, conducted to compare the concrete performance of GI fiber and steel fiber using previous literature as well as the suitability of GI fiber as a supplant to steel fiber in the concrete industry. This was achieved through the evaluation of the compression, tension, and brittleness of concrete with ‘Galvanized Iron’ fiber using several cutting lengths of 20 mm and 40 mm with multiple mix proportions including 1.0%, 1.5%, 2.0%, and 2.5% by volume of the concrete. The results showed the fiber with a large cut length of 40 mm and proportion lesser than 2.5% performed well than 20 mm with proportion 2% in reference to the plain concrete. Moreover, the incorporation of a 2.0% proportion of galvanized iron fiber with 40 mm length was observed to have exhibited crowning increment for both concrete compression and tension by 16.1% and 89.2% correspondingly contrasted to the control specimen. A further increase in the percent of fiber content 2% led to a reduction in the compression and tension for both 20 mm and 40 mm lengths while a significant reduction in brittleness for galvanized iron fiber reinforced concrete was observed in contrast to the control specimen. Furthermore, the inclusion of 1.0%–2.5% GI fiber with a 40 mm length reduced concrete brittleness by 56.9% - 65.5 % in comparison with the control specimen. Therefore, the inclusion of galvanized iron (metallic) to enhance the physical properties of concrete was deduced to be one of the startling stratagems

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“…From the past, the idea of composite materials came using horsehair and fiber reinforced concrete was one of the topics of concerned. Eventually, the practice of fiber cementitious or concrete composites mixed with metallic or non-metallic fibers had been greatly made in fields of high rise building and infrastructures in order to ameliorate additional requirements of high ductility, performance and durability (Kim J S. et al;. For fiber-reinforced composites, non-metallic fibers such as synthetic fibers were incorporated to mainly develop high post cracking ductility.…”

Section: Introductionmentioning

confidence: 99%

Scope of Improving Mechanical Characteristics of Concrete Using Natural Fiber as a Reinforcing Material

Gupta

Aftab

Zakaria

et al. 2020

MJCE

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Using natural (Jute) fiber in concrete as a reinforcing material can not only augment the concrete strength but also restrict the use of synthetic fiber which is environmentally detrimental. To achieve this goal, this study evaluated compressive strength, tensile strength and plastic shrinkage of concrete incorporating â€˜Natural (Jute)â€™ fiber of different length (15 mm and 25 mm) with various mix proportions of 0.10%, 0.2%, 0.3% and 0.4% respectively by volume of concrete. Concrete is vulnerable to grow shrinkage cracks because of high evaporation rate in dry and windy conditions. Incorporating of fibers could abate development of this crack. The large length (25 mm) and higher content (ï€¾ 0.3%) of reinforcing materials (jute fiber) result to the lowering of mechanical properties of JFRC compare to plain concrete. But in the incorporation of short (15 mm) and low fiber content (ï‚£ 0.3%), enhances the mechanical properties of the same JFRC. Inclusion of 0.3% (15 mm length) fiber gave maximum enhancement of both concrete compressive and tensile strength by 12.4% and 58% respectively compared to the non-fiber reinforced concrete. A drastic suppression of crack occurrence and area of crack between non-fiber reinforced concrete and fiber reinforced concretes was attained. Experimental results of incorporating 0.1â€“0.4% fiber with 15 mm length in concrete revealed that plastic shrinkage cracks were decreased by 75â€“99% in contrast to non-fiber reinforced concrete. Therefore, it is concluded that the incorporation of jute fiber in making FRC composite would be one of the favorable methods to enhance the performance of concrete.

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Experiments on Tensile and Shear Characteristics of Amorphous Micro Steel (AMS) Fibre-Reinforced Cementitious Composites

Cited by 9 publications

References 19 publications

Flexural behaviour of cementitious composites embedded with 3D printed re-entrant chiral auxetic meshes

Flexural behaviour of cementitious composites embedded with 3D printed re-entrant chiral auxetic meshes

The Study of the Strength Properties of Galvanized Iron (GI) Fiber Reinforced Concrete

Scope of Improving Mechanical Characteristics of Concrete Using Natural Fiber as a Reinforcing Material

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