Direct tensile responses of aramid fiber reinforced cementitious composites and textile reinforced cementitious composites with 3D spacer fabric at high strain rates

Kim, Sun Gil; Park, Jun Kil; Kim, Dong-Joo

doi:10.1016/j.conbuildmat.2018.02.136

Cited by 16 publications

(12 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…where, A ij is the area of Voronoi facet; h ij is the distance between centroid nodes of the connected Voronoi facet, i and j; a 1 and a 2 are parameters used to represent the relationship between elastic modulus E and Poisson ratio � [30]; for cementitious composites, a 1 ¼ 0.32, a 2 ¼ 1.56. The stiffness of rotational springs is expressed by equation (2). where, J p is the polar moment of inertia of the facet area; and I 22 and I 11 are the two principal moments of inertia of the facet area.…”

Section: Lattice Model Of Cement-based Matrixmentioning

confidence: 99%

“…Textile reinforced cementitious composites (TRC) has various outstanding properties such as larger load-bearing capacity, excellent ductility, thinner thickness, light-weight of components, resistance to corrosion and no magnetic disturbances [1][2][3][4][5]. Textile as reinforcement can significantly improve tensile strength of cementbased material.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Lattice modeling for the influence of geometrical patterns of 3D spacer fabric on tensile behavior of concrete canvas

Zhang

Chen

et al. 2021

Jnl of Sandwich Structures & Materials

View full text Add to dashboard Cite

Tensile behavior of concrete canvas (CC) mainly depends on the geometric patterns of 3D spacer fabric. A lattice model is proposed to model the three-dimensional structure of CC to investigate the influence of geometric patterns of 3D spacer fabric on the tensile behavior of CC. The stress intensity factor is also applied into the lattice model to study the crack development of CC subjected to tensile load. The simulation results are compared to the experiments to verify the model. Finally, the influence of geometric pattern of outer layer and spacer yarns on tensile behavior of CC are simulated based on our proposed lattice model. The results indicate that the tensile strength of CC increases as the loop unit size of outer surface decreases or the amount of spacer yarns increases; the tensile strength of CC with rhombus loop unit of outer surface layer is higher than that of CC with rectangle loop unit. The tensile strength of CC significantly increases with the increasing inclination angle of spacer yarns in 3D spacer fabric. Furthermore, CC specimens subjected to uni-axial tensile exhibit a multi-cracking behavior, the average crack spacing of specimen decreases with the decreasing inclination angle of spacer yarns in tensile direction.

show abstract

Section: Lattice Model Of Cement-based Matrixmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Lattice modeling for the influence of geometrical patterns of 3D spacer fabric on tensile behavior of concrete canvas

Zhang

Chen

et al. 2021

Jnl of Sandwich Structures & Materials

View full text Add to dashboard Cite

show abstract

“…As the reinforcement of the composites, aramid fiber (AF) can be widely used in aerospace, military, electrical, construction, automotive, sporting goods and other fields owing to the characteristics of light weight, high strength, high modulus and excellent temperature resistance. 1–4 However, due to the smooth surface and lack of active groups, the interfacial adhesion between fiber and matrix of the AF reinforced composites was poor, which limits the applications of the final products. 5,6 The interface of the fiber-reinforced composites acts as the bridge for stress transferring, which is essential for achieving the excellent mechanical properties.…”

Section: Introductionmentioning

confidence: 99%

Non-destructive modification of aramid fiber by building nanoscale-coating solution to enhance the interfacial adhesion properties of the fiber-reinforced composites

Wang

Zhang

et al. 2020

Journal of Composite Materials

View full text Add to dashboard Cite

The poor interfacial adhesion between the aramid fiber (AF) and the matrix limits the application of the final composites. In this study, a novel coating method was adopted to modify AF Through metallization/grafting reaction, the copolymer synthesized by the low-temperature poly-condensation of p-phenylenediamine (PPDA), 4,4′-diaminodiphenyl ether (ODA) and terephthaloyl dichloride (TPC), was added into the dimethyl sulfoxide/sodium hydride (DMSO/NaH) solution, and a nano AF solution was obtained. Then epoxy groups were introduced to the amide bond by grafting Epichlorohydrin (ECH). By further grafting on Poly (propylene glycol) bis (2-aminopropyl ether) (PEA), more functional groups were introduced, which could increase the polarity of the fiber and the interfacial adhesion of the composites. The results show that not only the interfacial shear strength (IFSS) and the flexural strength of the aramid-reinforced composites has a significant increase compared with the untreated fibers, but the modification still maintains the mechanical properties of the fiber, indicating that building nanoscale coating solution is a very effective method to achieve non-destructive modification to ehance its interfacial adhesion with epoxy resin.

show abstract

“…Several pieces of research recommended Aramid as a suitable material for concrete elements to increase its capacity under quasistatic loading [16,17]. Besides, Kim et al [18] tested macro-aramid-fibre-reinforced cementitious composites (AR-FRCCs) as well as textile-reinforced cementitious composites with a 3D spacer fabric at high strain rates. Kim et al noted that even though the 3D-TRCCs produced a higher energy absorption capacity than the AR-FRCCs, the energy absorption capacity of the 3D-TRCCs decreased at strain rates higher than 100 s −1 [18].…”

Section: Introductionmentioning

confidence: 99%

“…Besides, Kim et al [18] tested macro-aramid-fibre-reinforced cementitious composites (AR-FRCCs) as well as textile-reinforced cementitious composites with a 3D spacer fabric at high strain rates. Kim et al noted that even though the 3D-TRCCs produced a higher energy absorption capacity than the AR-FRCCs, the energy absorption capacity of the 3D-TRCCs decreased at strain rates higher than 100 s −1 [18]. The main idea behind the application of the fabrics is, firstly, to reinforce the distal face of the target to increase the tensile capacity and, secondly, to reinforce the proximal face of the plate to decrease the spalling from the compaction of the material during the impact.…”

Section: Introductionmentioning

confidence: 99%

Using Textile Aramid Fabrics to Increase the Ballistic Resistance of Ultra-High-Performance Steel-Fibre Reinforced Concrete

2020

View full text Add to dashboard Cite

Thin plates made of Ultra-High-Performance Steel-Fibre-Reinforced Concrete (UHPSFRC) with textile Aramid fabrics were subjected to a projectile impact and its post-test damage was discussed. The damage degrees were the type of the response and crater surface, which was determined by using a 3D scanner. The most common type of ammunition, which is a 7.62 × 39mm calibre with a full-metal jacket and a mild-steel core, was used for all specimens. It was verified experimentally that the UHP-SFRC with textile Aramid fabrics has a better ballistic performance in comparison with its counterpart made of the UHP-SFRC without any textile reinforcement. Also, it was verified that specimens with the point or segment interconnection threads between the front side textile fabrics and rear side textile fabrics have a higher resistance due to the better integrity of the monolithic UHP-SFRC mixture.

show abstract

Direct tensile responses of aramid fiber reinforced cementitious composites and textile reinforced cementitious composites with 3D spacer fabric at high strain rates

Cited by 16 publications

References 30 publications

Lattice modeling for the influence of geometrical patterns of 3D spacer fabric on tensile behavior of concrete canvas

Lattice modeling for the influence of geometrical patterns of 3D spacer fabric on tensile behavior of concrete canvas

Non-destructive modification of aramid fiber by building nanoscale-coating solution to enhance the interfacial adhesion properties of the fiber-reinforced composites

Using Textile Aramid Fabrics to Increase the Ballistic Resistance of Ultra-High-Performance Steel-Fibre Reinforced Concrete

Contact Info

Product

Resources

About