Fiber-reinforced cement based composites under tensile impact

Banthia, Nemkumar; Chokri, K.; Ohama, Yoshihiko; Mindess, Sidney

doi:10.1016/1065-7355(94)90044-2

Cited by 57 publications

(24 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The sensitivity increases with the volume fraction of spiral fibres, and the 1.5% SFRC material exhibits the most significant rate sensitivity. This is consistent with the findings by Banthia et al (1994) that SFRC specimens with higher dosage of fibres were stronger and tougher under impact. The curves in Figure 19 are best-fit relations according to scattered data of specimens containing different dosages of spiral fibres.…”

Section: Shpb Testing Of Dynamic Compressive and Splitting Tensile Prsupporting

confidence: 82%

Performance of spiral-shaped steel fibre reinforced concrete structure under static and dynamic loads

Hong¹,

Hao²

2015

Proceedings of the Second International Conference on Performance-Based and Life-Cycle Structural Engineering (PLSE 2015)

View full text Add to dashboard Cite

Concrete is the most widely used construction material due to its impressive resistance to compressive load. The major weaknesses of concrete are its brittleness and poor resistance to tensile forces. Intensive number of studies has been conducted to add various types of short discrete fibres into concrete mix to enhance its ductility and post-peak load-bearing capacity. A spiral-shaped steel fibre was recently proposed for reinforcing concrete material with 3D bond components. A series of laboratory tests have been conducted for a comprehensive investigation of the performances of spiral-shaped steel fibre reinforced concrete materials and structures. A fundamental understanding of the bond-slip behaviour of spiral fibres and its mechanism of reinforcing the matrix was achieved by conducting pull-out tests. Compressive and direct tensile tests on Ø100-200 mm concrete specimens with spiral fibres of different geometries were conducted for properly determining fibre geometries to reinforce concrete materials. Split Hopkinson pressure bar (SHPB) tests were carried out to study the dynamic behaviour of spiral steel fibre reinforced concrete (SFRC) with various volume fractions under compression and splitting tension. The corresponding relations of dynamic increase factor (DIF) vs. strain rate were proposed based on test data. Repeated drop-weight impact tests on SFRC beams reinforced with the commonly-used hook-end fibres and spiral fibres were performed. Test results demonstrated the superiority of spiral fibres in bonding and enhancing concrete structural elements in resisting impact loads. The even distributions of spiral fibres in comparison with crimped fibres in concrete matrix were justified by physical examinations. Mesoscale simulations with distinctive consideration of mortar matrix, coarse aggregates and spiral fibres were conducted for statistical derivation of dynamic properties of spiral SFRC. While having demonstrated the promising performances of concrete reinforced with spiral fibres, further studies are also suggested based on the observations and results obtained.

show abstract

Section: Shpb Testing Of Dynamic Compressive and Splitting Tensile Prsupporting

confidence: 82%

Performance of spiral-shaped steel fibre reinforced concrete structure under static and dynamic loads

Hong¹,

Hao²

2015

Proceedings of the Second International Conference on Performance-Based and Life-Cycle Structural Engineering (PLSE 2015)

View full text Add to dashboard Cite

show abstract

“…The diffusion equation based on Fick's second law is a most convenient mathematical model to describe the non-steady diffusion processes of chloride ingress in a concrete structure. By assuming the chloride diffusion coefficient is constant, the well-known analytical solution of the Fick's second law of diffusion is (1) where C(x,t) is chloride concentration at depth x and immersion time t, C s is chloride concentration at the surface, x is the penetration depth, t is the immersion time, and D is chloride diffusion coefficient.…”

Section: Chloride Diffusion Theory Fick's Second Law Of Diffusionmentioning

confidence: 99%

“…The addition of steel fibre significantly improves many engineering properties of mortar and concrete, notably toughness [1,2]. Meanwhile, steel fibre reinforced concrete (SFRC) has high durability due to its superior resistance to crack initiation and propagation, especially under external load [3,4].…”

Section: Introductionmentioning

confidence: 99%

Prediction of Chloride Ingress in Steel Fibre Reinforced Concrete Under Bending Load

Wang¹,

Sun²,

Guo³

et al. 2017

Ceramics - Silikaty

View full text Add to dashboard Cite

show abstract

“…Banthia et al (1994) reported that the polypropylene fibers experience dramatic changes in their properties under high rates of tensile loading. The increased sensitivity of the polypropylene fibers at high strain rate loading conditions was believed to be related to a more viscoelastic character of the polypropylene fibers than steel or carbon fibers.…”

Section: Introductionmentioning

confidence: 99%

Strain Rate Dependent Behavior and Modeling for Compression Response of Hybrid Fiber Reinforced Concrete

Ibrahim

Almusallam

Al-Salloum

et al. 2016

Lat. Am. j. solids struct.

View full text Add to dashboard Cite

This paper investigates the stress-strain characteristics of Hybrid fiber reinforced concrete (HFRC) composites under dynamic compression using Split Hopkinson Pressure Bar (SHPB) for strain rates in the range of 25 to 125 s -1 . Three types of fibers -hooked ended steel fibers, monofilament crimped polypropylene fibers and staple Kevlar fibers were used in the production of HFRC composites. The influence of different fibers in HFRC composites on the failure mode, dynamic increase factor (DIF) of strength, toughness and strain are also studied. Degree of fragmentation of HFRC composite specimens increases with increase in the strain rate. Although the use of high percentage of steel fibers leads to the best performance but among the hybrid fiber combinations studied, HFRC composites with relatively higher percentage of steel fibers and smaller percentage of polypropylene and Kevlar fibers seem to reflect the equally good synergistic effects of fibers under dynamic compression. A rate dependent analytical model is proposed for predicting complete stress-strain curves of HFRC composites. The model is based on a comprehensive fiber reinforcing index and complements well with the experimental results.

show abstract

Fiber-reinforced cement based composites under tensile impact

Cited by 57 publications

References 16 publications

Performance of spiral-shaped steel fibre reinforced concrete structure under static and dynamic loads

Performance of spiral-shaped steel fibre reinforced concrete structure under static and dynamic loads

Prediction of Chloride Ingress in Steel Fibre Reinforced Concrete Under Bending Load

Strain Rate Dependent Behavior and Modeling for Compression Response of Hybrid Fiber Reinforced Concrete

Contact Info

Product

Resources

About