Properties of strain hardening ultra high performance fiber reinforced concrete (UHP-FRC) under direct tensile loading

Wille, Kay; El‐Tawil, Sherif; Naaman, Antoine E.

doi:10.1016/j.cemconcomp.2013.12.015

Cited by 666 publications

(269 citation statements)

References 17 publications

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“…This dependence is illustrated in Fig. 12. A similar tendency was also observed by Wille et al (2014). Figure 12 shows that the peak of σ * occurs at V f = 2,7%.…”

Section: Discussion Of the Obtained Micro-and Meso-mechanical Charactsupporting

confidence: 66%

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Modeling of High-Strength FRC Structural Elements with Spatially Non-Uniform Fiber Volume Fraction

Kabele

Sajdlová

Rydval

et al. 2015

ACT

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The research presented in this paper has been motivated by the need to numerically simulate performance of high strength fiber reinforced concrete (HSFRC) structural elements with given spatially variable fiber volume fraction. The intended applications include prediction of load and deformation capacity of HSFRC members with imperfect fiber distribution or design and verification of functionally graded HSFRC members. In order to achieve a predictive capability, modeling is based on micromechanics of fiber debonding, pullout and crack-bridging. The concept of cohesive crack is employed for implementation in the finite element method (FEM). A strong emphasis is placed on the feasibility of the model identification. To this end, a procedure which uses data from conventional notched-beam fracture tests and inverse analysis to determine the model parameters is proposed. The model and the identification method are verified and validated both on micro and macro scales by comparing predicted results with experimental data.

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“…This dependence is illustrated in Fig. 12. A similar tendency was also observed by Wille et al (2014). Figure 12 shows that the peak of σ * occurs at V f = 2,7%.…”

Section: Discussion Of the Obtained Micro-and Meso-mechanical Charactsupporting

confidence: 66%

“…In this way, the model may represent the slight variation of composite tensile strength with changing fiber content, which has been reported in some experimental studies (e.g. Wille et al 2014). The rightside graph in Fig.…”

Section: Discussion Of the Obtained Micro-and Meso-mechanical Charactmentioning

confidence: 98%

Modeling of High-Strength FRC Structural Elements with Spatially Non-Uniform Fiber Volume Fraction

Kabele

Sajdlová

Rydval

et al. 2015

ACT

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“…UHPC has attracted the growing interest of researchers in academia, engineers in the public and private sectors, and contractors across the world due to its highly enhanced mechanical and durability properties in comparison to conventional concrete. Exceptional mechanical properties of compressive strengths in excess of 22 ksi (150 MPa) and tensile strength of about 1-1.5 ksi (7-10 MPa) can be obtained (Wille et al 2014). Design guidelines for UHPC are desired to address critical infrastructure criteria of sustainability, resiliency, and life-cycle design.…”

Section: Introductionmentioning

confidence: 99%

Flexural Design Procedures for UHPC Beams and Slabs

Mobasher

Wang

Yao

2016

First International Interactive Symposium on UHPC

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Abstract:Analytical solutions are developed for deflection calculations of determinate beams subjected to usual loading patterns. The solutions are based on a bilinear moment curvature response characterized by the flexural crack initiation and ultimate capacity based on a deflection hardening behavior. Equations for deflection distribution along the full length of a beam are presented for multiple cases including three-and four-point bending, which can be further extended to uniform load, concentrated moment, and cantilever beams. The proposed equations are capable of tracking the curvature, angle of rotation and deflection at any point along the beam as serviceability based design approach. A parametric study is conducted to examine the effects of moment and curvature at the ultimate stage to moment and curvature at the first crack ratios on the deflection. Results are examined for UHPC beams with different reinforcement types and test configurations. The accuracy of the present model is successfully verified.

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“…With advantages like high-strength and good durability [1,2], it has become one of the directions of cement-based high-performance composite materials development. Since the crack-resist effect of steel fiber during the early age of concrete cracking has been proven to be remarkable [3], it is predicable that SFRC will be widely applied in structures bearing fatigue loads.…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on Tensile Fatigue Strength of Steel Fiber Reinforced Concrete

Lü¹,

Feng²

2015

Proceedings of the International Conference on Advances in Energy, Environment and Chemical Engineering

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Abstract. The tensile fatigue property of steel fiber reinforced concrete (SFRC) was studied. In an axial tensile fatigue experiment, 52 prismatic specimens were tested under various stress conditions. A significant increase is found in the fatigue life of SFRC comparing to that of ordinary concrete. The results also show that the fatigue lives of these specimens are in well agreement with Weibull distribution. Thus a series of fatigue life equations under different survival probabilities were established, as well as the ultimate fatigue strength equation containing two parameters-the ratios of maximum and minimum stress to tensile strength. IntroductionConcrete structures such as crane girder, bridges, sleeper and cement concrete pavement usually bear long-term high-stress-amplitude repeated loads and are frequently subjected to fatigue failure, which has consumedly shortened those structures' service life. Therefore, the research and development on new kinds of concrete materials with high fatigue strength is of great importance to practical engineering.Steel fiber reinforced concrete (SFRC) is a type of concrete reinforced by a certain amount of disorderly distributed steel fibers. With advantages like high-strength and good durability [1,2], it has become one of the directions of cement-based high-performance composite materials development. Since the crack-resist effect of steel fiber during the early age of concrete cracking has been proven to be remarkable [3], it is predicable that SFRC will be widely applied in structures bearing fatigue loads.In this paper, an axial tensile fatigue experiment was conducted to study the tensile fatigue strength of SFRC, in which 52 prismatic specimens of size 100mm*100mm*300mm were tested under various stress conditions. By analyzing data from the experiment, fatigue life equations corresponding to different survival probabilities were established, as well as the ultimate fatigue strength equation containing two parameters-the ratios of maximum and minimum stress to tensile strength.

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Properties of strain hardening ultra high performance fiber reinforced concrete (UHP-FRC) under direct tensile loading

Cited by 666 publications

References 17 publications

Modeling of High-Strength FRC Structural Elements with Spatially Non-Uniform Fiber Volume Fraction

Modeling of High-Strength FRC Structural Elements with Spatially Non-Uniform Fiber Volume Fraction

Flexural Design Procedures for UHPC Beams and Slabs

Experimental Study on Tensile Fatigue Strength of Steel Fiber Reinforced Concrete

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