On the strength and toughness properties of SFRC under static-dynamic compression

Wang, Z.L.; Shi, Ze; Wang, Jianguo

doi:10.1016/j.compositesb.2011.01.027

Cited by 69 publications

(32 citation statements)

References 12 publications

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“…With respect to the rate sensitivity behavior of critical strain, there is yet little agreement among researchers. The tendency obtained in this study, that is, critical strain increases with loading rate, is consistent with that in . While results reported by other scholars show that critical strain barely varies , even decreases with loading rate .…”

Section: Resultssupporting

confidence: 92%

“…Over the years, many kinds of fiber reinforced concrete (FRC) have been developed. The reinforcing material involves steel fiber, synthetic fiber, carbon fiber, basalt fiber, cellulose fiber, ceramic fiber, and plant fiber [1][2][3][4][5][6]. The concrete type includes ordinary concrete, high-strength concrete, geopolymeric concrete, reactive powder concrete, and lightweight aggregate concrete [5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

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Dynamic compressive behavior of basalt fiber reinforced concrete after exposure to elevated temperatures

Ren

Xu²,

2015

Fire and Materials

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SUMMARYThis paper investigated the dynamic behavior of basalt fiber reinforced concrete (BFRC) after elevated temperatures by using a 100-mm-diameter split Hopkinson pressure bar apparatus. Changes in weight and ultrasonic pulse velocity (UPV) were also studied. The results indicate that the weight losses of BFRC before cooling increase with temperature, while a reduction in weight loss value is observed after water cooling. The UPV values of BFRC decrease constantly as temperature increases, and the measured velocities under the same temperature increase with fiber content as temperature exceeds 200°C. For a given temperature, the strain rate, dynamic strength, critical strain, and impact toughness of BFRC increase with impact velocity. For a given impact velocity, the increasing temperature generally leads to an increase in strain rate and critical strain and results in a decrease in dynamic strength and impact toughness except in the case of 200°C. At 200°C, however, a marginal reduction, even an improvement in dynamic strength is observed, and the impact toughness initially decreases, then increases with loading rate when compared with that at room temperature. Basalt fiber is effective in improving the strength performance, deformation capacity, and energy absorption property of concrete after high temperature.

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Section: Resultssupporting

confidence: 92%

Section: Introductionmentioning

confidence: 99%

Dynamic compressive behavior of basalt fiber reinforced concrete after exposure to elevated temperatures

Ren

Xu²,

2015

Fire and Materials

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“…Based on tests conducted on SFRC, Rong et al (2010) reported significant improvement in its toughness with increase in the fiber percentage as well as the strain rate however no appreciable change was observed in DIF (strength). Wang et al (2011) reported the bridging effect of fibers in the failure of SFRC. The failure mode of fibrous specimens with highest fiber percentage was essentially a spalling type failure of concrete.…”

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.

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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.

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“…The mechanical behavior such as compressive strength, tensile strength, flexural strength, impact strength [3][4][5][6] , ductility and flexural toughness of high strength steel fiber reinforced concrete (HSSFRC) is governed by the size, type, fiber volume fraction (V f ), aspect ratio of fibers: l/d ratio (length/diameter ratio), and bond between fibers and the cementitious matrix [3][4][5]7 . The short discrete fibers delay the propagation of microcracks, due to the fact that, fibers bridge these cracks and restrain their widening, thus improve the post-peak ductility and energy absorption capacity [8][9][10] . Because of its superior energy absorption capability, fiber reinforced concrete has been widely used in a variety of civil engineering applications such as precast products, shotcrete, offshore structures, seismic structures, pavements, hydraulic structures, repairs, machine foundations, etc.…”

Section: Introductionmentioning

confidence: 99%

Compression specific toughness of normal strength steel fiber reinforced concrete (NSSFRC) and high strength steel fiber reinforced concrete (HSSFRC)

2011

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Compression toughness tests were carried out on concrete cylinders reinforced with three different aspect ratios of hooked-end steel fibers 60, 75, and 83 and six different percentages of steel fibers 0.5, 1.0, 1.25, 1.5, 1.75, and 2.0% by volume of concrete. The w/c ratio used for the normal strength steel fiber reinforced concrete mixes (NSSFRC) was 0.55, and the water-cementitious ratio (w/c+s) for the high strength fiber reinforced concrete mixes (HSSFRC) was 0.31. For each mix, three test cylinders were tested for compression specific toughness. The effect of fiber reinforcement index: volume of fibers × length/diameter ratio on compression specific toughness and also on the relationship between these two properties is presented in this paper. As a result, (a) equations are proposed to quantify the effect of fibers on compression toughness ratio of concrete in terms of FRI, (b) equations obtained in terms of FRI and compression specific toughness of plain concrete to estimate both compression specific toughness of NSSFRC and HSSFRC (N.m), (c) equations obtained which represent the relationship between compression toughness index and FRI for NSSFRC and HSSFRC, respectively, and (d) equations obtained to quantify the relationship between compression specific toughness index and fiber reinforcement index for NSSFRC and HSSFRC, respectively. The proposed equations give good correlation with the experimental values.

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On the strength and toughness properties of SFRC under static-dynamic compression

Cited by 69 publications

References 12 publications

Dynamic compressive behavior of basalt fiber reinforced concrete after exposure to elevated temperatures

Dynamic compressive behavior of basalt fiber reinforced concrete after exposure to elevated temperatures

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

Compression specific toughness of normal strength steel fiber reinforced concrete (NSSFRC) and high strength steel fiber reinforced concrete (HSSFRC)

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