Fracture energy of ultra-high-performance fiber-reinforced concrete at high strain rates

Tran, Ngoc Thanh; Tran, Tuan Kiet; Jeon, Joong Kyu; Park, Jun Kil; Kim, Dong-Joo

doi:10.1016/j.cemconres.2015.09.011

Cited by 102 publications

(46 citation statements)

References 31 publications

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“…Numerous researchers have investigated the performance of UHPFRC in order to determine the optimum fiber properties such as; fiber type, volumetric content, distribution homogeneity, length and types of steel fibers [11][12][13]. Tran et al [14] investigated the enhancement of fracture parameters of UHPFRC by adding 1-1.5% fibers. They concluded that smooth fibers exhibited higher fracture strength and specific work-of-fracture at high rates than twisted fibers.…”

Section: Introductionmentioning

confidence: 99%

Mechanical properties and fracture parameters of ultra high performance steel fiber reinforced concrete composites made with extremely low water per binder ratios

et al. 2020

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This study examines the effects of high-volume micro-steel fibers (MSF) content on the mechanical properties, fracture parameters, and ductility of ultra-high performance fiber reinforced concrete (UHPFRCs). The MSFs used in this experiment had an aspect ratio of 37.5 with average length of 6 mm. The investigated parameters include very low water/binder (w/b) ratio and fiber content. Sixteen UHPFRC mixes were examined, eight mixes were made with w/b of 0.12 and eight fiber contents (0%, 1%, 1.5%, 2%, 2.5%, 3%, 3.5, 4%) while the other eight mixes were made with the same fiber contents but with w/b of 0.14. The UHPFRC mixes were examined for various strengths (compressive, splitting tensile, flexural), elastic modulus, and fracture parameters. The experimental results showed that the mixture with 4% of MSFs content and 0.12 w/b ratio exhibited a compressive strength of more than 160 MPa, splitting tensile strength higher than 12 MPa, and modulus of elasticity greater than 43 GPa. Moreover, the results also demonstrated that with increasing MSFs content from 0 to 4% the load-displacement behavior, ductility, and all other fracture parameters were improved significantly.

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Section: Introductionmentioning

confidence: 99%

Mechanical properties and fracture parameters of ultra high performance steel fiber reinforced concrete composites made with extremely low water per binder ratios

et al. 2020

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“…Synthetic fibers generally have lower tensile strength and modulus of elasticity than steel fibers; however, they have excellent corrosion resistance [ 10 ]. FRCCs are still more expensive than normal concrete; thus, the use of FRCCs is limited to specific structures, such as high-rise buildings, protection facilities, tunnel lining, and structural foundations [ 11 , 12 ]. To reduce the cost of FRCCs, many researchers have tried to use recycled fibers as short fiber reinforcements in the cementitious matrix [ 13 , 14 , 15 , 16 , 17 , 18 ].…”

Section: Introductionmentioning

confidence: 99%

Pullout Behavior of Recycled Waste Fishing Net Fibers Embedded in Cement Mortar

Park

Kim

2020

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In this study, recycled waste fishing net (WFN) short fibers were proposed to be used as short fiber reinforcements. The pullout resistance of WFN short fibers embedded in cement mortar was investigated by conducting fiber pullout tests. Three types of WFN short fibers and two types of commercial polypropylene (CP) fibers were investigated. To quantitatively compare the pullout resistance of WFN short fibers and CP fibers, pullout parameters, including peak pullout load (peak bond strength), peak fiber stress, slip at peak load, and pullout energy (equivalent bond strength) of the pullout specimens, were analyzed. In addition, the analysis of fiber images, captured by using a stereoscopic digital microscope, before and after pullout tests, elucidated the different mechanisms of fiber pullout corresponding to the type of fibers. The bundled structures of the WFN fibers generated mechanical interaction between fiber and matrix during fiber pullout; consequently, they produced higher bond resistance and more damage on the surface of fibers after the pullout. Therefore, the bundled WFN fibers showed comparable pullout resistance with CP fibers.

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“…The high energy absorption capacity is another unique feature of UHPC in high-rate loading which can prevent the collapsing of infrastructures during the earthquake and cycling loading [15]. To improve the energy absorption capacity of UHPC, the concrete durability [16], the compressive encasing region of the concrete member [17], the percentage of steel reinforcement in the member [18] and the percentage of fibers in the concrete should be increased [19].…”

Section: Introductionmentioning

confidence: 99%

State of the Art: Mechanical Properties of Ultra-High Performance Concrete

2017

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During the past decades, there has been an extensive attention in using Ultra-High Performance Concrete (UHPC) in the buildings and infrastructures construction. Due to that, defining comprehensive mechanical properties of UHPC required to design structural members is worthwhile. The main difference of UHPC with the conventional concrete is the very high strength of UHPC, resulting designing elements with less weight and smaller sizes. However, there have been no globally accepted UHPC properties to be implemented in the designing process. Therefore, in the current study, the UHPC mechanical properties such as compressive and tensile strength, modulus of elasticity and development length for designing purposes are provided based on the reviewed literature. According to that, the best-recommended properties of UHPC that can be used in designing of UHPC members are summarized. Finally, different topics for future works and researches on UHPC’s mechanical properties are suggested.

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Fracture energy of ultra-high-performance fiber-reinforced concrete at high strain rates

Cited by 102 publications

References 31 publications

Mechanical properties and fracture parameters of ultra high performance steel fiber reinforced concrete composites made with extremely low water per binder ratios

Mechanical properties and fracture parameters of ultra high performance steel fiber reinforced concrete composites made with extremely low water per binder ratios

Pullout Behavior of Recycled Waste Fishing Net Fibers Embedded in Cement Mortar

State of the Art: Mechanical Properties of Ultra-High Performance Concrete

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