Effects of Silica Fume and Steel Fibers on Some Mechanical Properties of High-Strength Fiber-Reinforced Concrete

1999 ◽  
Vol 27 (6) ◽  
pp. 380 ◽  
Author(s):  
DR Petersen ◽  
RE Link ◽  
Ö Eren ◽  
K Marar ◽  
T Çelik
Keyword(s):  
Mechanical Properties ◽  
Reinforced Concrete ◽  
Silica Fume ◽  
High Strength ◽  
Fiber Reinforced Concrete ◽  
Steel Fibers ◽  
Fiber Reinforced ◽  
High Strength Fiber

BEHAVIOR OF HIGH STRENGTH FIBER REINFORCED CONCRETE SQUARE COLUMNS WITH HYBRID BARS

2020 ◽  
Vol 7 (1) ◽  
Author(s):  
Saad Al-Taan ◽  
Abduljalil Aldoski
Keyword(s):  
Reinforced Concrete ◽  
Weight Ratio ◽  
High Strength ◽  
Concrete Cover ◽  
Fiber Reinforced Concrete ◽  
Steel Fibers ◽  
Test Results ◽  
Fiber Reinforced ◽  
High Strength Fiber ◽  
And Behavior

The paper presents test results on 20 high-strength fiber reinforced concrete square columns subjected to concentric and eccentric loading. The study aim was to examine the effect of the weight of steel fibers on the strength and behavior of HSC columns under concentric and eccentric loading. All columns were longitudinally reinforced with 4 GFRP bars 6 mm diameter, and two steel bars 10 mm diameter, making the reinforcement ratio (ρg = 0.0181), and steel ties at 64 mm spacing. The studied test variables included the steel fiber weight ratio and the eccentricity. To prevent premature spalling in the concrete cover, it was discovered that it helps to add steel fibers to HSC mixtures in concrete columns. In addition, this also increases the strength of eccentrically loaded reinforced columns compared to that for concentrically loaded columns. The strength and behavior were predicted also by the proposed method. The predicted and the experimental results found to be in a good agreement.

Effect of combined drink cans and steel fibers on the impact resistance and mechanical properties of concrete

2020 ◽  
Vol 14 (2) ◽  
pp. 6734-6742
Author(s):  
A. Syamsir ◽  
S. M. Mubin ◽  
N. M. Nor ◽  
V. Anggraini ◽  
S. Nagappan ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Compressive Strength ◽  
Reinforced Concrete ◽  
Impact Resistance ◽  
Fiber Reinforced Concrete ◽  
Steel Fibers ◽  
Fiber Reinforced ◽  
Indirect Tensile ◽  
The Impact

This study investigated the combine effect of 0.2 % drink cans and steel fibers with volume fractions of 0%, 0.5%, 1%, 1.5%, 2%, 2.5% and 3% to the mechanical properties and impact resistance of concrete. Hooked-end steel fiber with 30 mm and 0.75 mm length and diameter, respectively was selected for this study.  The drinks cans fiber were twisted manually in order to increase friction between fiber and concrete. The results of the experiment showed that the combination of steel fibers and drink cans fibers improved the strength performance of concrete, especially the compressive strength, flexural strength and indirect tensile strength. The results of the experiment showed that the combination of steel fibers and drink cans fibers improved the compressive strength, flexural strength and indirect tensile strength by 2.3, 7, and 2 times as compare to batch 1, respectively. Moreover, the impact resistance of fiber reinforced concrete has increase by 7 times as compared to non-fiber concretes. Moreover, the impact resistance of fiber reinforced concrete consistently gave better results as compared to non-fiber concretes. The fiber reinforced concrete turned more ductile as the dosage of fibers was increased and ductility started to decrease slightly after optimum fiber dosage was reached. It was found that concrete with combination of 2% steel and 0.2% drink cans fibers showed the highest compressive, split tensile, flexural as well as impact strength.    

scholarly journals Resistance of an Optimized Ultra-High Performance Fiber Reinforced Concrete to Projectile Impact

Buildings ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 63
Author(s):  
Anna L. Mina ◽  
Michael F. Petrou ◽  
Konstantinos G. Trezos
Keyword(s):  
Reinforced Concrete ◽  
High Performance ◽  
High Performance Concrete ◽  
High Strength ◽  
Fiber Reinforced Concrete ◽  
Steel Fibers ◽  
Fiber Reinforced ◽  
Depth Of Penetration ◽  
Projectile Impact ◽  
High Performance Fiber

The scope of this paper is to investigate the performance of ultra-high performance fiber reinforced concrete (UHPFRC) concrete slabs, under projectile impact. Mixture performance under impact loading was examined using bullets with 7.62 mm diameter and initial velocity 800 m/s. The UHPFRC, used in this study, consists of a combination of steel fibers of two lengths: 6 mm and 13 mm with the same diameter of 0.16 mm. Six composition mixtures were tested, four UHPFRC, one ultra-high performance concrete (UHPC), without steel fibers, and high strength concrete (HSC). Slabs with thicknesses of 15, 30, 50, and 70 mm were produced and subjected to real shotgun fire in the field. Penetration depth, material volume loss, and crater diameter were measured and analyzed. The test results show that the mixture with a combination of 3% 6 mm and 3% of 13 mm length of steel fibers exhibited the best resistance to projectile impact and only the slabs with 15 mm thickness had perforation. Empirical models that predict the depth of penetration were compared with the experimental results. This material can be used as an overlay to buildings or to construct small precast structures.

scholarly journals THE INFLUENCE OF TENSILE RESISTANCE OF ULTRA HIGH STRENGTH FIBER REINFORCED CONCRETE ON FLEXURAL FAILURE

2008 ◽  
Vol 64 (3) ◽  
pp. 435-448
Author(s):  
Tetsuo KAWAGUCHI ◽  
Makoto KATAGIRI ◽  
Kazuyoshi SHIRAI ◽  
Junichiro NIWA
Keyword(s):  
Reinforced Concrete ◽  
High Strength ◽  
Fiber Reinforced Concrete ◽  
Fiber Reinforced ◽  
Flexural Failure ◽  
High Strength Fiber

Shear Behavior of RC Beams Using Ultra High Strength Fiber Reinforced Concrete Precast Formworks

2012 ◽  
Vol 18 (31) ◽  
pp. 222-229
Author(s):  
Chunyakom Sivaleepunth ◽  
Toshimichi Ichinomiya ◽  
Shinichi Yamanobe ◽  
Tetsuya Kono ◽  
Naoki Sogabe ◽  
...  
Keyword(s):  
Reinforced Concrete ◽  
High Strength ◽  
Shear Behavior ◽  
Fiber Reinforced Concrete ◽  
Rc Beams ◽  
Fiber Reinforced ◽  
High Strength Fiber
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