Dependence of Impact Resistance of Steel Fiber Reinforced Concrete on Aggregate Origin

This paper reports an experimental study on the design of self-compacting lightweight concrete using acidic pumice with different powder materials. For this aim, nine self-compacting lightweight concretes were designed with inclusion of two different fine aggregates and different powder materials. This way, two groups of concrete were designed. First group was composed of single type of aggregate which is acidic pumice from Bitlis Region with barite powder, fly ash powder and pumice powder inclusion, while the second group was generated with river sand as a fine aggregate and acidic pumice from Bitlis Region, as a coarse aggregate with the same powder addition. In the design process, slump-flow, V-funnel and L-box tests were applied to determine the fresh properties of selfcompacting lightweight concrete. After the design, test of compressive strength, which is one of the most important parameters of concrete, was applied to all self-compacting lightweight concretes in early age. Moreover, ultrasound pulse velocity test was also performed on all concrete series at the same ages.

show abstract

“…This technology can not only increase the tensile strength of concrete under load but also increases impact resistance [2].…”

Section: Introductionmentioning

confidence: 99%

Design of Self Compacting Lightweight Concrete Using Acidic Pumice with Different Powder Materials

Bozkurt

Taşkın

2017

Acta Phys. Pol. A

View full text Add to dashboard Cite

show abstract

“…Davraz et al studied foam concretes [12]. Many researchers have also done studies on externally fiber reinforced and internally foam filled thin walled tubes, which have high energy absorbing capacity [13][14][15][16][17][18][19][20]. In this study, we have investigated the deformation behavior of PVC-reinforced and pre-formed 6063-T1 aluminum tubes.…”

Section: Introductionmentioning

confidence: 99%

Effects of Pre-Forming Process and PVC Foam Reinforcement on the Deformation Behavior of Aluminum Tube under Axial Loading

2017

View full text Add to dashboard Cite

In this study, the effects of pre-forming and foam reinforcement on the axial compression behavior of circular thin-walled aluminum tubes were experimentally investigated. Compression tests were performed in a computer controlled test machine at the cross-head speed of 1 mm/s. Pre-forming has changed the folding behavior of tube and increased the energy absorbing capacity 1.26 times that of empty tube. The PVC reinforcement has increased the energy absorbing capacity 1.22 times. PVC reinforcement increases the stability of tube wall deformation; hence it positively affects the energy absorption. The energy absorbing capacity of pre-formed and PVC foam reinforced tubes increase approximately 1.4 times that of empty tube. It was however shown that the reinforcement and pre-forming had no significant effect on the maximum load.

show abstract

“…Previous studies have reported that the flow and mechanical properties of SCC are dependent on the amount, geometry and distribution of steel fibers in concrete [8,9]. Concrete is brittle in nature, whereas amalgamation of steel fibers provides stability, improves its impact resistance, bond strength and makes it ductile [10][11][12].…”

Section: Introductionmentioning

confidence: 99%

An Experimental Study of Bond Behavior of Micro Steel Fibers Added Self-compacting Concrete with Steel Reinforcement

Salam

Room

Iqbal

et al. 2020

Period. Polytech. Civil Eng.

View full text Add to dashboard Cite

The obstruction offered by the surrounding concrete to the pulling out of embedded steel bar is known as bond strength. Steel fibers addition to concrete improves its bond strength by arresting the cracks due to their bridging effect. Bond failure occurs when cracks in the surrounding concrete initiates, providing enough space for bar to be pulled-out. Micro steel fibers efficiently control the formation of micro cracks and may improve bond strength to a greater extent compared to the longer steel fibers. However, it reduces the workability of concrete which is of greater importance in case of self-compacting concrete (SCC). Reduction of workability is less pronounced when straight micro steel fibers are used due to their shorter lengths and straight geometry. Thus, different amount of straight micro steel fibers (0.25 %, 0.5 %, 0.75 %) were incorporated in to SCC to investigate their fresh and mechanical properties with major emphasis on the bond strength. Results indicate that steel fibers addition to SCC improve the splitting tensile strength and bond strength significantly with a maximum increase of 33.5 % and 54.9 % respectively with 0.75 % fibers addition. An equation is proposed for the calculation of bond strength with micro steel fibers addition to SCC with a maximum variation of 4 % to those of experimental values.

show abstract

Dependence of Impact Resistance of Steel Fiber Reinforced Concrete on Aggregate Origin

Cited by 9 publications

References 17 publications

Design of Self Compacting Lightweight Concrete Using Acidic Pumice with Different Powder Materials

Design of Self Compacting Lightweight Concrete Using Acidic Pumice with Different Powder Materials

Effects of Pre-Forming Process and PVC Foam Reinforcement on the Deformation Behavior of Aluminum Tube under Axial Loading

An Experimental Study of Bond Behavior of Micro Steel Fibers Added Self-compacting Concrete with Steel Reinforcement

Contact Info

Product

Resources

About