scholarly journals A Comparative Study on the Properties of Natural, Synthetic and Steel Fibre Reinforced Concrete

2021 ◽  
Vol 10 (4) ◽  
pp. 216-224
Author(s):  
Ashadul Islam ◽  
Aojoy Kumar Shuvo ◽  
Showaib Ahmed Chowdhury ◽  
Shayla Sharmin ◽  
Mehedi Hasan
Keyword(s):  
Comparative Study ◽  
Steel Fibre ◽  
Volume Fraction ◽  
Low Cost ◽  
Steel Fibers ◽  
Steel Fibre Reinforced Concrete ◽  
Nylon Thread ◽  
Overall Performance ◽  
Coconut Coir ◽  
The Comparative Study

The use of fibers in concrete at relatively low volume fraction has been gaining rising popularity among researchers for the recent years due to its availability, ability to enhance overall performance and cost effectiveness. Fibers are mainly classified according to their origin. Numerous researches have been carried out with natural and artificial fibers separately to elucidate its effect on the various parameters of concrete. However, a little finding is available about the comparative study among these three distinct types of fibers affecting concrete properties. In this study coconut coir, nylon thread and low-cost galvanized iron wire have been selected as natural, synthetic and steel fibers respectively. Coconut coir and nylon thread were mixed at three different percentage of 1.5%, 2.5% and 3.5% respectively by weight of cement. Steel fibre contents 1.5%, 2.5% and 3.5% respectively by weight of concrete. The results were obtained through an experimental investigation that shows the influence of natural, synthetic and steel fibers on rheological and mechanical properties of concrete. Optimum fibre content was 2.5% where steel fibre shows a maximum 17% and 30% rise in compressive and flexure strength respectively. On the other hand, fibres play a great role with its combining effect on the post cracking ductility and energy absorption of concrete.

scholarly journals Influence of Steel Fibers on the Account of Permeability Aspects of M20 and M40 Grade Concrete

2019 ◽  
Vol 8 (4S2) ◽  
pp. 53-55 ◽  
Keyword(s):  
Reinforced Concrete ◽  
Steel Fibre ◽  
Volume Fraction ◽  
Fiber Reinforced Concrete ◽  
Steel Fibers ◽  
Fibre Reinforced Concrete ◽  
Permeability Test ◽  
Test Apparatus ◽  
Steel Fibre Reinforced Concrete ◽  
Mathematical Equations

Steel Fibre Reinforced Concrete is used in a number of applications such as ground slabs, shotcrete, pavements etc to enhance the performance of plain and reinforced concrete. The study on durability characteristics of fiber reinforced concrete is scanty and hence the study on permeability is essential. This paper deals with the study on the permeability of steel fibre reinforced concrete. Deformed Steel fibres with different volume fraction were used in this study. Permeability was observed to decrease significantly with the addition of fibres and it continued to decrease with the increase in fibre content. Permeability tests were conducted using permeability test apparatus as per IS 3085 -1965. Mathematical equations were derived to determine the permeability using the parameters, volume fraction of fibers,and age of curing.

Properties of Steel Fiber Reinforced Geopolymer

2015 ◽  
Vol 659 ◽  
pp. 143-148 ◽  
Author(s):  
Rachamongkon Wongruk ◽  
Smith Songpiriyakij ◽  
Piti Sukontasukkul ◽  
Prinya Chindaprasirt
Keyword(s):  
Fly Ash ◽  
Flexural Strength ◽  
Silica Fume ◽  
Steel Fibre ◽  
Steel Fiber ◽  
Volume Fraction ◽  
Fibre Volume Fraction ◽  
Fibre Volume ◽  
Steel Fibers ◽  
Flexural Performance

In this study, the mechanical properties of steel fibre reinforced geopolymer (SFRG) are investigated. The geopolymer is consisted of fly ash, silica fume and activator solution, sodium silicate and sodium hydroxide. Five mix proportions of fly ash and silica fume are varied to study the effect of fly ash/silica fume ratios (FA/SF). This experimental series focus mainly on flexural strength and flexural toughness performance of SFRG. Hooked-ends steel fibers are used at 0.5% and 1% by volume fractions. The experiment is carried out based on ASTM C1609 (beam specimens) for flexural performance. The results showed that fibre can significantly enhance the both flexural strength and toughness of geopolymer. The enhancement also increases with the increasing fibre volume fraction.

scholarly journals Investigation on the Effect of Varying Dosages of Steel Fibre on the Strength and Workability Properties Of High Strength Concrete

10.29007/rjbd ◽  
2018 ◽  
Author(s):  
Deepa Sinha ◽  
Arvindkumar Verma
Keyword(s):  
Steel Fibre ◽  
Steel Fiber ◽  
Volume Fraction ◽  
High Strength ◽  
Particle Packing ◽  
Fibre Reinforced Concrete ◽  
Steel Fibres ◽  
Steel Fibre Reinforced Concrete ◽  
Coarse Aggregates ◽  
Packing Method

In this work the strength characteristics of steel fibre reinforced concrete with varying percentages of fibres is found and hence arrived at optimum percentage of steel fibres. M60 grade concrete as per particle packing method was designed with cement, sand and coarse aggregates (10mm and 20mm) which yielded a proportion of 1:1.79:1.11:2.08 with a w/c ratio of 0.30. The steel fibres were added at the rate of 0.5%, 0.75%, 1.0%, 1.25%, 1.50%, 1.75%, and 2.0% by volume fraction. Based on the compressive strength and tensile strength it is concluded that the optimum percentage of steel fiber to be added in the concrete mix is 1% by volume fraction.

scholarly journals SEQUEL OF STEEL SHAVINGS AND FIBRES ON THE CONDUCTIVITY OF CONCRETE AND ITS PERFORMANCE PREMIUMS THEREOF

2021 ◽  
Vol 6 (4) ◽  
Author(s):  
Aarif Nazir ◽  
Shafaqat Bhat ◽  
Haya Qazi
Keyword(s):  
Comparative Study ◽  
Electric Conductivity ◽  
Civil Engineering ◽  
Steel Fibre ◽  
Construction Material ◽  
Evaluation Criteria ◽  
Steel Fibers ◽  
Primary Evaluation ◽  
Economic Construction

Concrete being the most important construction material has found its place in every nook and corner. The concern of Civil Engineering is to assure the most economic construction with optimum strength and serviceability. This paper deals with the use of steel shaving and steel fibre in concrete to enhance its electric conductivity. A comparative study of the properties of concrete was conducted using steel shaving only, containing steel fibre only and containing both steel shaving and steel fibers. Workability and surface finishability was also used as primary evaluation criteria. Effect on Humans due to flow of current through concrete was also considered.

scholarly journals Experimental Study of the Basic Mechanical Properties of Directionally Distributed Steel Fibre-Reinforced Concrete

2018 ◽  
Vol 2018 ◽  
pp. 1-11 ◽  
Author(s):  
Fang-Yuan Li ◽  
Cheng-Yuan Cao ◽  
Yun-Xuan Cui ◽  
Pei-Feng Wu
Keyword(s):  
Mechanical Properties ◽  
Elastic Modulus ◽  
Steel Fibre ◽  
Volume Fraction ◽  
Fibre Reinforced Concrete ◽  
Transverse Deformation ◽  
Fibre Direction ◽  
Steel Fibres ◽  
Steel Fibre Reinforced Concrete ◽  
Ordinary Concrete

Directionally distributed steel fibre-reinforced concrete (SFRC) cannot be widely applied due to the limitations of current construction technology, which hinders research on its mechanical properties. With the development of new construction technologies, such as self-compacting concrete or 3D printing, directionally distributed SFRC has found new developmental opportunities. This study tested, compared, and analysed the basic mechanical properties of ordinary concrete, randomly distributed SFRC, and directionally distributed SFRC. The differences between the damage patterns parallel and perpendicular to the direction of the steel fibres were evaluated in directionally distributed SFRC. When the fibre volume fraction is high and the compression is applied perpendicular to the fibre direction, as the loading increases, the transverse deformation of the specimen is constrained by the fibres. When the compression is applied parallel to the fibre direction, the fibre cannot effectively constrain the transverse deformation of the specimens. When the volume fraction of directionally distributed steel fibres was 1.6%, the elastic modulus of the directionally distributed steel fibres was 39% higher than that of ordinary concrete. Comparison of the experimental values of the elastic modulus with those estimated by existing calculation methods revealed that a modification of the current calculation theories may be required to calculate the changes in the elastic modulus of directionally distributed SFRC with a high volume fraction of steel fibres.

COMPRESSIVE, FLEXURAL AND SPLITTING TENSILE STRENGTHS OF LIGHTWEIGHT FOAMED CONCRETE WITH INCLUSION OF STEEL FIBRE

2015 ◽  
Vol 75 (5) ◽  
Author(s):  
M. A. Othuman Mydin ◽  
N. S. Sahidun ◽  
M. Y. Mohd Yusof ◽  
N. Md Noordin
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Compressive Strength ◽  
Steel Fibre ◽  
Volume Fraction ◽  
Steel Fibers ◽  
Building Construction ◽  
Steel Fibres ◽  
Foamed Concrete ◽  
Low Volume

Lightweight foamed concrete (LFC) application in building construction is rather limited due to its low strength and brittleness. This study has been undertaken to investigate the effects of steel fibers lightweight foamed concrete at a relatively low volume fraction (0.2 % and 0.4 %) on the mechanical properties such as compressive strength, flexural strength and splitting tensile strength. Steel fibres were used as additives. The foamed concrete was designed to achieve the result of effect from volume fraction of steel fibres used with different density of 700 and 1200 kg/m3 at the age of 7, 28 and 60 days. Detail experiments were setup to study the behavior and reaction of additives which is expected to give different results on mechanical properties of lightweight foamed concrete. The result showed, addition steel fibres have greater contributions in terms of mechanical properties in LFC.  

scholarly journals Experimental Study on the Strength Characteristics and Water Permeability of Hybrid Steel Fibre Reinforced Concrete

2014 ◽  
Vol 2014 ◽  
pp. 1-10 ◽  
Author(s):  
M. P. Singh ◽  
S. P. Singh ◽  
A. P. Singh
Keyword(s):  
Tensile Strength ◽  
Compressive Strength ◽  
Reinforced Concrete ◽  
Water Permeability ◽  
Steel Fibre ◽  
Volume Fraction ◽  
Strength Characteristics ◽  
Fibre Reinforced Concrete ◽  
Split Tensile Strength ◽  
Steel Fibre Reinforced Concrete

Results of an investigation conducted to study the effect of fibre hybridization on the strength characteristics such as compressive strength, split tensile strength, and water permeability of steel fibre reinforced concrete (SFRC) are presented. Steel fibres of different lengths, that is, 12.5 mm, 25 mm, and 50 mm, having constant diameter of 0.6 mm, were systematically combined in different mix proportions to obtain mono, binary, and ternary combinations at each of 0.5%, 1.0%, and 1.5% fibre volume fraction. A concrete mix containing no fibres was also cast for reference purpose. A total number of 1440 cube specimens of size 100*100*100 mm were tested, 480 each for compressive strength, split tensile strength, and water permeability at 7, 28, 90, and 120 days of curing. It has been observed from the results of this investigation that a fibre combination of 33% 12.5 mm + 33% 25 mm + 33% 50 mm long fibres can be adjudged as the most appropriate combination to be employed in hybrid steel fibre reinforced concrete (HySFRC) for optimum performance in terms of compressive strength, split tensile strength and water permeability requirements taken together.

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