Here mentioned presentation is about the introduction of fiber reinforced concrete.

1. G. H. Raisoni Collegeof engineering& management
An Autonomous Institute Affiliated to Savitribai Phule Pune University
Sr. Name Roll No.
1 Renuka Sushil Hulsurkar BCEA06
2 Saurabh Rajabhau Thokane BCEA14
3 Rushikesh Rajkumar Alamkere BCEA22
4 Vaibhav Sanjay Kosalge BCEA61
B.Tech Project Phase – II
Guide :- Archana Mali
Second Project Review
Date: 27th Feb 2021

2. Modelling of Steel
fiber reinforced
Concrete.
TITLE OF PROJECT

3.  Abstract
1. In the era of urbanization and rapidly increasing population, the demand of construction materials
especially cement concrete is high. In order to satisfy these demand various modifications, research is
been carried out in construction industry. In this project Steel fibers are used with traditional Concrete
ingredients to increase its mechanical properties.
2. Steel Fiber reinforced concrete (SFRC) has proven effective and superior in comparison to the
traditional concrete on parameters such as Tensile strength, Modulus of rupture, better ductility and
crack resistance.
3. It starts exhibiting a better performance not only under static and quasi-statically applied loads, but
also under fatigue, shock, and impulsive loadings. Nevertheless, this improvement depends heavily on
the pouring methods and the procedure used in the SFRC placement and its compaction in the molds.
4. Although, reinforcing building materials to improve their workability is an ancient concept, modern
construction practices of use of fiber in concrete began in early 1960s. And is been used extensively
from last three decades.
5. Hence, realizing the improved properties of fiber reinforced concrete this project focusses on its usage,
advantages and applications

4.  Literature Review
1. Milind V. Mohod [2012] Cement concrete is the most extensively used construction material in the world. The
reason for its extensive use is that it provides good workability and can be moulded to any shape. Ordinary cement
concrete possesses a very low tensile strength, limited ductility and little resistance to cracking. Internal micro
cracks, leading to brittle failure of concrete. In this modern age, civil engineering constructions have their own
structural and durability requirements, every structure has its own intended purpose and hence to meet this
purpose, modification in traditional cement concrete has become mandatory. It has been found that different type
of fibers added in specific percentage to concrete improves the mechanical properties, durability and serviceability
of the structure. It is now established that one of the important properties of Steel Fiber Reinforced Concrete (SFRC)
is its superior resistance to cracking and crack propagation. The optimum fiber content while studying the
compressive strength of cube is found to be 1% and 0.75% for flexural strength of the beam. Also, it has been
observed that with the increase in fiber content up to the optimum value increases the strength of concrete. Slump
cone test was adopted to measure the workability of concrete.
2. Ali Amin and Stephen J. Foster [2016], Despite the increased awareness of Steel Fibre Reinforced Concrete (SFRC) in
practice and research, SFRC is yet to find common application in load bearing or shear critical building structural
elements. Although the far majority of studies on SFRC have focused on members containing fibres only, in most
practical applications of SFRC construction, structural members made of SFRC are also reinforced with conventional
reinforcing steel for shear. The tests have been analysed along with complete material characterisation which quantify
the post-cracking behaviour of the SFRC.

5.  Problem Definition & Methodology
1. Performing tests on steel fiber reinforced concrete and analysing results
with the results of tests performed on normal concrete.
2. The tests such as:
i. Compressive Strength Test .
ii. Spilt Tension Test
iii. Flexural strength Test
3. Analysis of the steel fibers in concrete when it is in tension.
4. The results for SFRC comparison with the results for normal concrete.

6.  Applications
1. The applications of Steel fiber reinforced concrete
are for so varied and so widespread, that it is
difficult to categories them. Following are the
common applications of steel fiber reinforced
concrete constructions : Tunnel linings, Manholes,
Risers, Burial Vaults, Septic Tanks, Curbs, Pipes,
Covers, Sleepers.
2. Steel fiber reinforced concrete is a low cost solution
for uncracked section design of concrete members.
Use of steel fiber reinforcement in concrete
enhances the ability of structural members to carry
significant stresses. The use of fibers increases the
toughness of concrete under any type of loads.
Fibers in concrete has the ability absorb more
energy.

7.  Applications
A) Highway And Airfield Pavements:
I. Repair of existing pavement.
II. Reduction in pavement thickness.
III. Increase in resistance to impact.
IV. Increase in transverse and longitudinal joint spacing.
V. Smooth riding surface.
B) Fibers Shotcrete (FRS):
I. The inclusion of steel fibers in shotcrete improves many of the mechanical
properties of the basic material viz the toughness, impact resistance, shear
strength, flexural strength, and ductility factor.
II. Rock stabilization, tunnels, dams, mines.
III. Bridges arches, dome structures, power-house.
IV. Stabilization of slopes to prevent landslides repair of deteriorated concrete
surface, water channel etc.

8.  Expected Outcomes:
1. The use of steel-fibers in flexural elements is less significant in increasing the
ultimate moment capacity when the element is designed as an under-
reinforced beam. The use of these fibers however, increases the cracking
moment substantially.
2. Concerning the confinement of the compression area by the stirrups in
combination with the use of steel-fibers, it can be concluded that confining the
compression zone of a member in flexure exclusively using stirrups will
enhance the ultimate moment capacity of the member substantially; the
extension of these stirrups up till the extreme fibers in compression is
ineffective.
3. The confinement of the tension area does not have impact on the moment
behavior of the element. The stiffness and reinforcement ratio of the confining
stirrups increases the level at which the first cracking in the element occur.

9.  Expected Conclusions
In this paper, the compressive strength, splitting tensile strength, and flexural
strength of steel fiber-reinforced concrete made by different mix methods were
analyzed. The main conclusions are as follows:
(1) With the increase in steel fiber content, all of these mechanical properties such as
compression strength, flexural strength, and splitting tensile strength improve
gradually; especially for flexural strength and splitting tensile strength, the steel fiber
reinforcement effect is obvious. At the same fiber content, reinforcement effect of
mechanical properties of high-strength concrete is better.
(2) The vibratory mixing method can make the steel fiber distribute uniformly in the
concrete; as a result, comparing to traditional mixing, the vibratory mixing method
can improve the compressive strength, splitting tensile strength, and flexural
strength effectively. For example, compressive strength can be improved by 10%,
splitting tensile strength can be improved by 15%, and flexural strength can be
improved 12%.

10. References:
Milind V. Mohod," Performance of Steel Fiber Reinforced Concrete",
International Journal of Engineering and Science, Vol. 1, Pp. 1-4, 2012.
Ali Amin and Stephen J. Foster, "Shear strength of steel fibre
reinforced concrete beams with stirrups", Engineering Structures, Vol.
111, Pp. 323–332, 2016.
http://www.springer.com/series/13593/HarwinderSingh
https://www.hindawi.com/journals/ace/2018/9025715/