Page 1 of 7
European Journal of Business &
Social Sciences
Available at https://ejbss.org/
ISSN: 2235-767X
Volume 07 Issue 05
May 2019
Available online: https://ejbss.org/ P a g e | 958
Experimental Study on High Strength Concrete by
Using Recron35 Fiber
BASKAR .V, PG Student
Dept. of Civil Engineering
PRIST University
Thanjavur-403, India
baskarvbe96@gmail.com
Abstract — Concrete is the most widely used construction
material all over the world in view of its strength, high mould
ability, structural stability and economic considerations. High
performance concrete (HPC) is a concrete that meets special
combinations of performance and uniformity requirements
which cannot always be achieved routinely using conventional
constituents and normal mixing and placing and curing practices.
To produce high performance concrete it is generally essential
to use chemical and mineral admixtures in addition to the same
ingredients, which are generally used for normal concrete. In
recent times, many researches are going on for improving the
properties of concrete with respect to strength, durability, and
performance as a structural material. There are many materials
like fly ash, furnace slag, foundry sand and silica fume,
metakaolin, stone dust, manufactured sand etc.
Some of the Salient features of HPC are it has wide range of
grain sizes so that the cement grains flocculation reduced. The
densified cement paste endogenous the shrinkage. The presence
of low free lime content enhances the strength of the transition
zone at the interface between cement paste and aggregate. The
discontinuous spores make the less capillary porosity and the no
bleeding homogeneous mix which leads smooth fracture surface
Index Terms— High performance concrete (HPC),
Admixtures,Recron35 Fiber
I. INTRODUCTION
Concrete undergoes severe deterioration cycles during
its service life starting from different weathering cycles and
uncertain fire hazards. The design of concrete need to consider
different sustainability conditions to withstand severe
durability cycles due to high performance requirement.
However, the high temperature performance of plain concrete
is affected due to break down of calcium hydroxide crystals
and results in spalling of cover concrete. Polymer based
concrete systems are typically used for high performance
applications and this necessitates the importance to study its
high temperature performance.
Concrete system incorporating polymers provide
adequate improvement on the compressive strength properties.
However, the strength reduction at different temperature cycles
has a significant influence when exposed during fire hazards.
Many studies have been conducted in plain concrete to
evaluate its high temperature performances, whereas the
incorporation of fibres in high temperature especially, The
Recron35 fibre reinforced concrete (PFRC) contains randomly
distributed short discrete Recron 35 fibres which act as internal
reinforcement so as to enhance the properties of cementations
composite (concrete). The principle reason for incorporating
the Recron 35 fibres into a cement mix is to reduce cracking
into elastic range, and to increase the tensile strength and
deformation capacity and increase the flexural strength of the
resultant concrete; these properties of PFRC primarily depend
upon the length and volume of Recron 35 fibres used in the
concrete mixture.
The applications are primarily to inhibit the cracking.
However due to the lack of awareness, design guidelines and
construction specifications, its uses are limited by the local
construction industry. Therefore there is need to develop
information on the properties of Recron 35 fibre reinforced
concrete in which indigineous Recron 35 fibres are used in the
concrete mixture.
In this project Recron 35 fibre of length 12mm is used
with 0.15% volume fraction of concrete mix is used. The
comparison of the compressive strength with the conventional
concrete is done with various tests and the results is judged to
be good
It Significantly Increases flexural strength and
Compressive Strength up to certain Elevated temperature.
II. METHODOLOGY
The selection of ingredients, used in HPC,
• Cement
• Fine Aggregate
• Coarse Aggregate
• Water
• Recron 35 Fiber
1) Cement
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European Journal of Business &
Social Sciences
Available at https://ejbss.org/
ISSN: 2235-767X
Volume 07 Issue 05
May 2019
Available online: https://ejbss.org/ P a g e | 959
Cement is grade 53 conforming IS 260-1976, Factors like
heat of hydration, initial setting time, final setting time etc. was
considered in selecting the type of cement.
2) Fine Aggregate
Fine Aggregate (sand) is properly graded to give minimum
void ratio . river sand less than 4.75mm, conforming to zone of
IS: 383. Sand is washed to remove deleterious materials and
tested as per IS: 2386.
3) Coarse Aggregate
For making concrete maximum size of aggregate is 20 mm
because bigger size particles cause concentration of stresses
around particles die to the difference the elastic modulus of the
paste and aggregate hence lower strength of concrete
4) Water
Potable water conforming to requirements of IS:456 are
used for making of concrete
5) Recron 35 Fiber
It Prevents the spalling of concrete i.e. the concrete
brittleness when exposed to high temperature. Minimizing
thermal cracking and it also controls Corrosion
III. LITERATURE REVIEW
Rahul Subhash Patil did work on the Effect of Elevated
Temperature and Type of cooling on M20 grade Concrete
using Fibres. The present work is aimed to study the effect of
elevated temperature ranging from 200oC to 600oC on the
compressive strength on M20 grade concrete with percentage
of Recron 3s fiber (0.22%) & steel fiber (0.5%) by volume of
concrete.
Tests were conducted on 150mm side cube concrete
specimens. The specimens were heated to different
temperatures of 200̊C, 400̊C, and 600̊C for 6 hour durations.
After the heat treatment the specimens were cooled by wet and
dry cooling condition and then they were tested for
compressive. The results were analyzed and presented with
comparison of compressive strength of specimens with &
without fibers for different cooling conditions.
Page 3 of 7
European Journal of Business &
Social Sciences
Available at https://ejbss.org/
ISSN: 2235-767X
Volume 07 Issue 05
May 2019
Available online: https://ejbss.org/ P a g e | 960
The concrete containing fiber exhibited better performance
than without fiber for high temperature. Strength loss was more
significant on specimens cooled in water. As fibers bridge the
cracks and control crack width, hence increase load carrying
capacity and strength. Also fibers, improve resistance to
spalling of concrete at high temperature.
Sengottaiyan Thirumurugana and Sivakumar Anandan did
work on Residual Strength Characteristics of Polymer Fibre
Concrete Exposed To Elevated Temperature Mechanical
properties of polymer based concrete exposed to high
temperature effects are evaluated Concrete mixtures were
prepared using styrene butadiene rubber (SBR) latex and
reinforced with Recron 3s (PP) fibres Concrete specimens after
required curing were subjected to different high temperature
effects from 200°C to 800°C and the corresponding weight loss
and residual strength was determined.
Experimental observations showed that, compared to plain
concrete the residual strength characteristics of polymer fibre
concretes were affected when exposed to high temperature.
Strength degradation occurred with increase in temperature and
the test results indicated that the temperature sustainability of
Recron 3s fibre concretes were observed up to 200°C. A
maximum compressive strength loss upto 56.75% for plain
concrete and 9.87% for polymer fibre concrete was noticed
when exposed to high temperature upto 800°C. Further,
microscopic analysis of fibre concretes exposed to high
temperature showed possible melting of PP fibres resulting in
filling the pore spaces which possibly improved the matrix
hardening. Also, the high volume fibre incorporated concrete
mixes showed maximum residual strength gain due to
favourable matrix strengthening and demonstrated high
temperature performance of polymer concretes.
Ahsana Fathima K M & Shibi Varghese did experimental
study on investigating the effects of steel fibres and Recron 3s
fibres and the mechanical properties of concrete This paper
presents the results of an experimental study investigating the
effects of steel fibres and Recron 3s fibres on the mechanical
properties of concrete. Experimental program consisted of
compressive strength test, split tensile strength test and flexural
strength tests on steel fibre reinforced concrete and Recron 3s
fibre reinforced concrete.
Three types of fibres used are hooked end steel fibre of
length 30mm, crimped steel fibre of length 25mm and enduro- 600 Recron 3s of length 50mm with aspect ratio 50. The main
aim of this experiment is to study the strength properties of
steel fibre and Recron 3s fibre reinforced concrete of M30
grade with 0%, 0.25%, 0.5%, and 0.75% by volume of
concrete. This study consisted of compressive strength test and
split tensile strength test on hybrid fibre reinforced concrete
with 0.5% Recron 3s fibres and 0.75% steel fibres.
Mehul J. Patel and S. M. Kulkarni Effect of Recron 3s
Fibre on High Strength Concrete .The paper deals with the
effects of addition of various proportions of Recron 3s fibres
on the properties of High strength concrete. An experimental
program was carried out to explore its effects on compressive,
tensile, flexural, shear strength and plastic shrinkage cracking.
A notable increase in flexural, tensile and shear strength was
found. The main aim of the investigation program is first to
prepare the strength of concrete of grade M40 with locally
available ingredient and then to study the effect of different
proportion of Recron 3s fibre in the mix and to find optimum
range of Recron 3s fibre content is 0.5%,1.0%,1.5% in the mix.
The concrete specimens were tested at different age level for
mechanical properties of concrete, namely, cube compressive
strength, split tensile strength, flexural strength and other test
were conducted for cement, chemical admixture, coarse
aggregate & fine aggregate.
K.Kulkarni and B.Prakash Strength Properties of Fibre
reinforced concrete by Adding Admixtures. The Recron 3s
Fibre reinforced concrete achieves higher compressive, tensile
flexural and impact strength with the combination of
admixtures. The Percentage increase in the compressive
strength for fibre reinforcement concrete with the combination
of admixture is 19.05% , 14.89% , 12.85% and respectively for
0%, 0.1%, 0.2% and 0.3% addition of Recron 3s fibres as
compared to the reference mix. The percentage increase in the
tensile strength for reinforced concrete with the combination of
admixture is 46.87% , 40.99% , 37.43% and 39.39%
respectively for 0% ,0.1%,0.2 and 0.3% addition of Recron 3s
fibre compared to the compared to the reference mix.The
specific gravity of fine aggregate were found to be 2.66 and
2.85 respectively. The young modulus of Recron 35 fibre was
found to be 5x103 MPa.
Alhozaimy, P.Soroushian & F.Mirza did Behavioural Study
of Recron 35 Fibre Reinforced Concrete and its Mechanical
properties. A comprehensive set of experinmental data were
generated regarding the effects of collated fibrillated Recron 3s
fibres at relatively low volume fraction on the compressive,
flexural and impact properties of concrete material with
different binder composition. Statistical analysis of results
produced reliable conclusions on the mechanical properties
fibre reinforced concrete and also pozzolanic admixtures in
deciding these properties. Recron 35 fibre were observed to
have no statistically significant effects on compressive or
flexural strength of concrete.
The flexural and toughness and impact resistance showed
an increase in the presence of the Recron 35 fibres. Positive
interaction were also detected between fibres and pozzlonas.
Recron 35 fibre are not expected to increase the strength of
concrete but to improve its ductility and toughness and impact
resistance. The effects of collated fibrillated Recron 35 fibre at
volume fraction ranging from 0.05% to 0.3% on the
compressive and flexural strength and toughness and impact
resistance of conventional concrete material. Recron 35 fibre
