Ae34190192

M.S. Pawar, A. C. Saoji / International Journal of Engineering Research and Applications
(IJERA) ISSN: 2248-9622 www.ijera.com
Vol. 3, Issue 4, Jul-Aug 2013, pp.190-192
190 | P a g e
Performance Of Self Compacting Concrete By Using Alccofine
M.S. Pawar1
, A. C. Saoji2
1 -Post Graduate Student ( Structural Engineering), Babasaheb Naik College of Engineering
2-Associate Professor, Civil Engineering Department, Babasaheb Naik College of Engineering,
Sant Gadge Baba Amravati University, Amravati ,Maharashtra
ABSTARCT :
In Japan, in early eighties, premature
deterioration of concrete structures were
detected almost everywhere in the country. The
main cause of the deterioration was recognized as
inadequate compaction. In addition, the gradual
reduction in the number of skilled workers in
Japan`s construction industry led to a reduction
in the quality of construction work. As a solution
for these social and technical requirements, the
concrete of SCC was proposed by Prof. Okamura
at Tokyo University in 1988.
The use of Self Compacting Concrete (SCC)
bypasses the need for external vibration,
eliminating the problem of unskilled labour. Self
Compacting Concrete shortens the construction,
period, eliminates noise due to vibration and
provides high stability during transport and
placement. There is a reduction in cracking and
micro structural defects.
The study explores the use of the Alccofine
powder to increase the amount of the fines and
hence achieve self – compatibility. The study
focuses on comparison of the properties of SCC
containing Alccofine with that standard one. The
main variable is proportion of Alccofine keeping
cement, flyash, water, coarse aggregate, fine
aggregate and super plasticizer contents
constant.
Keywords :- Self Compacting Concrete, Alccofine,
Compatibility, Strength.
I. INTRODUCTION
Cement-based materials are among the
most important construction materials, and it is
most likely that they will continue to have the same
importance in the future. However, these
construction and engineering materials must meet
new and higher demands. When facing issues of
productivity, economy, quality and environment,
they have to compete with other construction
materials such as plastic, steel and wood. One
direction in this evolution is towards self-
compacting concrete (SCC), a modified product
that, without additional compaction energy, flows
and consolidates under the influence of its own
weight. The use of SCC offers a more industrialised
production. Not only will it reduce the unhealthy
tasks for workers, it can also reduces the technical
costs of in situ cast concrete constructions, due to
improved casting cycle, quality, durability, surface
finish and reliability of concrete structures and
eliminating some of the potential for human error.
However, SCC is a sensitive mix, strongly
dependent on the composition and the
characteristics of its constituents. It has to possess
the incompatible properties of high flow ability
together with high segregation resistance. This
balance is made possible by the dispersing effect of
high-range water-reducing admixture
(superplasticizer) combined with cohesiveness
produced by a high concentration of fine particles in
additional filler material.
To produce SCC, the major work involves designing
an appropriate mix proportion and evaluating the
properties of the concrete thus obtained. In practice,
SCC in its fresh state shows high fluidity, self-
compacting ability and segregation resistance, all of
which contribute to reducing the risk of honey
combing of concrete (Su et al., 2001).With these
good properties, the SCC produced can greatly
improve the reliability and durability of the
reinforced concrete structures. In addition, SCC
shows good performance in compression and can
fulfil other construction needs because its
production has taken into consideration the
requirements in the structural design.
II. MATERIALS
CEMENT: - OPC
Cement in general can be defined
as a material, which possesses very good adhesive
and cohesive properties that make it possible to
bond with other materials to form a compact mass.
Thus cement is a material which possesses
cementations properties. The cement used by
engineers solidifies when mixed with water.
Properties:
Fineness = 8%
Normal consistency = 29.5%
Soundness = 2 mm
Setting time Initial = 53 min.
Final = 493min
.
Specific gravity = 3.15
AGGREGATE:-
The sieve analysis of fine and coarse
aggregate was performed. The physical properties of
fine and coarse aggregate are summarized below.

191 | P a g e
Properties of Aggregate
Fly Ash:-Physical Properties of Fly ash
Sr.
no.
Physical
properties
Test value
Specification
limit as per
3812-1981
1 Specific gravity 2.55
2 Specific surface
(cm2
gm)
3850 3200
3 Limit reactivity (
Kg/ cm2
)
52.5 40
4 Fineness by sieving
% passing 300 
% passing 150
% passing 75 
% passing 53 
97.5
93.0
84.5
80.1
Chemical properties
Particle Size <0.1m – 100 
Specific gravity: 2.15
Chemical Properties of Fly ash
Sr.
No.
Chemical
Constituents
Percentage
1 Silica 62.12
2 Iron oxide 6.48
3 Calcium oxide 1.23
4 Titanium oxide 1.80
5 Potassium oxide 128
6 Magnesium oxide 0.49
7 Phosphorous
Pentaoxide
0.40
8 Sulphur 0.36
9 Disodium oxide 0.28
Alccofine
For mixes other than control concrete,
Alccofine is used as admixture . The Chemical and
physical properties of Alccofine are as below.
Properties of Alccofine
Constituents
% by wt of sample
(Alccofine)
SiO2 33.6
S O3 0.19
Al2O3 22.6
Fe2O3 2.2
MnO 0.62
MgO 8.00
CaO 31.00
Na2O 0.42
Chloride Content 0.02
Sulphide Sulphur 1.1
Specific gravity 2.86
III. EXPERIMENTATION
For evaluation of performance of SCC
using Alccofine six different mixes are proposed.
These are subdivided into four groups:
1. Control concrete without Alccofine
2. Control concrete with 5% of Alccofine.
3. Control concrete with 10% of Alccofine
4. Control concrete with 15% of Alccofine
In order to study the effect on properties of SCC
with different percentage of Alccofine, SCC’s is
tested for
1. Fresh Properties
2. Harden properties
IV. RESULTS
Fresh properties of SCC with Alccofine
Mix
Name
Slump flow
values ( MM)
V Funnel values
in Sec
L- Box
H2/H1
Ratio
T 50 Dia (
M.M.)
Ti
(Sec)
T5(min)
S 5 4 700 8.8 11.5 0.84
S 10 3.9 710 8.5 11.2 0.88
S 15 4.1 690 9 11.6 0.82
Harden properties of SCC with Alccofine
Mix
Name
Avg. Compressive
Strength in (MPa) at
Flextural
Strength in
(MPa) at
7
days
14
days
28
days
7
days
28
days
S 0 14.4 16.6 20.2 2.23 3.1
S 5 17.66 23 27 2.27 3.12
S 10 28.66 30.83 34 2.28 3.20
S 15 25.33 28.5 32 2.24 3.05
Sr.
No.
Property Fine
Aggregate
Course
Aggregate
1 Specific Gravity 2.46 2.66
2 Fineness Modulus 3.1 7.69
3 Water Absorption 1.62% 0.60%
4 Surface Texture Smooth --
5 Particle Shape Rounded Angular
6 Crushing Value --- 17.40
7 Impact Value --- 12.50

192 | P a g e
V - CONCLUSIONS :
Various Properties such as self
Compatibility, Compressive strength of the SCC
with different percentage of Alccofine are evaluated
and compared with those of conventional SCC with
Flyash. .From the limited experimental
investigations, following conclusions can be drawn
1) Fresh and Harden properties of SCCs with
Alccofine are enhanced than that of SCC
without Alccofine.
2) Fresh Properties and harden Properties of
SCCs with 10% Alccofine are superior than
SCCs with 5% and 15% of Alccofine.
REFERENCES
[1] Hardik Upadhyay, Pankaj Shah, Elizabeth
George, Testing and Mix Design Method of
Self –Compacting Concrete ,National
Conference on Recent Trends in Engineering
& Technology, May 2011 p
[2] Iliana Rodriguez Viacava, Antonio Aguado
dea Cea, Gemma Rodriguez de Sensale, “Self
Compacting Concrete of medium concrete
characteristics Strength.” Construction and
Building Materials 30(2012) p.p. 776-782.
[3] Nan, Su; Kung –Chung, H; His – Wen, C; “A
simple mix design method for self
compacting concrete.” Cement and Concrete
Research 31(2001)p.p. 1799-1807
[4] Sahmaran, M; Yaman , O.I.; Tokyoy, M.
(2009), “ Transport and Mechanical Properties
of self consolidating concrete with high
volume of fly ash”, Cement and Concrete
Composites Vol : 31, pp – 99- 106.
[5] Siddique R, “Properties of Self compacting
concrete containing fly ash and silica
fume.” M.E. Thesis, Thapar University,
Patiala. . (2010)
V funnel time with varing Alccofine contents
8
8.2
8.4
8.6
8.8
9
9.2
9.4
9.6
Alccofine % 5 10 15
TimeinSec.
SCC
SCC with Alccofine
Comparision of Compressive Strength
0
5
10
15
20
25
30
35
40
Age in days 7 14 28
CompressiveStrength
S 0
S 5
S 10
S 15
Flextural Strength with varing Alccofine contents
2.2
2.21
2.22
2.23
2.24
2.25
2.26
2.27
2.28
2.29
Alccofine % 5 10 15
Flexuralstrengthat7days
SCC
SCC with Alccofine
L-Box value with varing Alccofine contents
0.76
0.78
0.8
0.82
0.84
0.86
0.88
0.9
Alccofine % 5 10 15
H2/H1Ratio
SCC
SCC with Alccofine
Flow values with varying percentage of Alccofine
660
670
680
690
700
710
720
1 2 3
Alccofine % 5 10 15
Flowvaluesinmm

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