2. Mohd. Mohsin Khan, Anurag Sharma and Sandeep Panchal
http://www.iaeme.com/IJCIET/index.asp 149 editor@iaeme.com
are used in concrete (Zheng et al; 2008). The result showed a big difference in properties of both the
rubberized concretes. Compressive strength and modulus of elasticity of ground rubber based concrete
was higher than the crushed rubber based concrete. Strength, workability and unit weight of
rubberized concrete is reduced significantly (Khallo et al; 2008).
According to the various studies undertaken on this research topic, it’s a fact that if excess amount
of rubber is mixed the strength will reduce which is not desirable. So, the proportion of crumb rubber
to be mixed in this study is restricted upto 15%.
2. MATERIALS AND METHOD
Rubberized concrete consists of rubber chips as course aggregate or small rubber particles as fine
aggregate. The flexibility of the rubberized concrete is higher than the ordinary concrete. Because of
the rubber which is mixed in the concrete it is called as rubberized Concrete. The amount of rubber
should be very low in the rubberized concrete, because rubber has less strength and density than
aggregate. The concrete mixes are prepared varying amount of rubber from 5-15%.
Figure 1 Rubberized Concrete
Sand used for the experimental program was locally available material and conformed to Indian
standard specifications IS 383-1970. Fine aggregate use was river sand. Specific gravity of fine
aggregates is found 2.6 and water absorption is found to be 1.5%. The coarse aggregates are crushed
with a maximum size of 20mm. The specific gravity of coarse aggregate is 2.67. Water absorption of
coarse aggregate is 0.5%.
All mix proportions are designed with a slump ranging from 25-30 mm keeping the water content
constant at 190 kg/meter cube. The water cement ratio of 0.47 is kept constant for all mixes. Fine
aggregate was replaced by crumb rubber varying from 5% to 15% by weight. Slump test and
compression tests are performed on the various samples prepared. The cubes prepared are shown in
Figure 2 and Figure 3.
Figure 2 M20 Concrete with 10% rubber as Figure 3 M20 Concrete with 10% rubber as
replacement of fine aggregate replacement of coarse aggregate
3. Use of Crumb Rubber as Replacement over Aggregate in Concrete
http://www.iaeme.com/IJCIET/index.asp 150 editor@iaeme.com
3. RESULTS AND DISCUSSION
The strength of concrete cubes is measured for 7 and 28 days. The compression strength of various
samples is represented by a graph in which x-axis shows the variation of amount of rubber and at y-
axis shows the compression strength. Figure 4 shows the variation of compression strength after 7
days when crumb rubber is used to replace the coarse aggregates.
Figure 4 7 day Compression strength Vs % crumb rubber as replacement of coarse aggregate
It’s shown from Figure 4 that the strength is reducing as the amount of crumb rubber is increased
as replacement of coarse aggregates. Even the 28 days strength of concrete also reduces significantly
as the amount of rubber is increased.
Figure 5 7 days strength (crumb rubber replaced by fine aggregates)
132.22
91.11
80
71.11
0
20
40
60
80
100
120
140
0% 2% 4% 6% 8% 10% 12% 14% 16%
Compressivestrenth(kg/cm2)
Percentage of crumb rubber as replacement C.A
by volume
133.33
153.33
148.33
140.33
130
135
140
145
150
155
0% 2% 4% 6% 8% 10% 12% 14% 16%
Compressivestrength(kg/cm2)
Percentage of crumb rubber as replacement F.A by
volume
4. Mohd. Mohsin Khan, Anurag Sharma and Sandeep Panchal
http://www.iaeme.com/IJCIET/index.asp 151 editor@iaeme.com
Figure 6 28 days strength (crumb rubber replaced by fine aggregates)
Figure 5 shows the variation of 7 days compression strength when fine aggregates are replaced by
crumb rubber. Figure 6 shows the strength at 28 days. In case of replacement of fine aggregates with
rubber the strength increases initially and after that it decreases as the amount of rubber increased in
the concrete. The best results are obtained when fine aggregates are replaced by 5% of crumb rubber.
4. CONCLUSION
It can be concluded from this study that fine aggregates can be replaced by crumb rubber upto some
extent. The higher amount of crumb rubber reduces the strength of concrete which may not be
desirable, but, the rubber based concrete has good toughness and deformability. So this kind of
concrete may be used in the structures (road foundations and bridge barriers) where toughness and
deformability is more important than strength. This kind of concrete may also use to decrease the
vibrations coming on the base of the structures because rubber based concrete have reversible
elasticity property.
REFERENCES
[1] Siringi, Gideon M., Abolmaali, Ali Aswath, Pranesh B. (2013) “Properties of Concrete with
Crumb Rubber Replacement Fine Aggregates” ASTM (American Society for Testing and
materials) International, 2(1) P 5-20.
[2] Reddy, K.S., Patil, S.k., Panday, B.B (2004) “Laboratory Evaluation of crumb Rubber Modified
Asphalt Mixes” ASCE (American society of Civil Engineering), 5(2), P 7-12.
[3] M.M Al-Tayeb& B.H. Abu Baker& H.M. Akil& H “Effect of partial replacement of sand by fine
crumb rubber on impact load behavior of concrete beam: experiment and nonlinear dynamic
analysis” Journal of material and structures.
[4] Ahmed N. Bdour and Yahia A. Al-Khalayleh “Innovative Application of scrape-tire Steel Cord in
Concrete Mixes” Jordan Journal of Civil Engineering, 2010.
[5] Ashraf Fadiel, Fouag Al Rifaie, Taher Abu- Lebdehan EllieFini “Use crumb rubber to improve
thermal efficiency of cement-based materials” American journal of Engineering and Applied
Sciences, 2004
[6] M. Venu & P. N. Rao Birla, Study of Rubber Aggregates in Concrete: An Experimental
Investigation, International Journal of Civil Engineering and Technology, 1(1), 2010, pp. 15–26
206.66
259.99
220.66
198.88
0
50
100
150
200
250
300
0% 2% 4% 6% 8% 10% 12% 14% 16%
Compressivestrength(kg/cm2)
Percentage of crumb rubber as replacement F.A by
volume
5. Use of Crumb Rubber as Replacement over Aggregate in Concrete
http://www.iaeme.com/IJCIET/index.asp 152 editor@iaeme.com
[7] Sandeep Panchal, Md. Mohsin Khan and Anurag Sharma,’Stabilization of Soil Using Bio-Enzyme ‘
International Journal of Civil Engineering and Technology, 8(1), 2017, pp. 234–237.
[8] Md. Mohsin Khan, Sandeep Panchal, Anurag Sharma and Anupam Anand Bharti, Innovative Use
of Brick Powder and Marble Dust as a Mineral Admixture in Concrete. International Journal of
Civil Engineering and Technology, 8(1), 2017, pp. 987–990.
[9] R. Gopa Kumar and Dr R. Rajesh. A Study on the Abrasion resistance, Compressive strength and
Hardness of Banana – Fibre Reinforced Natural Rubber Composites. International Journal of
Advanced Research in Engineering and Technology, 7(3), 2016, pp 42–55
