This document summarizes a student project studying the mechanical properties of concrete with crumb rubber as a replacement for fine aggregates. The project is conducted by 5 students and examines the effect of adding crumb rubber on the workability, strength, water absorption, and thermal insulation of concrete. Testing is done on concrete mixtures with varying percentages of crumb rubber replacement. The results show that compressive strength, slump, and density decrease with higher crumb rubber content, while water absorption decreases and thermal insulation initially increases then decreases. Future work could examine additional properties and use different forms of waste tire materials.

1. FINAL YEAR MINOR PROJECT
Mechanical Properties of Concrete Using Crumb
Rubber in Replacement of Fine Aggregates

2. Presented by :
 Members:
 Sunil Dogra(13UCE130)
 Suresh Thakur(13UCE063)
 Nikhil Attri(13UCE139)
 Kapil Rana (13UCE129)
 Dhani Ram (13LCE003)

3. INTRODUCTION
Rubber is a naturally occurring polymer, and a
very good one, when added to concrete it will
increase its elasticity, decrease its brittle point
and increase its softening point .
In General , the purpose of addition of the
rubberized materials to concrete is to improve
its properties and to study its effect on
workability.

4. OBJECTIVES
The objective of this study is to show the effect
of adding rubber to concrete to improve the
properties of concrete . and the effect of
adding rubber as an admixture on the
workability , strength of concrete, water
absorption and thermal insulation.
The benefits of the addition of rubber too , to
minimize the risk of pollution, and to study the
deformation properties of Portland cement
concrete with rubber waste additive.

5. Literature review
 SALEEM SHTAYEH studied the Utilization
of waste tires in the Production of non –
structural Portland cement concrete .The
study showed that the compressive
strength decreases as percent of crumb
waste tires increases .

6. MATERIAL USED
The materials used in this
research work are :
 1- Normal Portland cement .
 2- Natural Coarse aggregate .
 3- Natural Fine aggregate
 4- Water ( fresh drinkable
water ) .
 5- Rubberized materials
(crumb rubber ) .

7. Activities Done
 Do Literature Survey related to the Project.
 VariousTests are done on the material used
 M2o concrete mix are used to make the
samples
 Cubes, cylinders and beam samples are casted
for calculating Compressive Strength, tensile
strength and flexural strength of Concrete with
Cement andWaste Material.
 Comparison done between the Compressive
Strength calculated by Cement and Waste
Material.

8. ACTIVITIES DONE
*MIXING OF CONCRETE

9. PREPARING OF MOULDS
VIBRATOR USED FOR
COMPACTION

10. CONCRETE SAMPLES

11. CURING OF SAMPLE

12. COMPRESSIVE STRENGTH TESTING

13. TENSILE STRENGTH TESTING

14. Flexural strength testing

15. Conclusion
 1. Compressive strength decreases as the percent of waste crumb tire
replacement increases.
 2. Slump test results decreases as the percent of waste crumb tire
replacement increases.
 3. Density decreases as the percent of waste crumb tire
replacement increases.
 4.Thermal insulation increases at 50% replacement and then starts
to decreases as waste crumb tires increases.
 5.Water absorption decreases as the percent of waste crumb tire
replacement increases.

16.  The durability tests like corrosive resistance,
sulphate attack tests can be taken up. Mortar
properties of all the mix can be studied. Study
can be made to determine strength parameters
of cement with crumb rubber as fine aggregate
and mineral admixture like fly ash and Ground-
granulated blast-furnace slag ( GGBS ).
 In future research following points can be taken-
 a)Tyre Powder can be used as fine aggregate.
 b)Tyre chips can be replaced by same size of
coarse aggregate.
FUTURE SCOPE

17. THANKYOU