Done by Earth group from Mohammad Bin Abdulaziz Al-Mana school under supervision from Al-Bairaq

1. AL-Bairaq
I am Discovering Materials
Concrete
Group Name: Mana_Earth 10
Name: Ibrahim Ali Name: Hamad
Mohamad
Bader Ahmad:NameName: Mohamad Same

2. Outline
• Introduction
• Activity 1: Hunting for Objects Made of
Concrete
• Activity 2: Comparing Different Kinds of
Cement
• Activity 3: Part A: Comparing Different
Concrete Formulations
• Activity 4: Testing Properties of Concrete
• Activity 5: Reinforcing Concrete
• Product Idea: Reinforcing Concrete with

3. Introduction
Concrete is a hard material composed of Portland
cement, water and fine aggregates “sand” and
coarse aggregates “gravels”
Concrete is know to have excellent quality which
are
Strong, Cheap, Formable and Durable

4. Activity 1: Hunting for Objects Made of
Concrete
Concrete properties: Strong, Durable, Formable
and Cheap
Buildings
Trains Tunnels
Statues

5. Activity 2: Comparing Different Kinds of
Cement
• Objectives
Observing how concrete will harden with
additives are uses like CaCl2 salt and sugar
• Procedure

6. Activity 2: Comparing Different Kinds of
Cement
• Results
• From observation, the sample that has salt has
harden the fastest which
• While sample B hardened the slowest
Sample
Cement
g
Water ml
Additives
Salt
CaCl2 g
Sugar g
A 200 100 0 0
B 200 100 0 6
C 200 100 1 0

7. • Conclusion
Salt acted like a catalyst, hence the
hardening reaction of cement was faster
Surge was anti-catalyst so the reaction was
slower

8. Activity 3: Comparing Different Concrete
Formulations
Part A:Observing How Aggregate partials
Pack
• Objectives
Determine which aggregates combination and
ratio gives the highest density
• Procedure

9. Activity 3: Comparing Different Concrete
Formulations
• Results
• Conclusion
50:50 sample has the highest density and hence it is the
strongest
Type of
sample
Mass g Volume
cm3
Density
g/cm3
Coarse
aggregate
only
100 62 1.61
Fine
aggregate
only
100 56 1.7
Mixed
aggregate
50:50
100 46 2.1

10. Conclusion
• The coarse aggregates to total aggregates
ration of 0.5 has the highest density

11. Activity 3 Part B: Comparing Different
Concrete Formulations
• Objective
Prepare sample of concrete with different water to
cement ratios and to be tested for their strength
• Procedure

12. Activity 3 Part B: Comparing Different
Concrete Formulations
• Samples prepared
Formulatio
n
Cement g Sand
g
Gravel g Water ml Ratio of
water to
cement
E 60 120 120 30 0.5
A 200 0 0 90 0.65

13. Activity 5: Reinforcing Concrete
Sample Cement Sand Gravels Water Water
to
Cement
Ratio
E+ 60 120 120 30 0.5
Objectives
Make a sample similar to sample E but with the
addition of reinforcement

14. Activity 4: Testing Properties of
Concrete

15. Activity 4: Testing Properties of
Concrete
• Results
• Conclusion
The testing of the sample E+ shows it is the best
between samples.
Sample Amount of water
needed to break the
Kg sample
E 3.4
E+ 10
A 6

16. Quantities used to prepare the
samples
Cement
g
Sand g Gravels
g
Water
ml
Synthet
ic wool
g
Weight
Kg
Sample
A
117 120 60 66 3 25.9
Sample
B
118 120 60 66 22 36
Sample
C
120 120 60 66 0 14

17. Project : Reinforcing Concrete
with Waste Synthetic Wool
Hypothesis
New idea of adding the waste of synthetic
wool to concrete mix to make it stronger
Purpose of the project
Synthetic wool is found in bellows and bed
mattresses filling

18. Procedure and testing

19. Amounts used to prepare the samples
and testing results
Sampl
e
Cement
g
Sand
g
Gravels
g
Wate
r ml
Syntheti
c Wool g
Weight
Kg
A 80 120 60 66 40 25.9
B 100 120 60 66 20 36
C 120 120 60 66 0 14

20. Benefits of the porject
1. Synthetic wool is not usually recycled
2. It works as a binder of concrete components that resists the tension
force and tearing
3. When its used are reinforcement concrete become stronger
4. Clear improvement to concrete strength is observed after testing

21. Recommendations
• We recommend that is project idea is used and
applied starting in Qatar
• Special containers for wastes bellows and
mattress can be located in designated areas
• Hence, the amount of cement used in building
will be reduced so its good for the economy

22. Acknowledgment
Many thanks to my teachers, school and AL-Bairaq team
from Center for Advanced Materials (CAM), Qatar
University for supporting us during our journey with a AL-
Bairaq.
Also, I would like to thank the sponsors UNESCO, Qatar
National Commission, Ras Gas, Maersk and Shell.