Done by Scientists group from Mohammad Bin Albdulaziz Al-Mana school. Under supervision of Al-Bairaq

1. Mana _scientists1 10
Hazzaa Al-khireen Mohammed Al-Hashmi
Abdulaziz Mashan

2. Outlines
• Introduction
• Activity 1: Hunting for Object made of concrete
• Activity 2: Comparing Different Cement
Formulations
• Activity 3: Comparing Different concrete
formulations
• Activity 4: Testing Properties of Concrete
• Activity 5: Reinforcing Concrete
• Product Idea

3. Introduction
A heavy, rough building material made from a mixture
of broken stone or gravel, sand, cement, and water, that
can be spread or poured into molds and that forms a
stone like mass on hardening

4. Activity 1: Hunting for Objects
Made of Concrete
Photos of things made of concrete
TowersRoads Houses

5. Activity 2: Comparing Different Kinds of
Cement
 Objectives
See the change on cement hardening when salt
and sugar are added to samples
 Procedure

6. Activity 2: Comparing Different Kinds of
Cement
 Results
 Sample B took long time to react since sugar was
added
 Sample C reacted faster than the other samples

7.  Conclusions
 A catalyst fasten the chemical reaction without being
part of the reaction
 Salt is the catalyst
 Surge was negative catalyst that make the reaction
slower

8. Activity 3: Comparing Different Concrete
Formulations
Part A: Observing How Aggregate partials Pack
 Objectives
Determine the best concrete formulation according
to density
 Procedure

9. Activity 3: Comparing Different Concrete
Formulations
 Results
 Conclusion
The sample with the highest density is sample C,
Ratio of coarse aggregates to total aggregates is 0.5
Type of sample Mass g Volume cm3 Density g/cm3
Sample A: Coarse
aggregate only
100 63 1.58
Sample B: Fine
aggregate only
100 60 1.66
Sample C: Mixed
aggregate
50:50
100 56 1.78

10. Conclusion
 50:50 ratio of sand and gravels mix has the highest
density
 The higher the density the stronger the concrete

11. Activity 3: Comparing Different Concrete Formulations
Part B Making Concrete Samples
Objectives:
Preparing three samples of cement to be tested for the
strongest sample
Prepare a sample with reinforcement to increase the strength
and reduce the brittleness
Procedure:

12. Assigned
formulation
Coarse
Aggregat
e
(g)
Fine
Aggregate
(g)
Portlan
d
Cement
(g)
Water
(ml)
E 120 120 60 33
F 120 120 60 39
E+ 120 120 60 33
Data
We added paper and cotton to sample E+ as
reinforcement

13. Water to Cement Ration
 Samples with 0.5 water to cement ration are supposed to be
the strongest because if;
 1- water was more it will evaporate and leave voids in the
samples
 2- if water was less some cement is left unreacted
Formulation Ratio of water to
cement
E 0.55
E+ 0.55
f 0.65

14. Activity 4: Testing Properties of
Concrete
Objectives;
 Testing the previous samples using the testing tool
Procedure

15. Activity 4: Testing Properties of Concrete
Results
Sample Amount of water needed
to break the sample
kg
E 7.5
E+ 14
F 4.2
Sample E+ is the strongest sample since it reinforced with wood, cotton and metal
wire

16. Project: Application and Testing of
Waste Glass Addition to Concrete Mix
 Glass waste is very common and found in very huge
amounts
 In Qatar there is no glass recycling plant for glass
waste
 Landfill are full of plastic and glass waste

17. Amounts used to prepare the
samples
Sample Cement
g
Sand g Gravels g Water
ml
Glass
Powder
Water
weight
Kg
A 80 120 60 66 3 22
B 100 120 60 66 2 42.8
C 120 120 60 66 0 14

18. Testing of the samples

19. Results of Testing
The graph below shows the results of testing
0
5
10
15
20
25
30
35
40
45
Sample A Sample B Sample C
Water Weight Kg
Water Weight
Kg

20. Conclusions
This product shows great addition to concrete strength
which is a very novel and useful management of waste.
The environment benefits are very great.

21. 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.