Al-BairaqI am Discovering Materials
Concrete ModuleGroup: King of Sand
1-Abdulrahman almulla 2-Abdulla almazrouei 3-Khalid almulla 4-Hussain nazar
Outlines: Introducti
on Activities Project Design Conclusion
Activities
Activity 1:
Hunting for objects made of concrete
.By identifying concrete objects in their surroundings, students recognize the widespread use of concrete as an infrastructure material. From their observations, students deduce reasons why concrete is the most common infrastructure material used today.
Activity 1:
Activity 2:
Comparing different pastes of cement
.Students observe changes that occur as cement hardens and conclude that the cement-hardening process involves chemical and physical changes. Students also explore the effects of additives on cement.
Activity 2:
Sample Portland
Cement
Water Additives
Salt ( CaCl2
)
Table sugar
A 200 g 100 ml 0 0
B 200 g 100 ml 0 2 g
C 200 g 100 ml 12 g 0
Compare between 3 kinds of cement :
Timemin
Temp A
Temp B
+sugar
Temp C
+salt
3 21.4 22.5 28.5
6 21.4 22.6 30.2
9 21.4 22.6 31.5
12 21.4 22.7 32.6
15 21.5 22.7 32.6
18 21.5 22.8 32.7
21 21.6 22.5 32.4
24 22.3 22.3 32.1
27 22.7 22.3 31.4
30 23.1 21.7 30.8
Measure the temperature of each of the samples :
Activity 3:
Comparing Different Concrete Formulations
.Students make concrete samples using different formulations. They discover that the density of concrete can be changed by changing the proportions of its components-coarse aggregate, fine aggregate, cement, and water.
Activity 3:
MASS
VOLUME
DENSITY
SAND 100 g 60 ml 1.6 g/ml
GRAVEL
100 g 72 ml 1.38 g/ml
MIX 100 g 56 ml 1.78 g/ml
Part A
Part B COARSE
AGGREGATS
FINE AGGREGAT
S
CEMENT WATER
A 0 0 200 90
B 0 240 60 33
C 0 240 60 45
D 120 120 60 27
E 120 120 60 33
E* 120 120 60 30
F 120 120 60 39
G 120 120 60 45
H 240 0 60 33
I 240 0 60 45
Activity 4:
Testing Properties of Concrete
.Using the samples they made in the previous Activity, students observe how the proportions of the components of concrete affect its strength and brittleness.
Activity 4:
PROJECTDESIGNING SAFE PARTITIONING IN
THE WAY HIGH
Introduction and Rationale : We chose this idea because we expected that applying it the highway will be more safe.
1-Learning general laboratory techniques.2-How concrete is made.3-How to control the concrete shape and properties
CONCLUSIONS
We want to thank the professors and sponsors for giving us the opportunity to participate in
AL-Bairaq project.
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