Concrete, highway partitioning, IDM7

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.