Done by Inventors group at Zobaida Independent Secondary School for Girls, Under supervision from AL-Bairaq

2. Hunting for objects made
of concrete Comparing the hardening of different
kinds of cement by adding salt and
sugar .
Comparing densities of mixed
aggregate at samples Testing properties of concrete
(breaking concrete )

5.  a very hard ​building material made
by ​mixing together ​
cement Fine aggregates Coarse aggregates water

6.  Flexible
 Durable
 Cheap
 strong

7. Hunting for objects made of concrete.

8. Houses
roads
Skyscrapers
Mosques

11. Time A B C
0 25 21 22
3 24 23 22
6 24 23.5 22
9 24 23 22
12 24 22.5 22
15 24 22 22

12. sample temperature Harding Conclusion
A Slightly increased
then decreased
Quickly Reacted with cement
B Slightly decreased
then increased very
quickly
The fastest Salt act as a positive
catalyst
C Decreased then
Coasted
Very slow Sugar act as a
negative catalyst

13. The results :
1- when we added sugar the hardening rate was decreased
2- when we added salt the hardening rate was increased

15. Assigned
formulation
Coarse
aggregates
Fine aggregates Portland cement water
E 120 120 60 33
E . R 120 120 60 33
H 240 120 60 33

19. Product idea
Use nano-materials for the
self – healing of cracking

21. RESULTwe expect that our
product will prevent and cure
concrete hair cracks by using
bacteria that would grow up until it
completely fills the crack .

22. Conclusion The self-healing bio concrete aims to provide
a cheap and sustainable solution , markedly improving the
lifespan of buildings , bridges and roads .
We recommended to use this product to protect steel
reinforcement from corrosion which increase the life time of
structure