Post on 21-Jan-2017
AL-BairaqI am Discovering Materials
Concrete
Mana _scientists1 10 Hazzaa Al-khireen Mohammed Al-Hashmi
Abdulaziz Mashan
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
IntroductionA 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
Activity 1: Hunting for Objects Made of ConcretePhotos of things made of concrete
Towers Roads Houses
Activity 2: Comparing Different Kinds of CementObjectives See the change on cement hardening when salt and sugar are added to samplesProcedure
Activity 2: Comparing Different Kinds of CementResults
Sample B took long time to react since sugar was added
Sample C reacted faster than the other samples
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
Activity 3: Comparing Different Concrete FormulationsPart A: Observing How Aggregate partials Pack
ObjectivesDetermine the best concrete formulation according to density Procedure
Activity 3: Comparing Different Concrete FormulationsResults
ConclusionThe 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
Conclusion 50:50 ratio of sand and gravels mix has the
highest densityThe higher the density the stronger the
concrete
Activity 3: Comparing Different Concrete FormulationsPart B Making Concrete Samples
Objectives: Preparing three samples of cement to be tested for the strongest samplePrepare a sample with reinforcement to increase the strength and reduce the brittleness
Procedure:
Assigned formulati
on
Coarse Aggreg
ate(g)
Fine Aggrega
te(g)
Portland
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
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 0.55E+ 0.55f 0.65
Activity 4: Testing Properties of Concrete
Objectives; Testing the previous samples using the testing tool
Procedure
Activity 4: Testing Properties of ConcreteResults
Sample Amount of water needed to break the
sample
kgE 7.5
E+ 14F 4.2
Sample E+ is the strongest sample since it reinforced with wood, cotton and metal wire
Project: Application and Testing of Waste Glass Addition to Concrete MixGlass waste is very common and found in
very huge amounts In Qatar there is no glass recycling plant for
glass wasteLandfill are full of plastic and glass waste
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 22B 100 120 60 66 2 42.8C 120 120 60 66 0 14
Testing of the samples
Results of Testing The graph below shows the results of testing
Sample A
Sample B
Sample C
0
10
20
30
40
Water Weight Kg
Water Weight Kg
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.
AcknowledgmentMany 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.