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.