concrete, concrete boat sis5
TRANSCRIPT
AL-BAIRAQSCIENCE IN SPORTS
CONCRETE BOATNBAA_Scienctis5
Yousif Saeed Abdullah Al-SaeariAbdullah Makki khalifa Al-Dosari
OUTLINE• Introduction• Activity 1: Hunting for Objects Made
of Concrete• Activity 2: Comparing Different
Kinds of Cement• Activity 3:Comparing Different
Concrete Formulations• Product Idea: Concrete Boat
INTRODUCTION Concrete is composite material from water, sand, coarse aggregate and most importantly cement.
It has unique properties which are strong, cheap, formability and durability
It is considered the base for infrastructure
ACTIVITY 1:HUNTING FOR OBJECTS MADE OF CONCRETE Objective: Searching for the usage of concrete around us
USAGE OF CONCRETE IN QATAR
Conclusion: Concrete is used every where around us Because it’s strong, formable, durable and cheap
ACTIVITY 2: COMPARING DIFFERENT KINDS OF CEMENT Objective: Compare which sample will harden faster with additives Procedure
ACTIVITY 2: COMPARING DIFFERENT KINDS OF CEMENT
Results
Sample C hardens faster than the other samples Sample B hardens slower than the other samples Eventually all samples will harden
CONCLUSION Salt acted like a catalyst, hence the hardening reaction of cement was faster
Sugar was anti-catalysit so the reaction was slower
ACTIVITY 3: COMPARING DIFFERENT CONCRETE FORMULATIONSoObjective Prepare three concrete formulations and compare their densities oDetermine the best concrete formulation according to density Procedure
ACTIVITY 3: COMPARING DIFFERENT CONCRETE FORMULATIONS
Results Density law p=m/v
The 50:50 ratio give the highest density and hence the strongest concrete
Type of sample
Mass g Volume cm3
Density g/cm3
Coarse aggregate only
100g 42 100/42= 2.32
Fine aggregate only
100 57 100/57=1.75
Mixed aggregate 50:50
100 Coarse:50Finei:50
40 100/40 = 2.5
Mixed aggregate
100Coarse:40Finei:70
52 100/52 = 1.723
CONCLUSION All the pore and opining in the concert are filled with this ratio
The lowest volume leads to the highest density
PROJECT DESIGNING AND MAKING CONCRETE BOATTRIAL 1: UNSUCCESSFUL
Objectives: As a group our objective is to design a boat made from concrete and it should have the ability to float and carry weight
Reason The boat was leaking water in
Cement
Sand Water Fly ash Silica
Quantity
780g 3120g 1040g 468g 312g
TRIAL 2SUCCESSFUL TRAIL Improvements made: Fix the leak by using cement and water
ACKNOWLEDGMENTThe group would like to dedicate a special than you to the sponsors UNESCO, Qatar National Commission, Ras Gas and Shell.Also we would lie to thank Qatar University and Eng. Ruba Ali