Q1) Designa concrete mixture proportions which will be used for offshore concrete platform.Norway is a world leader...

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Civil Engineering

Q1) Designa concrete mixture proportions whichwill be used for offshore concrete platform.Norwayis a world leader on offshore concrete platforms with1aof the world’s 30 larger offshore concretestructures located on the Norwegian continental shelf. The first ofthese platforms where the Ekofisk Tank installed in 1974 and thelast was Troll gravity based structure installed in 1996. TheSakhalin project is located in a harsh and artic environment whereconcrete structures have proven excellent characteristics with aminimum of maintenance. 80 mm slump value is required for theSakhalin project. 28-days concrete characteristic strength is2bMPa. It is required that no more than 1 testresult in 100 will fall below the specified strength. The fineaggregate has a fineness modulus of 2.60 and Zone 3. For CoarseAggregate (Uncrushed):SSD Bulk Specific Gravity: 2.65, AbsorptionCapacity: 2.b%, Total Moisture:1.c% and Dry Rodded Unit Weight: 1345kg/m3.  For Fine Aggregate (Uncrushed):SSDBulk Specific Gravity: 2.70, Total Moisture: 3.d%and Free Moisture: 2 %. Cement:  Portland CompositeCement, Specific Gravity: 2.97. For 0.e5m3of concrete, binder amount is calculated as 120kg(Use ACI Method of Mix Design)

with a=7

b=4

c=4

d=4

e=1

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