Ex if std no: 1abcde, 161667 (a=6, b=1, c=6, d=6, e=7) In my case std 174702 Q1) Design...

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Civil Engineering

Ex if std no: 1abcde, 161667 (a=6, b=1, c=6, d=6,e=7)
In my case std 174702

Q1) Design a concrete mixture proportions which will be used foroffshore concrete platform. Norway is a world leader on offshoreconcrete platforms with 1a of the world’s 30 larger offshoreconcrete structureslocated on the Norwegian continental shelf. The first of theseplatforms where the Ekofisk Tank installed in 1974 and the last wasTroll gravity based structure installed in 1996. The Sakhalinproject is located in a harsh and artic environment where concretestructures have proven excellent characteristics with a minimum ofmaintenance. 80 mm slump value is required for the Sakhalinproject. 28-days concrete characteristic strength is 2b MPa. It isrequired that no more than 1 test result in 100 will fall below thespecified strength. The fine aggregate has a fineness modulus of2.60 and Zone 3. For Coarse Aggregate (Uncrushed): SSD BulkSpecific Gravity: 2.65, Absorption Capacity: 2.b %, Total Moisture:1.c % and Dry Rodded Unit Weight: 1345 kg/m3. For Fine Aggregate(Uncrushed): SSD Bulk Specific Gravity: 2.70, Total Moisture: 3.d %and Free Moisture: 2 %. Cement: Portland Composite Cement, SpecificGravity: 2.97. For 0.e5 m3 of concrete, binder amount is calculatedas 120 kg (Use ACI Method of Mix Design)

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Ans Let the total volume of trial mix be 1 m3 The nominalaggregate size suitable for construction of concrete platform is 19mmAccording to ACI 211191 table 633 for 80 mm slump andnominal aggregate size of 19 mm amount of water required percubic meter of concrete is 193 kg Amount of water 193 kg per m3 concreteSince concrete exposed to    See Answer
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