Design the concrete mix according to the following conditions.

Design Environment

Pavement slab, Bozeman, Montana (cold climate)

Required design strength=3000 psi

Slab thickness=12 in.

Statistical data indicate a standard deviation of compressive

strength of 250 psi is expected (more than 30 samples).

Only air entrainer is allowed.

Available Materials

Air entrainer: Manufacture specification is 0.15 fl oz/1% air/100

lb cement.

Coarse aggregate: 2 in. maximum size, crushed gravel (angular)

Bulk oven-dry specific gravity=2.573, Absorption=0.1%

Oven-dry rodded density=120 pcf

Moisture content=1%

Fine aggregate: Natural sand

Bulk oven-dry specific gravity=2.54, Absorption=0.2%

Moisture content=3.67%

Fineness modulus=2.68

Alpha Geek

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Status NEW Posted 21 May 2017 04:05 PM My Price 20.00

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