Use the American method to design a concrete mix which is required to have a specified mean strength of 30 MPa (4400 psi) at 28 days. The presence of reinforcement requires a slump of 75 mm (3 in.) and a maximum size of aggregate of 10 mm ( in.). The aggregates are of normal weight and their gradings conform to the appropriate standard with a fineness modulus of 2.8. Assume: negligible absorption and moisture content; bulk density of coarse aggregate 1600 kg/m'; and extreme exposure conditions. Note: The density of concrete is 2355 kg/m3

Structural Analysis
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Chapter2: Loads On Structures
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H.W
Use the American method to design a concrete mix which is required
to have a specified mean strength of 30 MPa (4400 psi) at 28 days.
The presence of reinforcement requires a slump of 75 mm (3 in.) and
a maximum size of aggregate of 10 mm ( in.). The aggregates are
of normal weight and their gradings conform to the appropriate
standard with a fineness modulus of 2.8.
Assume: negligible absorption and moisture content; bulk density of
coarse aggregate 1600 kg/m'; and extreme exposure conditions.
Note: The density of concrete is 2355 kg/m3
Transcribed Image Text:H.W Use the American method to design a concrete mix which is required to have a specified mean strength of 30 MPa (4400 psi) at 28 days. The presence of reinforcement requires a slump of 75 mm (3 in.) and a maximum size of aggregate of 10 mm ( in.). The aggregates are of normal weight and their gradings conform to the appropriate standard with a fineness modulus of 2.8. Assume: negligible absorption and moisture content; bulk density of coarse aggregate 1600 kg/m'; and extreme exposure conditions. Note: The density of concrete is 2355 kg/m3
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