CEE 214
Engineering Materials
Spring’2023
Assignment#2
50 Points
Due Date: 09/05/2023
1) Design the concrete mix according to the following conditions. Scale batch to produce 5-cubic
feet of material.
Design Environment
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Exposure – concrete protected from exposure to freezing and thawing, application
of deicing chemicals or aggressive substances
Required design strength = 4000 psi
Slab thickness = 6 in.
Target slump = 2.5 in.
Statistical data indicate a standard deviation of compressive strength of 400 psi is
expected (more than 30 samples)
Non-Air-Entrained Concrete
No admixtures
Available Materials
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Type I cement, specific gravity = 3.15
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Coarse aggregate: 3/4" nominal maximum sized angular aggregate
o Bulk oven-dry specific gravity = 2.72
o Absorption = 1.35%
o Bulk density = 100 pcf
o Moisture content = 0.78%
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Fine aggregate: Natural sand
o Bulk oven-dry specific gravity = 2.49
o Absorption = 1.75%
o Bulk density = 110 pcf
o Moisture content = 0.73%
o Fineness modulus = 3.00
Justify all assumptions made, provide clear and complete work, and list all references used.
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