Assume that you are going to make a three cubic yard (3yd³) of concrete. Create your own mix design to make the three cubic yards of concrete under a given condition. Conditions: • The design compressive strength: 3,800 psi. • The slump should be between 3 and 4 in. • The maximum aggregate size: 2 in. • The properties of the materials are as follows: Non-air-entrained Concrete: unit weight = 150 (lb/ft³) • Coarse Aggregate (Gravel (well rounded)): unit weight = 110 lb/ft Fine Aggregate: fineness modulus = 2.70 Aggregate surface moisture is not considered in this example
Assume that you are going to make a three cubic yard (3yd³) of concrete. Create your own mix design to make the three cubic yards of concrete under a given condition. Conditions: • The design compressive strength: 3,800 psi. • The slump should be between 3 and 4 in. • The maximum aggregate size: 2 in. • The properties of the materials are as follows: Non-air-entrained Concrete: unit weight = 150 (lb/ft³) • Coarse Aggregate (Gravel (well rounded)): unit weight = 110 lb/ft Fine Aggregate: fineness modulus = 2.70 Aggregate surface moisture is not considered in this example
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:Determine required strength:
Select the W/C ratio:
Calculate the cement content (provide solving process):
Estimate coarse aggregate content (provide solving process):
Estimate fine aggregate content (provide solving process)
Transcribed Image Text:Assume that you are going to make a three cubic yard (3 yd³) of concrete. Create your own
mix design to make the three cubic yards of concrete under a given condition.
Conditions:
• The design compressive strength: 3,800 psi.
• The slump should be between 3 and 4 in.
•
The maximum aggregate size: 2 in.
The properties of the materials are as follows:
•
Non-air-entrained Concrete: unit weight 150 (1b/ft³)
Coarse Aggregate (Gravel (well rounded)): unit weight = 110 lb/ft
Fine Aggregate: fineness modulus = 2.70
• Aggregate surface moisture is not considered in this example
Estimate the water content:
Adjust water content for aggregate shape:
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