Problem: A concrete mix for 3rd level floor, open sided parking garage f'c 30 MPa Slump = 50 -70mm Nominal aggregate size = 19mm Given: %3D 1. 50 tests on similar mix : SD= 4.5 MPa 2. Cement type 10 SG=3.15 3. Coarse Aggregate - Crushed Quarry Materials: - RD= 2.70 - Absorption = 1.0% - Oven dry density = 1650 kg/m - Moisture = 1.8% 4. Fine Aggregate - Crushed quarry sand - FM = 2.85 - RD = 2.65 - Absorption = 1.2% - Moisture = 6.7% 5. Air Admixture = 0.6 g/kg cement for 7% air Required: Design a concrete mix using the absolute volumes method.
Problem: A concrete mix for 3rd level floor, open sided parking garage f'c 30 MPa Slump = 50 -70mm Nominal aggregate size = 19mm Given: %3D 1. 50 tests on similar mix : SD= 4.5 MPa 2. Cement type 10 SG=3.15 3. Coarse Aggregate - Crushed Quarry Materials: - RD= 2.70 - Absorption = 1.0% - Oven dry density = 1650 kg/m - Moisture = 1.8% 4. Fine Aggregate - Crushed quarry sand - FM = 2.85 - RD = 2.65 - Absorption = 1.2% - Moisture = 6.7% 5. Air Admixture = 0.6 g/kg cement for 7% air Required: Design a concrete mix using the absolute volumes method.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Question
Design and control of concrete Mixtures
16th edition
Transcribed Image Text:Concrete Mix Design
Problem:
A concrete mix for 3rd level floor, open sided parking garage i
Given:
f'c 30 MPa
Slump = 50 -70mm
Nominal aggregate size = 19mm
1. 50 tests on similar mix : SD= 4.5 MPa
2. Cement type 10 SG=3.15
3. Coarse Aggregate
- Crushed Quarry
Materials:
- RD= 2.70
- Absorption = 1.0%
- Oven dry density = 1650 kg/m³
- Moisture = 1.8%
4. Fine Aggregate
- Crushed quarry sand
- FM = 2.85
- RD = 2.65
- Absorption = 1.2%
- Moisture = 6.7%
5. Air Admixture = 0.6 g/kg cement for 7% air
Required: Design a concrete mix using the absolute volumes method.
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Step 1 ACI 318 Mix design code 16 edition
VIEWStep 2 Find W/c ratio
VIEWStep 3 Find water content
VIEWStep 4 Find Cement content
VIEWStep 5 Admixture content
VIEWStep 6 Find Coarse content
VIEWStep 7 Find Fine aggregate
VIEWStep 8 Find Adjusted weight of Aggregates due to Moisture content MC
VIEWStep 9 Adjusted weight of Water due to Absorption capacity AC
VIEWStep 10 Final weight of mix design
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