Design a concrete mix for the following conditions and constraints using absolute volume method. Design Criteria: Structure: Beams and reinforced walls exposed to freezing and Thawing Required Strength: 28 MPa Minimum form dimension: 0.3m Minimum space between rebars: 65mm Minimum cover over rebars: 50mm Standard deviation of compressive strength of 2. MPa is expected (more than 30 samples) Classification: air entrained, mild exposure, Use exact value from table, use 75mm slump Material classification: Cement: Cement type II Air entrainer: 5 ml/1% air/100kg cement

Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
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Design a concrete mix for the following conditions and constraints using absolute volume method.
Design Criteria:
Structure: Beams and reinforced walls exposed to freezing and Thawing
Required Strength: 28 MPa
Minimum form dimension: 0.3m
Minimum space between rebars: 65mm
Minimum cover over rebars: 50mm
Standard deviation of compressive strength of 2. MPa is expected (more than 30 samples)
Classification: air entrained, mild exposure, Use exact value from table, use 75mm slump
Material classification:
Cement:
Cement type II
Air entrainer: 5 ml/1% air/100kg cement
Coarse aggregate:
Nominal maximum size: 19mm
Type: river source, gravel with crushed particles
Bulk oven dried specific gravity: 2.60
Absorption: 0.4%
Oven-dried rodded density: 1600 kg/m3
Moisture content: 2%
Fine aggregate:
Type: natural sand
Bulk oven dried specific gravity: 2.55
Absorption: 0.8%
Fineness Modulus: 2.80
Moisture content: 3%
Determine:
Air content, in percent -
Water content, kg/m³ –
Cement, in kg/m³ -
Admixtures -
in ml/m?
Transcribed Image Text:Design a concrete mix for the following conditions and constraints using absolute volume method. Design Criteria: Structure: Beams and reinforced walls exposed to freezing and Thawing Required Strength: 28 MPa Minimum form dimension: 0.3m Minimum space between rebars: 65mm Minimum cover over rebars: 50mm Standard deviation of compressive strength of 2. MPa is expected (more than 30 samples) Classification: air entrained, mild exposure, Use exact value from table, use 75mm slump Material classification: Cement: Cement type II Air entrainer: 5 ml/1% air/100kg cement Coarse aggregate: Nominal maximum size: 19mm Type: river source, gravel with crushed particles Bulk oven dried specific gravity: 2.60 Absorption: 0.4% Oven-dried rodded density: 1600 kg/m3 Moisture content: 2% Fine aggregate: Type: natural sand Bulk oven dried specific gravity: 2.55 Absorption: 0.8% Fineness Modulus: 2.80 Moisture content: 3% Determine: Air content, in percent - Water content, kg/m³ – Cement, in kg/m³ - Admixtures - in ml/m?
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