What Is Mix Design?

Types of Concrete Mix Design

1. Nominal Concrete Mix

2. Designed Concrete Mix

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3. Standard Mix

Advantages of Mix Design

1. Desired Proportions of Every Ingredient

2. Quality Concrete Mix: 

3. Economical Concrete Mix: 

4. Best Use of Locally Available Material: 

5. Desired Properties of Mix:

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Disadvantages of Mix Design

1. It requires a high initial cost.
2. Also, require skilled labor.
3. Also, requires specific attention.

Application of Mix Design

1. Find out the mean target brawn ft from compressive brawn at 28-day fck & quality control level, which is a key aspect in types of mix design. ft= fck + 1.65 S, where S = standard deviation.
2. Derive water-cement ratio for the target utilizing the relationship between compressive strength & water-cement proportion.
3. Evaluate air quantity which is entrapped for optimum nominal size of the blend.
4. Select the water content, for the specified workability & optimum size of blends.
5. Derive the share of fine mixture in total combination by absolute volume for the concrete utilizing coarse aggregate.
6. Regulate values of water & percentage of sand supplied for difference in workability & water-cement proportion.
7. Evaluate cement content from the water-cement proportion & additionally the final water content.
8. From water & cement per unit volume of concrete & percentage of sand already calculated, derive the quantity of coarse & fine aggregates per unit volume of concrete:

• • V = Absolute volume of concrete = Gross vol (1m3) – entrapped air vol
  • Sc= Relative density of cement
  • W = Mass of water/m3 concrete determined in kg
  • C = Mass of cement/m3 concrete evaluated in kg
  • p = Fine aggregate: total aggregate by absolute volume
  • fa, Ca= Total masses of fine & coarse aggregates/m3 of concrete, respectively evaluated in kg
  • Sfa, Sca= Specific gravities of saturated surface dry fine & coarse aggregates, respectively

Uses of Mix Design

• Designed to achieve the desired functionality within the plastic phase.
• Determine the minimal energy within the rigid phase.
• Supply concrete at a low cost.

Purpose of Mix Design

• Superior concrete mix design generates the foundation of a sound infrastructure.
• It is actually is a combination of modules which generates desired strength & sturdiness for the concrete structure.
• Because every ingredient within the mixture possesses a range of features, it’s not effortless to prepare a good concrete blend.
• Every one ingredient needs to be tested to note their features & therefore additionally the bearing capacity of the project location is also required to be examined.
• Water, fine sand, coarse aggregate, cement, chemicals, reinforcement, & soil needs to be checked.
• Values derived after testing are utilized for all mix designs. This makes sure that the structure is able to resist failure.

Mix Design

What Is Mix Design?

Types of Concrete Mix Design

Advantages of Mix Design

Disadvantages of Mix Design

1. It requires a high initial cost.
2. Also, require skilled labor.
3. Also, requires specific attention.

Application of Mix Design

Uses of Mix Design

Purpose of Mix Design

Shotcrete Mix Design

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