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Concrete Mix Design

Course: Concrete Technology — Practice MCQs, solutions, formulas & past entrance questions.

Courses › Concrete Technology › Concrete Mix Design

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Chapter:

concrete-mix-design (Click to view content)

1. This cement content should ____ cement content required based on durability criteria.

Be more than Be equal to Be less than Not be less than

Not be less than

This cement content should not be less than cement content required based on durability criteria.

Hint Answer

2. According to IRC:15-2002 ___% Fly ash is required to be replaced with total cementitious materials.

15 20 25 30

25

According to IRC:15-2002, 25% Fly ash is required to be replaced with total cementitious materials and 20% was according to 2011.

Hint Answer

3. Depending on economical availability and dimensions of structure determine _________

Slump value The maximum size of aggregate The amount of mixing water The minimum water-cement ratio

The maximum size of aggregate

The value for maximum size of aggregate depends on economical availability and dimensions of structure determine.

Hint Answer

4. IS 1489(Part 2):1991 is for ________

Code of practice for general construction of plain and reinforced concrete for dams and other massive structures Specification for Portland pozzolana cement Part 1 Flyash based Specification for Portland-pozzolana cement: Part 2 Calcined clay based Methods of test for pozzolanic materials

Specification for Portland-pozzolana cement: Part 2 Calcined clay based

IS 1489(Part 2):1991 Specification for Portland-pozzolana cement: Part 2 Calcined clay based.

Hint Answer

5. During radiography test, which region absorbs less radiation and transmits more?

Low and high density regions absorb and transmit same amount of radiation High density region Low density region Low and high density regions adsorb

Low density region

This method uses short wavelength electromagnetic radiations such as X-rays and ? rays to detect internal defects. In this method component to be tested is placed in path of radiations caused due to X-rays or ? rays.

Hint Answer

6. According to IRC:15-2011, maximum free W/C ratio for PPC is _____

.45 .4 .5 .55

.5

According to IRC:15-2011, maximum free water cement ratio for PPC is .5 and for opc it?s .45.

Hint Answer

7. The aim of designer should always be to get concrete mixtures of optimum strength at _ cement content and workability.

Maximum, Nonacceptable Minimum, Nonacceptable Maximum, acceptable Minimum, acceptable

Minimum, acceptable

The aim of designer should always be to get concrete mixtures of optimum strength at minimum cement content and acceptable workability.

Hint Answer

8. What is approx. mix proportion for M25?

1:3:6 1:2:4 1:1.5:3 1:1:2

1:1:2

According to IS 456-2000 code, approximate value of mix proportion for grade M25 is 1:1:2.

Hint Answer

9. When sand is fully dry n it’s volume is _____

Equal Less More Can’t say

Equal

When sand is fully dry n re is 0 bulking in it. Therefore, volume of sand will be same.

Hint Answer

10. IS code for Specification for ordinary Portland cement, 33 grade?

IS 269:1989 IS 383:197 IS 455:1989 IS 456:2000

IS 269:1989

IS 269:1989 code is for specification for ordinary Portland cement of 33 grade. This standard covers manufacture and chemical and physical requirements of ordinary Portland cement.

Hint Answer

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All Chapters

View all Chapter and number of question available From each chapter from Concrete-Technology

Cement

Types of Cement and Testing of Cement

Types of Cement and Testing of Cement

Aggregates and Testing of Aggregates

Aggregates and Testing of Aggregates

Water

Admixtures and Construction Chemicals

Admixtures and Construction Chemicals

Fresh Concrete

Strength of Concrete

Strength of Concrete

Elasticity, Creep and Shrinkage

Elasticity, Creep and Shrinkage

Durability of Concrete

Durability of Concrete

Testing of Concrete

Testing of Concrete

Concrete Mix Design

Concrete Mix Design

Quality Control

Quality Control

Special Concrete and Concreting Methods

Special Concrete and Concreting Methods

IS Codes Related to Cement and Concrete

IS Codes Related to Cement and Concrete

Repair Technology for Concrete Structures

Repair Technology for Concrete Structures

Concrete Technology Important Questions

Concrete Technology Important Questions

Topics

This Chapter concrete-mix-design consists of the following topics

Concrete Mix Design

This cement content should ____ cement content required based on durability criteria.

According to IRC:15-2002 ___% Fly ash is required to be replaced with total cementitious materials.

Depending on economical availability and dimensions of structure determine _________

IS 1489(Part 2):1991 is for ________

During radiography test, which region absorbs less radiation and transmits more?

According to IRC:15-2011, maximum free W/C ratio for PPC is _____

The aim of designer should always be to get concrete mixtures of optimum strength at _ cement content and workability.

What is approx. mix proportion for M25?

When sand is fully dry n it’s volume is _____

IS code for Specification for ordinary Portland cement, 33 grade?

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