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# All BEST Informative Concrete MCQ Practice Test Questions | Concrete Technology Related MCQ Series 3

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## All BEST Informative Concrete MCQ Practice Test Questions

All Concrete MCQs (multiple choice questions) with questions and answers for best practices for competitive exams will be included in this collection to crack competitive exams, so bookmark Civil Experience website for future learning and Help other friends by Sharing this concrete mcq article.

## Concrete Technology Part 3

Here in civil experience best civil engineering website, you will get the best learning and study materials, article, pdf, ppt, reports, etc for Concrete and others too so must join a civil experience blog and learn every day

## The characteristic strength of concrete is defined as that compressive strength below which is NOT more than

ANSWER = [C] 5% of results fall

## The modulus of rupture of concrete gives (GATE 1995)

ANSWER = [C] the tensile strength of the concrete under bending

## The cylinder strength of the concrete is less than the cube strength because of

ANSWER = [C] the friction between the concrete specimens and the steel plate of the testing machine

The cylinder strength of the concrete is less than the cube strength because of the friction between the concrete specimens and the steel plate of the testing machine

## The flexural strength of M30 concrete as per IS 456 : 2000 is [GATE 2005 : 2 Marks]

The flexural strength of M30 concrete as per IS 456:2000 is 3.83 MPa

## As per IS 456:2000, the flexural strength of concrete at 28 days of ageing is related to compressive strength by the equation:

### Characteristic Strength of Concrete (fck)

The compressive strength of concrete is given in terms of the characteristic compressive strength of 150 mm size cubes tested after 28 days

The characteristics strength is defined as the strength of concrete below which not more than 55 of the test results are expected to fall

### Flexural Strength of Concrete

The theoretical maximum flexural tensile stress occurring in the extreme fibers of RC beam, which causes cracking is referred to as the modulus of rupture (fcr)

Clause 6.2.2 of IS 456 gives the modulus of rupture of flexural tensile strength as 0.7√fck

## As per IS 456, splitting tensile strength (fcr) of concrete may be estimated from compressive strength as

ANSWER = [B] fcr = 0.7√fck

Also ReadConcrete Technology MCQ Series Part 1
Also ReadConcrete Technology MCQ Related Test Series 2

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