Start learning →

M.Tech Structural Workability of Fresh Concrete — practice questions

Explore 11 free Workability of Fresh Concrete questions in M.Tech Structural Civil Engineering. Open each question or exercise to read its content, reference answers and available explanation.

Practise Workability of Fresh Concrete with Quill →

Workability of Fresh Concrete questions and exercises with answers

Showing questions 1–11 of 11.

Per §5.3.1, the SINGLE most important factor governing the workability of fresh concrete is:Read the answer and worked solution →Per §5.4.1, in the slump test the tamping rod diameter used to compact each layer is:Read the answer and worked solution →Per Table 5.1, the slump range corresponding to a 'MEDIUM' degree of workability lies in approximately:Read the answer and worked solution →Per Table 5.1, the slump range corresponding to a 'HIGH' degree of workability is approximately:Read the answer and worked solution →Per §5.4.2, the K-Slump tester is described as a HANDY field apparatus whose total weight is approximately:Read the answer and worked solution →Per §5.4.3, the Compacting Factor Test was developed in Great Britain in the year:Read the answer and worked solution →Per §5.4.3, in the Compacting Factor Test the compacting factor is computed as:Read the answer and worked solution →Per §5.4.4, in the standard Flow Test the flow table is dropped through 12.5 mm at the rate of:Read the answer and worked solution →Per §5.4.5 (Kelly Ball Test), the metal hemispherical indenter used has a diameter of about 15 cm and weighs about:Read the answer and worked solution →Per §5.4.5, in the Kelly Ball test the minimum depth of concrete needed for a valid result is:Read the answer and worked solution →Per §5.5, segregation in fresh concrete refers to:Read the answer and worked solution →

Worked practice questions

Per §5.3.1, the SINGLE most important factor governing the workability of fresh concrete is:

  1. The compressive strength target
  2. The water content of the mix
  3. The age of the cement bag used
  4. The colour of the coarse aggregate
Show answer and solution

Correct answer: B. The water content of the mix

1. §5.3.1 opens: 'The single most important factor which governs the workability is the water content.' 2. The same paragraph warns that arbitrarily adding water reduces strength and may cause segregation and bleeding if more water is added, a proportional cement increase is needed to keep w/c constant. _Source: IGNOU ET-522 Block-2 Unit-5 Workability & Fresh Concrete-I, §5.3.1, p. 6_

Open this question →

Per §5.4.1, in the slump test the tamping rod diameter used to compact each layer is:

  1. 16 mm diameter
  2. 12 mm diameter
  3. 10 mm diameter
  4. 20 mm diameter
Show answer and solution

Correct answer: A. 16 mm diameter

1. §5.4.1: 'Each layer is tamped 25 times by the 16 mm diameter tamping rod uniformly.' 2. Both the layer count (4) and the strokes-per-layer (25) are the canonical values reproduced in IS code. _Source: IGNOU ET-522 Block-2 Unit-5 Workability & Fresh Concrete-I, §5.4.1, p. 8_

Open this question →

Per Table 5.1, the slump range corresponding to a 'MEDIUM' degree of workability lies in approximately:

  1. 0 to 25 mm slump
  2. 25 to 50 mm slump
  3. 50 to 100 mm slump
  4. 100 to 175 mm slump
Show answer and solution

Correct answer: C. 50 to 100 mm slump

1. Table 5.1: Very Low workability = 0-25 mm slump; Low = 25-50; Medium = 50-100; High = 100-175. 2. The corresponding compacting factor (large apparatus) for Medium workability is about 0.935. _Source: IGNOU ET-522 Block-2 Unit-5 Workability & Fresh Concrete-I, Table 5.1, §5.4.1, p. 9_

Open this question →

How to practise

  1. Choose a Workability of Fresh Concrete question and try to work out your answer.
  2. Open the question to check the correct answer and read its worked solution.
  3. Continue in the app for bite-sized lessons, explanations and review with Quill. You can start without creating an account.

More Civil Engineering topics

GATE Civil — Core TopicsCementStrength of MaterialsAggregatesTesting of ConcreteConcreting EquipmentConcrete Mix DesignSpecial Concrete