Question

In order to determine the workability of a concrete mixture, the recommended tests are: (A) Flow test
(B) Compaction Factor test
(C) Flexural strength test
(D) Slump test
Choose the correct answer from the options given below:

• A. (B), (C) and (D) only
• B. (A), (B) and (C) only
• C. (A), (B), (C) and (D)
• D. (A), (B) and (D) only

Hint:

The Compaction Factor and Slump tests are the standard methods for evaluating the workability of concrete mixtures.

Answer 1

The Correct Option is A

Step 1: Concrete Mixture Workability.
Workability describes how easily concrete can be mixed, placed, and finished. Various tests assess this property.

Step 2: Test Analysis.
- (A) Flow test: Measures concrete mixture flow, which relates to workability. It's less common for workability assessment.
- (B) Compaction Factor test: A standard method for assessing concrete workability, especially for dense concrete.
- (C) Flexural strength test: Measures concrete strength under bending forces. It doesn't directly measure workability.
- (D) Slump test: A common test to measure consistency and workability, especially in fresh concrete.

Step 3: Conclusion.
Common workability tests include the Compaction Factor and Slump tests. The Flexural strength test isn't used for workability assessment, making option 1 the correct answer.

Final Answer:
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