13.1. Introduction

Try these first

1. 1.

   What is fresh concrete?

   Hint

   Think about what happens to concrete after it is mixed.

2. 2.

   List one factor affecting workability.

   Hint

   Consider how adding or changing materials affects work.

3. 3.

   What is the definition of fresh concrete?

   • Concrete that is hardened
   • Concrete that is fully mixed and workable
   • Concrete that is being transported

   Hint

   Remember what state concrete is in just after mixing.

4. 4.

   Segregation in concrete refers to which of the following?

   • True
   • False

   Hint

   Think about how materials might drift apart.

5. 5.

   Design a comprehensive plan to test five different concrete mixtures for their workability, incorporating methods like the Slump Test and the Flow Table Test.

   Hint

   Consider both aggregate types and admixture variations.

6. 6.

   How might you adjust a concrete mix if you found that it had low workability during the Slump Test?

   Hint

   Think about what directly influences how easily concrete can flow.