3.2. Water-Cement Ratio

Try these first

1. 1.

   What does the water-cement ratio affect?

   Hint

   Think about the functions of concrete.

2. 2.

   What is an ideal w/c ratio for severe exposure conditions?

   Hint

   Consider environmental conditions.

3. 3.

   What is the recommended maximum water-cement ratio for durable concrete in severe exposure?

   • 0.40
   • 0.45
   • 0.50

   Hint

   Think about environmental conditions.

4. 4.

   True or False: A higher water-cement ratio leads to stronger concrete.

   • True
   • False

   Hint

   Consider the relationship between water and cement.

5. 5.

   A contractor insists on using a w/c ratio of 0.60 for a marine structure purely for workability. What are the potential long-term implications of this choice, and how could you argue for a lower ratio?

   Hint

   Consider the life span of marine structures.

6. 6.

   Given a concrete strength requirement of 35 MPa, propose a water-cement ratio based on typical structural guidelines. Explain your reasoning.

   Hint

   Reflect on typical exposure conditions and structural requirements.