6.6.3. River and Surface Water

Try these first

1. 1.

   What are some common impurities found in river and surface water?

   Hint

   Think about materials that are not water.

2. 2.

   Why is pH testing important?

   Hint

   Remember, pH affects setting time and strength.

3. 3.

   What is a common issue with river water quality?

   • Pure and Clean
   • Suspended Solids
   • Safe for all uses

   Hint

   Consider what nature might add to the water.

4. 4.

   Is river water suitable for concrete without testing?

   • True
   • False

   Hint

   What if the water has contaminants?

5. 5.

   You are given river water with a pH of 5.8 and a high level of organic matter. Describe your approach to remedy this situation for construction use.

   Hint

   Think about how we adjust pH for swimming pools.

6. 6.

   A construction site wants to use surface water from near an industrial area. Discuss the risks and necessary precautions.

   Hint

   What threats can chemicals present to concrete integrity?