6.3.3. Organic Matter

Try these first

1. 1.

   What does organic matter in water include?

   Hint

   Think about natural materials that come from living organisms.

2. 2.

   Why is testing water for organic matter important?

   Hint

   Consider the outcomes if the concrete does not set properly.

3. 3.

   What type of organic matter can negatively affect concrete quality?

   • Only plant debris
   • Algae and sewage waste
   • Gravity

   Hint

   Consider all sources of organic materials.

4. 4.

   True or False: Organic matter can hasten the hydration process of concrete.

   • True
   • False

   Hint

   Think about hydration's role in concrete setting.

5. 5.

   A construction site has water with an organic matter level of 250 mg/L. Discuss the possible implications on strength and setting time with a focus on regulations.

   Hint

   Remember the limits we've discussed on organic content.

6. 6.

   Design a testing regime for water that guarantees it adheres to construction standards for organic content. Include the rationale behind each step.

   Hint

   Consider what tests ensure clean water.