6.3.2. Dissolved Solids

Try these first

1. 1.

   What do we mean by 'dissolved solids'?

   Hint

   Think about what makes water not pure.

2. 2.

   Why are chlorides harmful in construction water?

   Hint

   Consider what happens to metal in saltwater.

3. 3.

   What is the maximum allowable TDS level in water for construction?

   • 1000 mg/L
   • 2000 mg/L
   • 3000 mg/L

   Hint

   Think about construction standards for water quality.

4. 4.

   True or False: High levels of chlorides can benefit concrete.

   • True
   • False

   Hint

   Consider the effect of salt on metal.

5. 5.

   Calculate the expected strength loss in a concrete structure that has been mixed with water having a TDS level of 3000 mg/L compared to a standard 1000 mg/L.

   Hint

   Consider how deviations from standards impact material properties.

6. 6.

   Develop a comprehensive treatment proposal for a construction site where groundwater has an average TDS value of 2500 mg/L.

   Hint

   Consider different treatment technologies available for water purification.