10.4. ASTM Standards

Try these first

1. 1.

   What does ASTM C1202 measure?

   Hint

   Think about how important chloride is to concrete durability.

2. 2.

   What does ASTM C876 evaluate in concrete?

   Hint

   Consider the factors that might lead to corrosion in concrete.

3. 3.

   What does ASTM C1202 measure effectively?

   • Water absorption
   • Charge passed for chloride penetration
   • Compressibility

   Hint

   Consider what leads to corrosion.

4. 4.

   True or False: A more negative value in ASTM C876 indicates a higher likelihood of corrosion.

   • True
   • False

   Hint

   Think about how electrical potential relates to corrosion risk.

5. 5.

   You are given a concrete sample tested by ASTM C1202 with a result of 3500 coulombs. Analyze the implications for this structure's long-term performance in a coastal environment.

   Hint

   Consider how environmental conditions interact with results.

6. 6.

   A reinforced concrete beam showed a half-cell potential reading of -500 mV consistently over time. What steps would you recommend to mitigate the risks of corrosion?

   Hint

   Determine preventative measures based on the readings.