Civil Engineering - Concrete Technology - Discussion

Blast Furnace Slag Cement (BFSC) is a good option for thin R.C.C. structures!

BFSC has:
- Lower heat of hydration
- Reduced shrinkage
- Improved durability
- Resistance to sulfate attack

It's a suitable choice for thin R.C.C. structures because it:
- Reduces the risk of cracking
- Provides better workability
- Offers improved long-term performance

So, to correct my previous response, Blast Furnace Slag Cement is a suitable option for thin R.C.C. structures, whereas Rapid Hardening Cement is the one to be avoided.

The correct answer is: **low heat cement**.

Explanation:

For the construction of *thin reinforced concrete (R.C.C.) structures*, the *type of cement to be avoided* is *low heat cement*.

Here's why:
*Low heat cement** is designed to produce *less heat of hydration* during the setting and hardening process. This is useful for large structures (like massive foundations or dams) where excessive heat generation could lead to cracking due to thermal expansion.

However, *thin R.C.C. structures* typically do not have the same concerns about heat buildup, and the slower rate of strength development associated with low-heat cement may be disadvantageous for these applications.