Identify which contributes for strengthening of lime mortar structures and contributes for weake

Question

Supreeta N · Accepted Answer

1. Usage of water containing dissolved salts: This can weaken both lime mortar and RCC structure

Identify which contributes for strengthening of lime mortar structures and contributes for weaken- ing of RCC structures. (a) usage of water containing dissolved salts (b) addition of lime (c) absorption of $\mathrm{CO}_{2}$ from atmospheric air (d) both $(2)$ and $(3)$