What unusual ingredient is added to concrete at a batching plant?

💡 The Answer

• Air is one of the ingredients combined in a concrete plant.
• Air entrainment improves concrete's resistance to freeze-thaw damage.
• Fly ash, silica fume, and slag are also added as supplementary materials.
• These materials enhance concrete strength and durability.
• The inclusion of air is a key factor in modern concrete mixes.