In lime concrete, lime is used as a:
Correct Answer: A. binding material
🏛️ Role of Lime in Lime Concrete
In lime concrete, lime (calcium hydroxide or hydraulic lime) serves as the binding material — the role that Portland cement plays in cement concrete. The lime reacts slowly with CO&sub2; from the air (carbonation) or, in the case of hydraulic lime, with water, to form a hard, calcium carbonate or calcium silicate matrix that binds the aggregate together.
Lime acts as the binding material — option A.
Key takeaway
Lime concrete: lime = binder. Before cement was widely available, lime was the universal binder for mortars and concretes.