Question

Which of the following are the basic ingredients for the concrete mixture?

• A. Pabbles and water
• B. Water, Sand and Cement
• C. Cement, wood and clay
• D. Clay and Cement

Hint:

A simple way to think of concrete is a paste of cement and water that coats and binds together aggregates (sand and gravel) to form a rock-like mass.

Answer 1

The Correct Option is B

Step 1: Definition of concrete.Concrete is a composite material made of aggregate, held together by cement that hardens over time.
Step 2: Core components.The main components are:

Binder: Cement (usually Portland cement)
Water: Needed for the chemical reaction (hydration) of the cement.
Aggregates: These are inert granular materials, categorized as fine aggregate (sand) and coarse aggregate (gravel or crushed stone).
Option (B) contains three essential ingredients. Although it leaves out the coarse aggregate, it is the most complete and correct option. The other choices have incorrect materials (wood, clay) or are incomplete.