Which of the following is the most suitable for the construction of a pillar?

Options

A. cement mortar
B. concrete
C. RCC
D. pure cement

Explanation

To determine which material is the most suitable for the construction of a pillar, we will analyze the given options: cement mortar, concrete, RCC, and pure cement.

### Step-by-Step Solution:

1. **Understand the Options**:
- Cement Mortar: A mixture of cement, sand, and water used for binding bricks or stones.
- Concrete: A mixture of cement, sand, gravel, and water, known for its strength and durability.
- RCC (Reinforced Cement Concrete): Concrete that is reinforced with steel bars or mesh to enhance its tensile strength.
- Pure Cement: Just cement without any aggregates or reinforcements.

2. **Evaluate the Strength of Each Material**:
- Cement Mortar is primarily used for bonding and does not have significant structural strength.
- Concrete is strong but lacks tensile strength, which can lead to cracking under tension.
- RCC combines the compressive strength of concrete with the tensile strength of steel, making it suitable for heavy loads and structural applications.
- Pure Cement is not used for construction as it does not have the necessary properties to support structures.

3. **Identify the Most Suitable Material**:
- Among the options, RCC is the most suitable for constructing a pillar due to its enhanced strength and ability to withstand various stresses. The reinforcement provided by steel bars makes RCC ideal for structural applications.

4. **Conclusion**:
- Therefore, the most suitable material for the construction of a pillar is **RCC (Reinforced Cement Concrete)**.

### Final Answer:
The most suitable material for the construction of a pillar is **RCC (Reinforced Cement Concrete)**.

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