Among the following components of cement which is present in highest amount ?

Options

A. `Ca_(2)SiO_(4)`
B. `Ca_(3)SiO_(5)`
C. `Al_(2)O_(3)`
D. `Ca_(3)Al_(2)O_(6)`

Explanation

To determine which component of cement is present in the highest amount, we can analyze the typical composition of Portland cement, which is the most common type of cement used.

### Step-by-Step Solution:

1. **Identify the Components of Cement**: The main components of Portland cement include:
- Tricalcium silicate (Ca3SiO5)
- Dicalcium silicate (Ca2SiO4)
- Tricalcium aluminate (Ca3Al2O6)
- Tetracalcium aluminoferrite (Ca4Al2Fe2O10)

2. **Know the Typical Composition**: The typical composition of Portland cement is approximately:
- Tricalcium silicate (Ca3SiO5): 51%
- Dicalcium silicate (Ca2SiO4): 24%
- Tricalcium aluminate (Ca3Al2O6): 6%
- Tetracalcium aluminoferrite (Ca4Al2Fe2O10): 6%

3. **Compare the Percentages**: From the composition:
- Tricalcium silicate (51%) is the highest.
- Dicalcium silicate (24%) is the second highest.
- Tricalcium aluminate (6%) and Tetracalcium aluminoferrite (6%) are the lowest.

4. **Conclude the Highest Component**: Since tricalcium silicate (Ca3SiO5) has the highest percentage (51%), it is the component present in the highest amount in cement.

5. **Select the Correct Option**: Among the given options, the correct answer is tricalcium silicate (Ca3SiO5).

### Final Answer:
The component of cement that is present in the highest amount is **Tricalcium Silicate (Ca3SiO5)**.

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