The question asks to identify the cement type that is also known as ‘Snowcrete’.

Understanding 'Snowcrete' and White Cement

The term ‘Snowcrete’ is often used as a descriptive name or trade name for a specific type of cement known for its very light color, resembling snow.

What is White Cement?

White cement is a variety of Portland cement. The primary difference between regular grey Portland cement and white cement is its color. This whiteness is achieved by carefully controlling the raw materials used in its production. White cement is produced from raw materials that are low in iron oxide and manganese oxide, which are the compounds that give ordinary cement its grey color. Special clays and limestone with low iron content are used, and manufacturing processes minimize contamination.

Why is White Cement Called 'Snowcrete'?

Due to its bright white color, white cement is commonly referred to or known by the descriptive term ‘Snowcrete’. This name highlights its pure white appearance, making it suitable for decorative purposes where the color of the cement needs to be bright white, such as in facades, precast decorative panels, terrazzo, and tile grouts.

Analyzing the Options

Let's look at the other options to understand why they are not typically called 'Snowcrete':

• Hydrophobic Cement: This cement contains additives that reduce the rate of deterioration when stored in damp conditions. Its main characteristic is water repellency, not color.
• Portland Pozzolana Cement: This is a type of blended cement where Portland cement clinker is combined with a pozzolanic material (like fly ash, volcanic ash, or calcined clay). It is usually grey in color, similar to ordinary Portland cement.
• Coloured Cement: This refers to cement that has pigments added to it to achieve various colors. While it can be white cement with added pigment to make other colors, the term 'Coloured Cement' is broad and doesn't specifically refer to the bright white type known as 'Snowcrete'.

Based on the characteristic bright white color that resembles snow, White Cement is the type of cement that is also known as ‘Snowcrete’.

Therefore, the correct answer is White Cement.