Question

What is the compound that constitutes about half the volume of portland cement and is responsible for the hardening or early gain in strength of the cement?

1) Clinker
2) Gypsum
3) Silica
4) Lime

Answer 1

The compound that constitutes about half the volume of Portland cement and is responsible for the hardening or early gain in strength of the cement is clinker.

Step-by-step explanation:

The compound that constitutes about half the volume of Portland cement and is responsible for the hardening or early gain in strength of the cement is Clinker.

Portland cement is a commonly used type of cement in construction. It is composed of various compounds, with clinker being the primary component. Clinker is produced by heating limestone, clay, and other materials in a kiln.

During the hydration process, water reacts with the clinker to form compounds that contribute to the hardening and strength gain of the cement. These compounds include calcium silicates, such as tricalcium silicate and dicalcium silicate.