Cement

What is Cement?

Cement, often described as the backbone of construction, is a powdery substance that forms concrete when mixed with water, sand, and gravel. The meaning of cement lies in its ability to bind materials together, making structures strong and durable. 

The different types of cement have variations tailored to specific environmental conditions and construction needs. Cement's versatility and strength make it indispensable in building everything from homes to highways.

What is Cement Made of

Cement is primarily made from a mixture of limestone and clay. The combination is heated in a kiln at high temperatures to produce clinker, which is then finely ground with a small amount of gypsum to create the fine powder we know as cement. This process emphasises transforming natural earth materials into a product fundamental to modern construction.

Cement's Journey of Setting, Hardening and Curing

When cement mixes with water, it goes on a three-way journey:

1) Setting: Upon mixing with water, the cement begins to solidify. This initial phase can be relatively swift.

2) Hardening: Following the setting, the cement continues to solidify and gains strength over several days.

3) Curing: The curing process ensues, where the cement reaches its maximum strength. Curing can continue for weeks or even months after the initial setting.

Precautions to be taken While Handling Cement

When dealing with cement, certain precautions are necessary:

1) Wear protective gear: To prevent irritation from cement dust, protective eyewear, gloves, and masks should be worn.

2) Storage: Cement must be stored in a dry environment to prevent premature hydration.

3) Mixing: Water should be added to cement carefully and in controlled quantities to ensure proper consistency and strength.

4) Use promptly: Cement should be used soon after purchase as it can absorb moisture from the air, compromising its quality and effectiveness.