It can be argued that the modern world couldn't have been built without cement. Companies like Rojac Construction in Wailuku, Hawaii, would agree with the sentiment, as would thousands of commercial contractors. After all, cement is the main component of concrete, a material that is used in almost all construction projects.

Here’s a look at how to make cement used by commercial contractors:

• Gathering of Raw Materials: There are two ways of making cement — the dry and wet method. Portland cement, which commercial contractors commonly use, utilizes the dry method. The first step in this process is to quarry raw materials like chalk, limestone, clay, or slate and crush them into small pieces.

• Heating Using a Cement Kiln: Once the raw materials have been crushed, they're mixed with components like fly ash or iron ore and heated in a kiln at 2,700 degrees Fahrenheit. These massive kilns have a cylinder-shaped rotary oven composed of firebricks. The raw materials slowly work their way down through the bottom. They then pass out from the kiln in the shape of grey, marble-sized stones called clinkers.     

• Cooling Down the Clinkers: Once the clinkers are discharged from the kiln, they go through several coolers to bring down their temperature to manageable levels. Modern kilns return the heated air given off by the cooling clinkers to the kilns to save fuel and boost burning efficiency.     

• Grinding & Mixing: The final step is to grind the cooled down clinker into a fine powder. Gypsum and limestone are then added to the clinker mixture and shipped out to different commercial contractors to be used in their infrastructure projects.

If you're looking for the best in construction services, Rojac Construction is the one for you. These commercial contractors offer construction, demolition, and excavation services. The company's 70 years of experience are backed by a staff of licensed engineers. To know more about their services, check out their website or call (808) 986-1105.