The way man constructs buildings and structures continues to progress through time. Back in Ancient Egypt, bricks were created by putting clay through special ovens. This created the basis of the bricks, which we see today. Cement mixers nowdays are a common sight in building structures such as sidewalks, yards and roads. The cement mixers' task is to carry and mix cement while constructing or repairing a building, foundation or a sidewalk. Cement is made out of asphalt. Asphalt is a Greek word, which means "secure". The Greeks also discovered that mixing asphalt with other materials and water produces a concrete-like material. It gives way to a compound that can be used for construction of structures and repairs when hardened.
Cement mixing works by combining several types of building material or compounds. It includes materials like sand, asphalt and limestone. The process of cement mixing began at 625 BC. Asphalt and cement provided a starting point in constructions in Babylon and with the Greek civilization as well. The art of cement mixing shortly faded until it came back in Europe during the 1500's. The type of construction, which the Greeks incorporated, was also widely used in Venezuela. They integrated the idea and began to utilize cement for building ships.
Back in the 1800's, Americans started to use cement for road construction. It was all part of the industrial revolution that paved the way to the industrial age. The process of cement mixing evolved and people from Trinidad had their cement taken from natural resources. In 1900's, different elements were included in the mixture to form the concrete which is used to create today's roads.
Automobiles started to become popular back in the 1920's. Together with this, cement mixers became famous as well. A compound was produced by placing mixers (which consist of trays) that were heated over coal fires. It is then treated and distributed with asphalt on top. Initially, the mix was stirred by hand until cement mixing drums were created. The mixing drums were stationery at the beginning even wheels where attached to it for mobility. It also allows the drums to build roadways and sidewalks without difficulty. The mixing drums were popular until the 1960's.
Environmentalists raised some issues regarding the cement mixers, which were widespread in the 1970's. Discussions about producing better cement mixers initially led to better technology for cement mixing. Cement mixtures used nowdays have a better mixture of materials. Characteristics such as skid and weather resistant mixtures are now used to create better roads and sidewalks. It even creates less noise compared to the cement mixtures before. The progress in the transportation industry also provided a great deal of support to the art of cement mixing. Today, we have 18 wheeler heavy trucks to provide a better mode of transportation for carrying cement. More than 90 percent of today's roads are constructed by using cement mixers that were just discussed.