Where does concrete get made?

In modern use, most of the production of concrete is carried out in a large type of industrial facility called a concrete batching plant, or often a batching plant. In general use, concrete plants come in two main types, premixed plants and central mixing plants. The most common way to manufacture portland cement is by a dry method. The first step is to extract the main raw materials, mainly limestone, clay and other materials.

After extraction, the rock is crushed. The first crushing reduces the rock to a maximum size of approximately 6 inches. The rock then goes to secondary crushers or hammer mills to reduce it to about 3 inches or less. The manufacture of concrete is quite simple.

First, cement is prepared (usually Portland cement). Then, the other added ingredients (such as sand or gravel), additives (chemical additives), any necessary fibers and water are mixed with the cement to form the concrete. Then the concrete is sent to the work site and laid, compacted and cured. The most important raw materials for the manufacture of cement are limestone, clay and marl.

These are extracted from quarries by blasting or tearing with heavy machinery. When making concrete, the Nabatea understood the need to keep the mixture as dry or with a low settlement as possible, since excess water introduces voids and weaknesses in the concrete. Concrete is a hardened building material created by combining a chemically inert mineral aggregate (usually sand, gravel or crushed stone), a binder (natural or synthetic cement), chemical additives and water. By 600 BC, the Greeks had discovered a natural pozzolanic material that developed hydraulic properties when mixed with lime, but the Greeks were not nearly as prolific in concrete construction as the Romans.

The period of time during which concrete was first invented depends on how the term “concrete” is interpreted. The words cement and concrete are both of Latin origin, reflecting the probability that the ancient Romans were the first to use the substances. Because this type of concrete is sometimes transported in an agitator truck, it is also known as mixed transit concrete. In 1902, August Perret designed and built an apartment building in Paris using steel-reinforced concrete for the columns, beams and floor slabs.

The building did not have supporting walls, but it did have an elegant façade, which contributed to the concrete being more socially acceptable. Trapped air also improves workability because bubbles act as a lubricant between the aggregate and particles in the concrete. Concrete made with Portland cement is considered superior to that made with natural cement because it is stronger, more durable and of more consistent quality. This means that the dome is essentially supported by 16 thick and structurally solid concrete pillars formed by the parts of the outer walls between the niches and the chambers.

Although there were exceptions, during the 19th century, concrete was mainly used for industrial buildings. Although concrete itself is not reinforced, structures built with reinforced concrete can better resist bending, and the technique was used internationally at the beginning of the 20th century. Later they discovered the advantages of hydraulic lime, that is, cement that hardens under water, and by 700 BC, they were building kilns to supply mortar for the construction of houses with rubble walls, concrete floors and waterproof underground cisterns. Concrete manufacturers expect their raw material suppliers to supply a consistent and consistent product.

The cement powder is then mixed with water and aggregates to form the concrete used in construction. .

Karl Santin
Karl Santin

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