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  • Essay / The role of concrete in the material world

    "More concrete is used than any other artificial material in the world.[1] Since 2006, approximately 7 cubic kilometers of concrete are produced each year, or more cubic meter for every person on Earth.[2]” this briefly shows how concrete has greatly affected our lives since its invention. Concrete is one of the most commonly used construction materials to build different variations of infrastructure. It is composed of the following elements: cement which is generally Portland cement, water, aggregates (which are composed of fine and coarse aggregates) and admixtures which are added to the mixture immediately before or during mixing of the concrete . Therefore, the development of new materials in concrete has become widespread and thus constitutes a new source of innovation in which its performance has a massive effect. The development of these new types of concrete has improved versions to emphasize the durability, workability, mechanical properties as well as reliability of the concrete structures to be built. Therefore, new development from new materials means new process methods that can be economical and beneficial. There are different types of new methods in the field of concrete, one of them can build monolithic walls and slabs in one operation on a daily cycle, this is a formwork system called Tunnel Form. Say no to plagiarism. Get a tailor-made essay on “Why violent video games should not be banned”?Get the original essayTunnel Form is an advanced construction method that is suitable for the construction of apartment buildings, hotels, prisons, commercial developments, condominiums and other typical buildings. which are constructed with a high degree of repetition. It is a process that uses steel and concrete forms to fabricate a shell made up of a series of structural tunnels. It is an operation which consists of pouring slabs and walls in a single operation in a daily cycle. So when the process begins, the flow rate should be consistent with rotational forms every 24 hours. The walls and bridges are laid every day, which also includes the framework and plumbing, allowing, in just 3 days, work to be done on the newly formed tunnel spans, which can then be removed after their formation. In this method, to make an inverted U-shaped floor, wall and ceiling to form a single unit, the L-shaped units are locked together to make one. Other construction in the interior part, the reinforcements are fixed, the doors and corridors are boxed, and for lighting, conduits are installed, etc. The pouring of concrete is the next step, the gain in concrete strength due to the accelerating temperature rise; forms can be removed and repositioned the next day. Then the shapes are coated with steel, allowing the resulting cast surfaces to be decorated. To obtain this kind of method, elaborate steps, processes are given in order to have a systematized result. According to theconstructor.org, this validates these steps as follows: The tunnel formwork forms an "L" that is bolted together at the top to form a tunnel. The steel used in the formwork is reused up to 600 times to be able to produce a variety of different dimensions, making this method economical. A 24-hour rotation of its construction cycle to be carried out. In reality, the shape of the tunnel will appear like this when the two halves are bolted together: “The process of casting the tunnel formwork: Keep in mind: this is just one.