The use of concrete is widely spread across the world. The material is not only durable, but can also mitigate the effects of pollution from other industries. However, before we go into how concrete works, we must understand its basic characteristics. Read on to learn more. The first thing to remember is that the use of concrete is not only beneficial for the environment, but is also an excellent choice for building structures. This article explains the different uses of the material.
Normally, concrete is a mix of cement and sand, with a ratio of 1:24 or 1:25. This blend is suitable for ordinary construction, and most manufacturers use this proportion. The design mix is based on laboratory tests and depends on the required strength and compressive strength for the structure dich vu bom be tong. The second type of concrete is made by machine, and is known as fresh concrete. It takes about thirty to ninety minutes to set. The material used in this process is classified as coarse, medium, and fine.
The first type of concrete is the normal mix, which is made from a 1:14 ratio. It takes between 30 minutes to 90 minutes to harden, and is commonly used for buildings and pavements without a high tensile strength. This type of concrete is not good for structures, since it cannot withstand stresses resulting from vibrations and wind loads. You can choose to make your own mixture or have it manufactured by a concrete supplier.
There are many types of concrete, but the most common is plain. It has a density of about 20,000 kg/m3 and is usually used for buildings and pavements. Lightweight concrete is also a type of concrete, with a density of less than twenty-five kilograms/m3. It has been the standard concrete for decades and is the best choice for lightweight constructions. This type of concrete is also used in Dam construction. When the density of a concrete is less than a few hundred grams/m3, it is considered lightweight.
Ordinary concrete is a mix of two types of aggregates. The fines are usually sand, while the coarses are gravel and crushed stone. The size of the aggregates will determine the strength of the final product. For normal construction, a 1:24 ratio is commonly used for the coarse aggregates. The coarses are typically larger and are typically 6.5 mm in size. It is important to note that the use of the finer aggregates is more common in homes and smaller constructions, while the finer aggregates are more expensive for construction projects.
The amount of aggregates in a concrete mixture varies, but is typically between two and five grams per cubic foot. The fines are about 0.001 inch, while the coarses range from 6.5 to 38 mm. Unlike sand, which is relatively soft, concrete is abrasive, so it can easily damage the surface of a building. This is why it is so important to get the right kind of aggregates for a project.