Composition and classification of concrete electric pole

Ordinary reinforced Concrete Pole Mould is mainly composed of reinforced concrete and concrete, concrete is an important part of the whole pole, with different kinds of concrete production of the pole its mechanical properties are not the same. Let's briefly analyze the composition and classification of the concrete used in the pole.

In the official definition of concrete, it is the general name of engineering composite material which is composed of cementitious material to cement aggregate into a whole. Intuitively speaking, the concrete used in the pole is a mixture of sand, stone, cement, water (mixed with admixtures or mineral mixing materials if necessary) mixed together in a certain proportion, also known as concrete mix.

Before the cement paste sets and hardens, the concrete has a certain workability, which is called fresh concrete; After hardening of concrete, it is hardened concrete, commonly known as artificial stone. Sand and stone (also known as coarse aggregate and fine aggregate) are the main components of concrete. As filling materials, they play the role of skeleton support, accounting for more than three quarters of the total volume of concrete. In addition, cement, as cementing materials, only accounts for one quarter of the whole. The concrete has more volume stability and better durability than cement paste alone. In contrast, the price of sand and stone is much lower than that of cement, which greatly reduces the cost of concrete and has good technical and economic benefits. Each component material in concrete is a strict mix ratio design, according to a certain proportion of mixed together, so the nature of each component material has a great impact on the concrete, in the production of Concrete pole mould, must be in strict accordance with the GB/T4623-2006 standard for the ratio.

Concrete can be roughly divided into the following three categories according to its surface density:

1, heavy concrete: dry apparent density is greater than 2600kg/m3;

2, ordinary concrete: dry apparent density between 1900-2500kg/m3, using sand and stone as aggregate, now used in the Pole Mold are such concrete, referred to as concrete.

3, light concrete: dry apparent density is less than 1900kg/m3, it includes light aggregate concrete, porous concrete and sand free large hole concrete, etc.

Concrete according to its function and use can be classified into structural concrete, waterproof concrete, heat resistant concrete and acid resistant concrete and so on.