Asbestos-cement (asbestos-cement) pipes are the construction material made of asbestos fiber and portland cement. Asbestos and cement for production of pipes undertake in proportion 15:85.
Types and application of asbestos-cement pipes
There are two types of asbestos-cement pipes – pressure head and non-pressure.
Pressure pipes have inside diameter from 50 to 600 millimeters. Length is them 5 meters. Such pipes are calculated on high pressure – 6 or 9 atmospheres.
The durability and insignificant hydraulic resistance is characteristic of asbestos-cement pressure pipes. therefore they have found broad application in construction.
Pressure pipes apply at installation of water supply piping, laying of the gas pipeline, pressure head irrigation and meliorative systems. Asbestos-cement pressure pipes have found application at construction of wells, wells. They are also used for overlapping of farm buildings, under animals feeders.
Lack of asbestos-cement pipes is their increased fragility causing inconveniences in the course of mounting.
Apply pressure pipes at construction of pressure head sewerages, siphons and iloprovod. Non-pressure asbestos-cement pipes in length can be from 2, 95 to 5 meters. Inside diameter can vary from 50 to 500 millimeters. Such pipes use for mounting of external pipelines of non-pressure engineering networks – sewerages, flue, refuse chute, air offtake. Non-pressure pipes also apply as the mine or box when laying telephone and electric cables. As high electrical resistance has this appearance of asbestos-cement pipes and is not afraid of electrochemical corrosion. Use non-pressure pipes as support, columns and piles at installation of fences and other protections.
Advantages of asbestos-cement pipes
One of the most important advantages of asbestos-cement pipes is their durability. They can serve 30-40 years. Such pipes are corrosion resistant also to corrosive medium, they are simple in mounting and processing. Asbestos-cement pipes have the low cost and small weight. Listing advantages of these pipes it is necessary to mention also lack of need of their protection against stray voltages and underground waters.
The refuse chute and the system of the sewerage from pipes of this type has no negative impact on condition of the soil and the environment.
As asbestos-cement pipes have good heat-protective characteristics, at construction of water supply system, they can be stacked on smaller depth, than pig-iron or metal. Water in such pipes will not freeze at fall of temperature.