Rings of concrete - assignment and classification
Manufacture of such elements is carried out with the use of high-quality concrete and reinforcing mesh skeletons. The sizes of the base rings are standardized by standards. Typical reinforced concrete products for wells are divided into three groups: small, medium and large.
Accordingly, a group of small rings include rings of meter internal diameter, with a wall thickness of 16 and a height of 90 centimeters. The weight of this ring is six hundred kilograms. One-and-a-half-meter rings of the same height, weighing one ton, form an average group size, and the category of large ones includes one-and-a-half rings with a diameter of two meters.
ZHBI rings of wells are made of high-quality concrete and in construction are widely used. In addition to these examples, rings are in demand in the construction of wells in a private home. The sets of the above groups of sizes of rings include covers and bases( bottoms) of structures corresponding to the diameters and are mandatory elements of the entire construction of the well.
If the purpose of the rings is the creation of solid walls of the well( why they are often called wall walls), then the purpose of the bases is to prevent siltation of the well. When it is necessary to ensure the closing of the part of the wall ring protruding above the ground level, typical types of lid constructions are used. According to these dimensions, rings can also be divided into classes: A - up to a meter in diameter, and more than a meter - B. The first is more often used for installing wells.
ZHBI rings of wells - the principle of manufacturing
When making sections, special shapes for concrete reinforced concrete rings are used. This kind of formwork sets the dimensions of the outer and inner diameters of the future element. A special reinforcing mesh is placed in the space between them and a solution is poured.
For better compaction, the mold is subjected to vibratory action, compressing the concrete. As a result, the product receives high strength and performs its functions qualitatively, sustaining significant soil loads. In the process of making rings, special brackets, called running shoes, can be installed.
Industrial reinforced concrete rings of wells can have special rebated locks. These are the protrusions in the lower part of the rings and the corresponding return grooves in the upper part. This structural feature is preferable, becauseallows to conduct a reliable and hermetic fixation of the wellbore, avoiding the displacement of constituent rings.
In addition to wall rings of standard sizes, wall accessories are available, differing in height and used when necessary to build a part of the well projecting above the ground. It features such a lower height, compared to standard rings.
RCW rings are wells - we produce
ourselves. If necessary, for example, products with a diameter smaller than the standard one, it is possible to make rings of concrete products with our own hands , keeping sizes according to the particularities of the concrete well being under construction. As with other concrete works, the composition of the mixture is determined by the ratio by weight or( which is significantly less) in terms of its constituents: gravel( or crushed stone), sand and cement.
The unit of reference is always the amount of cement. The water-cement ratio is important: for well rings it is from 0.5 to 0.7 part of cement. In turn, sand is taken from two to two and a half parts of cement. Granite gravel - from three to four parts respectively. These relationships provide the maximum density of the concrete produced.
The work on the manufacture of concrete begins with the mixing of sand and cement, then water is added and again thoroughly mixed. Then the gravel is pre-soaked in water. Stacking is carried out after careful mixing of concrete. Each layer in the ring is rammed to the cement milk. The quality of compaction and the further hardening of the mold directly determine the strength of the entire product.
