Repair work quite often involves the need not only for laying concrete, but also for its destruction. For this, different methods are used today. They are usually relevant when the destruction of the material should be carried out in large volumes, while it is possible to achieve high efficiency.
The use of hydrocline
The technology is based on the action of the tensile mechanism. Used hydraulic wedge allows you to generate a force equal to several hundred tons. Monolithic concrete under the influence begins to collapse, because it has a rather low tensile strength.
Dismantling concrete using hydraulic wedges involves drilling holes with a diamond drill. In the obtained holes, the diameter of which is the limit from 160 to 180 mm, hydroclin is inserted. The pumping mechanism is then actuated. Concrete begins to experience overload and tension, which contributes to its destruction.
Use of a hydraulic hammer
Other technologies may be used in the destruction of concrete. This should include a hydraulic hammer, which is a removable attachment mounted on an excavator instead of a bucket.
This device is connected to the hydraulic system, installation does not take much time.
Dismantling concrete with a hydraulic hammer allows you to quickly destroy structures, including:
- bridge supports ;
- concrete foundation;
- asphalt;
- reinforced concrete structures ;
- monolith.
If necessary, the opening of underground utilities, this technique is indispensable.
Using a jackhammer
For the reason that the destruction of concrete is today one of the most sought-after tasks in the repair and construction industry, specialists use different technologies, including a jackhammer. Such an approach can only be done by professionals, because physical strength and training are required.
If the coating depth is more than 15 cm, then special equipment will be needed. Dismantling concrete with jackhammers allows you to destroy concrete and brick structures. The power of the tool used is 25 J or more.
The disadvantage of this method is the formation of large amounts of dust and debris. It is better to use the technology if the room is not residential, otherwise the dust will cause discomfort. A jackhammer is indispensable for creating openings, grooves, holes and niches. The tool is capable of material of any thickness.
Demolition of concrete by different methods
The dismantling of concrete can be carried out according to a certain technology, which is determined by the purpose of the object. Taking into account some features, the following types of work can be carried out:
- mechanical;
- electro-hydraulic;
- semi-mechanical;
- explosive.
It is possible to classify work according to a simplified scheme; it can be shockless or shock. Dismantling concrete can be quite efficiently done by combining several methods. The design can be partially reconstructed.
But in the case of dismantling walls and partitions, manual equipment is usually used as a breaker hydraulic hammers. This method is quite common for the reason that it is inexpensive and convenient. Concrete dismantling can be carried out with jackhammers with different characteristics. It all depends on the size of the area. The power of devices can vary from 500 to 3360 watts.
In those places where it is not possible to achieve the desired result with a hydraulic hammer, sawing is used. The technology involves the use of a grinder with diamond discs. Working parts in the process are periodically cooled by air or water. This method is applicable when dismantling reinforced concrete structures or exposed parts of the foundation that have reinforced parts.
The impact method is also relevant for those objects that are connected to other buildings, because the grinder does not create vibrational vibrations. Only a loud noise can act as a disadvantage. The dismantling of concrete from the walls is carried out in this way. It allows you to ensure an even cut on the marked areas. For the diamond blade , guides are installed in the next step. Sometimes you need to make a deep cut or several. In this case, the cutting lines can be parallel to each other. Then, such areas are combined into one recess.
Alternative solutions
Concrete dismantling can be carried out using expansion mixtures, which are poured into cracks and holes. These substances crush concrete without mechanical impact. After a day or two, the material simply crumbles, it will only be necessary to clean the territory.
For primary or accurate destruction, you can use hydraulic shears, which have the form of attachments for special equipment.
Conclusion
If you do not plan to carry out the work yourself, then you can use qualified help. Diamond cutting, for example, will cost 5390 rubles. per m 3 . The maximum price level is kept within 9000 rubles. per cubic meter. If concrete needs to be destroyed in the area of the floor or floors, a wireline machine is usually used. For a cubic meter of destroyed material you have to pay 7000 rubles. minimum. If specialists use hydraulic hammers, then the maximum cost of such work will be 7,000 rubles. per cubic meter. The price is usually determined depending on conditions and complexity. The final price is affected by the thickness of the floors and walls, if specialists have to work with them.