Dismantling of concrete: features and methods

Repair work often requires 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 impact of a stretching mechanism. The hydraulic wedge used makes it possible to form a force equal to several hundred tons. Monolithic concrete under the influence begins to collapse, because it has a fairly low load-bearing capacity for breaking.

Dismantling of concrete with the help of hydraulic drills provides drilling holes with diamond drill. In the resulting holes, whose diameter is a limit of 160 to 180 mm, inserts a hydrocline. The blowing mechanism is then actuated. Concrete begins to experience overload and stress, which contributes to its destruction.

Using a hydraulic breaker

Other technologies can be used in the destruction of concrete. This includes a hydraulic hammer, which is a hinged replacement equipment, mounted on an excavator instead of a bucket. This device is connected to the hydraulic system, installation does not take much time.

Dismantling of concrete with a hydraulic hammer allows the destruction of structures in a short time, among which:

• Bridge supports;
• Concrete foundation;
• asphalt;
• reinforced concrete structures;
• monolith.

If it is necessary to open underground communications, this method is irreplaceable.

Using a jackhammer

For the reason that the destruction of concrete acts today as one of the most demanded tasks in the repair and construction sector, specialists use different technologies, among them a jackhammer. This approach is only possible for professionals, because physical strength and preparation will be required.

If the depth of the coating is more than 15 cm, special equipment will be needed. Demolition of concrete with jackhammers allows to destroy concrete and brick structures. The power of the instrument is 25 J and more.

The disadvantage of the method is the formation of a large amount of dust and debris. It is better to use the technology if the room is not residential, otherwise dust will cause discomfort. The jackhammer is indispensable for creating openings, grooves, holes and niches. The tool is capable of material of any thickness.

Dismantling of concrete by different methods

Dismantling of concrete can be carried out by a certain technology, which is determined by the purpose of the object. Taking into account some peculiarities, the following types of work can be carried out:

• mechanical;
• Electrohydraulic;
• Semi-mechanical;
• explosive.

Classify the work can be and under the simplified scheme, it happens unstressed or shock. Demolition of concrete can be done quite effectively by combining several methods. The design can be partially reconstructed.

But in the case of the dismantling of walls and partitions, manual equipment such as hydraulic hammers is usually used. This method is quite common for the reason that it is inexpensive and convenient. Dismantling of concrete can be carried out with jackhammers with different characteristics. Everything depends on the size of the area. The power of the devices can vary from 500 to 3360 watts.

In those places where a hammer does not have the ability to achieve the desired result, sawing is used. The technology involves the use of a Bulgarian with diamond discs. Work parts in the process are periodically cooled by air or water. This method is applicable when dismantling reinforced concrete structures or open parts of the foundation that have reinforced parts.

The method of impact is relevant for those objects that are connected to other buildings, because the Bulgarian does not create vibrational vibrations. Only loud noise can act as a defect. Dismantling of concrete from walls is carried out in this way. It allows to ensure a smooth cut on the marked areas. For the diamond disc , guides are set in the next step. Sometimes you need to make a deep cut or several. In this case, the cutting lines can be arranged parallel to each other. Then such areas are combined into one depression.

Alternative solutions

Dismantling of concrete can be carried out with the help of expansion mixtures, which fall asleep in cracks and holes. These substances crush concrete without mechanical impact. In a day or two the material simply crumbles, you will only need to clear the territory.

For primary or accurate fracture, it is possible to use hydroscissors, which have the form of attachments for special equipment.

Conclusion

If the work you do not plan to do on your own, 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 field of floor or floors, then a rope automatic is usually used. For a cubic meter of destroyed material, you will have to pay 7,000 rubles. minimum. If specialists use hammers, the maximum cost of such works will be 7000 rubles. Per cubic meter. The price is usually determined depending on the conditions and complexity. The final price is affected by the thickness of the floors and walls, if specialists have to work with them.