Why are fixtures needed? Their types and characteristics

In order for walls, ceilings, columns and other building elements to be strong and reliable, various devices are used. One of them is reinforcement clamps. With their help, the reinforcement bars and reinforcing mesh are fixed. This is necessary so that the building mixture covers the frame evenly and in sufficient quantity, and also so that it retains its shape during, or after it solidifies.

Types of fasteners for rebar and their characteristics

The main material for the production of clamps are various polymers, which are pressed on special machines under high pressure, thus obtaining special strength. It also significantly increases their already excellent resistance to temperature extremes and chemical reactions.

The two largest groups into which retainers are divided are vertical and horizontal:

• Retainers for vertical reinforcement.

Also called support clamps. They are made in the form of a rack of a certain shape with limiters on top. They are installed about a meter apart when installing the foundation or walls.

• Retainers for horizontal reinforcement.

Made in the form of a ring with characteristic elements for hooks inside. They are needed so that the reinforcement does not come into contact with the formwork during the construction of columns, walls and ceilings.

We will talk about a more detailed classification of fixators later.

How to choose protective layer fixators for rebar?

The protective layer during construction is formed as follows. The metal frame is tensile, while the concrete is compressive. In this case, both materials have almost the same temperature coefficient.

The building mixture, after solidification, forms an alkaline environment, which perfectly insulates steel from corrosion. However, this kind of unique chemical processes can be obtained only if a certain distance is observed. It is determined by the type of construction and its application, and as a rule it is approximately 1-4 centimeters.

In order to select the clamps necessary to provide the protective layer, you should carefully study the technological requirements for the construction. Among them:

• type of construction object (slab, column, wall, etc.);
• rebar diameter;
• volume of mortar;
• average temperature, humidity and their maximum differences at the construction site.

To determine the indicators in the last paragraph, one should study synoptic reports, as well as take data from moisture sensors specially placed at the facility.

The advantages of using retainers in this case are obvious:

• the durable material from which the elements are made guarantees their own safety;
• the ability to create an increased load on the frame while maintaining the geometry of the structure;
• universality and interchangeability of clamps, which allows you to choose the right fixative under any circumstances;
• simplicity and speed of use without the use of additional wire elements or welding work;
• Guaranteed to hold the concrete mesh at the right level until it dries;
• minimizing the deformation of the reinforcement, and hence increasing the durability of the building structure;
• Support the desired level of protective layer.

To choose a good fixative, you should carefully study its structure. The material from which it is made must be particularly durable. Feel free to bend them as hard as you can while checking the specifications of the product. Otherwise, you will receive a part of inadequate quality, which can create great inconvenience at any stage of construction. Reliable stores should have certificates of quality and compliance of goods with building standards.

Characteristics of the main types of rebar clamps

The market for rebar clamps is developing rapidly, and manufacturers are introducing more and more new models with different modifications. We will highlight the main ones among them.

• Asterisk.

Made to ensure the tightness of the space around the reinforcement and its retention. The asterisk gives a protective layer from 20 to 50 millimeters. You can use reinforcement with a diameter of up to 2 centimeters.

• Universal.

It is used in the construction of various kinds of monolithic building elements: columns, walls, ceilings. Universal retainers can support a protective layer of 1.5 centimeters.

• Rack.

A product of increased strength, which allows you to carry out construction work while being directly on the frame. The rack can fix reinforcement with a diameter of 5 millimeters to 2.5 centimeters.

• Stool.

Mostly used as a support for creating load-bearing structures such as foundations or overall slabs, so it can work even with very large reinforcement or double mesh. The high chair provides a protective layer of 5 centimeters.

• Deck

Designed to create poured floors where a stand is required for installation on a relatively soft surface. Thanks to the wide support, the flooring has excellent stability and provides a protective layer of up to 10 centimeters.

• Crown.

Clamps are used for horizontal installation of reinforcement: to create ceilings and floors. They can connect with each other. One crown gives three protective layers at 15, 20 and 25 and is used for steel bars up to 16 millimeters in diameter.

If the design is not too large and demanding in terms of performance, then you can make the clamps with your own hands. A plastic tube or box is suitable for this. The reinforcement is placed in the holes made in advance and poured with concrete.

Conclusion

The type of retainers is the main thing to look at when choosing them. The quality of materials is the second thing you should pay attention to. Some fasteners at first glance are more versatile than others, but do not forget that they were developed not only in terms of convenience, but also based on the conditions for the subsequent operation of the building structure. Therefore, check with the seller in advance why you need clamps, so that he will help you in choosing and pick up the right number of units of goods.

You can buy fixtures for fittings, other products, as well as rent construction equipment on the pioner.ua website. We guarantee full support on all technical issues and timely delivery of your goods and services.