The need for concrete composition for construction works is determined by a set of excellent physical and technical characteristics. Previously, the use of conventional cement-based mixtures was hampered by the long period of their solidification (solidification). Manufacturers have successfully coped with this by developing fast-setting cements with a short hydration time. By replacing the usual construction Portland cement with BTC, construction can be carried out much faster.
Composite components
Companies produce this type of material according to individual production recipes, hiding the details of the composition. However, the basic consistency includes standard components. The following additives provide a set of properties inherent in varieties of fast-setting powder::
- quicklime;
- potassium carbonate;
- hydrochloric acid;
- various salts.
Based on their percentage ratio, the speed of solidification and gaining the highest strength can vary, but the process still proceeds as quickly as possible. Also, the production does not exclude the use of various mineral additives and other components( not of mineral origin) to increase plasticity, ensure waterproofing ability, chemical resistance and other quality indicators.
Manufacturing methods
Today, fast-setting cement powders are sold in two types. For the former, the production technology involves adding components that can accelerate setting and hardening for sale. Other cement mortars are mixed directly during construction and repair procedures. It is supposed to add special liquids to the delivery package of this type of powder.
Areas of operation
Most often, quickly drying powder is used when it is necessary to restore any structure. In buildings and structures, such building materials are necessary for waterproofing, putty, sealing various defective surface areas, and repairing foundations and plinths.
Modern (new) approaches to architecture suggest that such concrete can be poured under anchors, metal structures and other details, as well as used in stonework, stucco molding and column installation.
Brand identity
In the domestic market, there are two main brand varieties of powder-M400 and M500. Each of these brands allows you to perform the above procedures. They differ only in the level of load withstood (the highest in comparison with powders of a smaller brand accessory). With specialized types of construction activities, much attention is paid to the 500th number.
Key Features
As already mentioned, the key advantage of such powders is their instant solidification. If in the basic varieties it takes at least an hour for the initial setting, then quickly solidifying takes from 1 to 5 minutes. Moreover, under such conditions, concrete consistencies are self-compacting, filling cracks and holes. Accordingly, the integrity of any overlap can be restored as soon as possible. These are also powders that are used at high humidity and low temperatures.
Nuances of operation
In fact, the preparation of a working consistency is no different from the standard one. Also, clinker grinding is mixed with water, sand and solid fillers (if necessary). But in this case, it is necessary to remember about the active components that cause setting within 1-5 minutes. Accordingly, the prepared mass should be spent within the specified time. Having distributed it in a timely manner over the treated area, they get a high-quality coating.
You can not dilute the setting building material: it will lose its qualities. Carefully monitor the content of components in the prepared concrete mass, using the manufacturer’s instructions. Consciously prepare the surface to be treated by cleaning it. Add the liquid to the mixture evenly and slowly, using a construction mixer at low speed to prepare the optimal consistency.