Concrete is a building mixture that ensures durability, reliability, and resistance of the finished structure to influences of any nature. The growing requirements for building materials have led to the need to improve their properties. Special additives for concrete improve the characteristics of mortar and ready-mixed concrete, accelerate the pace of construction, and reduce the consumption of materials and energy resources. The question of what categories of additives exist is detailed below.
The admixtures used here, such as air entertainers, stabilizers and thinners, have been specially developed for concrete. For example, they have the effect of making the concrete matrix resistant to frost and de-icing salts, to increase the sliding effect in fresh concrete, to improve implementation and to reduce bleeding without having an influence on the air content, and in general, they make it possible to obtain a very stable system. Polycarboxylate-based plasticizers are superplasticizers which allow a strong reduction in water while allowing very good maintenance of workability. All products can be combined at will.
What are they used for?
The use of concrete additives malaysia is a simple, affordable and effective way to improve the quality of concrete solutions. Their use is important today, as are the main components.
Concrete admixtures are intended for:
- Achieving high performance properties of cement stone;
- Acceleration or retardation of hardening;
- Improved waterproofing;
- Increasing resistance to temperature extremes and frost;
- Elimination of the need for dosed solution supply;
- Obtaining concrete with specified characteristics.
Their quantities for a particular mixture are selected under experimental conditions using skytrade technology.
Types of concrete admixtures
There are two types of concrete additives: liquid, powder. Mostly they affect the specific properties of the fresh mortar – workability, the beginning of hardening. Additives to concrete must be added either to the mixing water or to the finished mixture.
There is a separate type of specific additives – air entraining, foaming. For example, adding kalmatron d to concrete. This type of modifiers has a complex effect. It is added to improve several parameters at the same time. The concrete additive significantly reduces costs, avoiding the incompatibility of several individual additives.
Concrete additives for curing
One of the types of additives with complex action are accelerators of strength gain or concrete hardeners. They are endowed with the qualities of both superplasticizers and hardening accelerators. They include organic and inorganic compounds without alkalis. Accelerators have a wide field of use in construction, industry, road and transport sectors when obtaining a commercial product or an area where shotcrete is needed.
Back to the table of contents
There are several target categories of chemical additives mixed into concreting mortar. They are classified according to their effect.
- Concrete modifiers of mix mobility and plasticity.
- Substances to reduce moisture evaporation from the solution.
- Waterproofing additives.
- Concrete stabilizers for the separation of sand-cement mass.
- Set retarders.
- Antifreeze additives.
- Foaming and blowing agents.
- Protective connections.
- Air-entraining connections.
Concrete additives that improve resistance to corrosion, the effects of living organics (mold, fungi).
A chemical can affect several properties, but only one will appear. The principle of action of additives is similar to the action of surfactants and can form a material with a spatial structure. This category includes additives based on nitrite compounds. Such chemistry is very dangerous, so you need to work with it carefully, guided by the instructions of the skytrade.