Graffa 23

Everything about concrete: brands, ratios, coefficients

Almost no modern production of reinforced concrete, cement or concrete is complete without the use of special additives that significantly improve the quality and characteristics of the concrete mixture and regulate the processes of cement setting and hardening. 

It would seem, what are these additives for, if commercial concrete is made on modern equipment, and during its production all the norms and requirements for time and thoroughness of mixing were not violated, the composition of concrete was observed, high-quality fillers were used in concrete: cement, sand, crushed stone, water? Good concrete is good in itself, but if there is an opportunity to make it better: to increase its strength, make it more mobile, increase its moisture resistance, frost resistance, crack resistance, protection from salts, oil products and so on, why not do it ?

Modern production of concrete, reinforced concrete products and cement takes into account all the possibilities and nuances that make it possible to make reinforced concrete, cement or concrete “faster, higher, stronger.” Here, special additives for concrete such as sodium gluconate Malaysia come to the aid of precast concrete factories and various concrete plants, affecting the behavior of cement at various stages of setting and hardening, and affecting the quality characteristics of the manufactured reinforced concrete, or, monolithic reinforced concrete structure, throughout the entire period of operation.

The main types of additives for concrete and cement that are used in modern production can be roughly divided into the following groups:

Concrete additives that regulate the basic properties of the concrete mix, such as mobility, plasticity, water retention, pore formation, etc. Additives regulating the preservation, which are responsible for the rate of concrete hardening, the setting rate of cement, mainly affecting the hydration process at the initial stage of setting, hardening and concrete curing.

Additives for imparting special properties to reinforced concrete or reinforced concrete: polymeric, biocidal, etc. Antifreeze additives for concrete, allowing concreting at sub-zero temperatures. Additives for concrete that increase its strength, frost resistance, corrosion resistance. Corrosion inhibitors of steel, because steel reinforcement, which is part of any reinforced concrete products or monolithic reinforced concrete, is subject to the destructive effects of aggressive environments in which many reinforced concrete structures have to work. Expanding additives in cement, reducing shrinkage, increasing crack resistance, creating self-stressing reinforced concrete and monolithic reinforced concrete structures. 

Coloring additives – pigments for concrete

Concrete admixtures for waterproofing, which include various colmatising additives, water repellents and other means that reduce the permeability of concrete. Various porous additives for lightweight concrete: gas-forming, air-carrying, foaming, etc. 

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Gwendolyn Carter

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