Aydos Chemical Concrete Admixture; are organic and inorganic chemical substances added to concretes in very low amounts other than water, cement, and aggregate. The chemical admixtures are less than 5% of the weight of the fastener. It is designed to improve the performance of the concrete by changing its fresh and/or hardened properties and/or to make the concrete more economical.

The concrete admixtures used for increasing the workability of fresh concrete, changing the settling time, increasing the strength and durability of hardened concrete are applied either by adding to the concrete mixture water or by mixing directly with the newly prepared low-slump fresh concrete.

The use of chemical admixtures is not a prerequisite for the production of concrete but rather the opposite, it provides convenience. The quality of chemical admixtures is increasing day by day and the usage areas are expanding.

It is impossible to improve a defective concrete that is not produced according to rules by using a chemical admixture. Admixtures may not give positive results for each cement, each aggregate type and granulometry. The amount of admixture may necessitate to be increased or decreased. The usage rates of chemical admixtures may vary according to aggregate properties, concrete class, water/cement ratio and ambient temperature. In this respect, the compatibility of admixtures with other materials should be determined by pre-tests done in laboratories.

In addition to the main functions of admixtures, there are always secondary effects. A feature may be corrupted while another feature is being corrected. In some cases more than one admixture may be required to be used. Their compatibility with each other and that they do not interfere with each other's effects must be proven by making preliminary test mixtures.

Chemical Concrete Admixture Types

Chemical Concrete Admixture Types According to TS EN 934-2

• Water reducing/plasticizing chemical admixtures Ç: 2
• High-level water reducing/ super-plasticizing chemical admixtures Ç: 3,1 and Ç: 3,2
• Water-retaining chemical admixtures Ç: 4
• Air-entraining chemical admixtures Ç: 5
• Set accelerator chemical admixtures Ç: 6
• Hardening accelerator chemical admixtures Ç: 7
• Set retardant chemical admixtures Ç: 8
• Waterproofing chemical admixtures Ç: 9
• Set retardant/water reducing plasticizer chemical admixtures Ç: 10
• Set retardant/high-water reducing/ super-plasticizing chemical admixtures Ç: 11,1 and Ç:11,2
• Set accelerator/water reducer/plasticizer chemical admixtures Ç: 12
• Viscosity improving chemical admixtures Ç: 13

Concrete By-Products

Non-Standard Out of Scope Concrete By-Products

• Stabilizer Products
• Surface Retardant Products
• Corrosion Reduction Products
• Concrete Removing Products