• These refractories are applied with different methods compared to other concretes due to the low cement ratios they contain. Vibration is required for the applications of these materials. They are materials with low porosity and high strength.
• In cases where less than the packaging amount is used, the entire packaging should be mixed openly and the desired amount should be separated to ensure homogeneous distribution (to prevent segregation). Material should not be taken partially from the top of the package.
• A paddle or standard cement mixer should be used for the mixing process. This equipment must be clean before the mixing process.
• It is checked whether the materials and equipment to be used are clean.
• Total mixing time should not exceed 4 minutes.
• The water to be used in the mixture must be clean, of drinking water quality, and between 10-20°C.
• The recommended water amount for the mixture is between 4% - 6%. The mixture should be prepared in the appropriate consistency using the correct amount of water.
• Although the mixing time varies from material to material, it can be taken as 3-4 minutes.
• After the mixing time is completed, the ready mortar is poured onto the application area (from a height of maximum 1 meter); since vibration is important in low-cement concretes, vibration is applied to every area to ensure that the concrete spreads to difficult zones. While the vibrator is being removed from the concrete, it should be removed slowly so as not to form an air gap. You can get the best result by using a vibration table.
• If air particles come out in the mold while vibration is being applied, the process should be stopped. Total vibration time should not exceed 5 minutes. Exceeding this period causes the degradation of the grain distribution homogeneity.
• Hardening starts minimum 4 hours after the mixing process is completed, depending on the ambient temperature, and the setting time ends between 48 - 72 hours. The mold should be removed after the setting period is completed. The subsequent hardening process of the concrete occurs with air.
• Afterwards, the refractory material is subjected to the heat curing program.
• When necessary, special additives can be used for rapid setting. It should be known that these additives reduce the strength of catalog values by 5% - 10%.
• The temperature must never be raised above 50°C.
• Direct flame contact with the surface should be prevented until the operating temperature is reached.
• In case of any mishap during concrete pouring, technical support should be obtained from authorized persons.