Concrete Superplasticizers-Capconorm SPN265

CapcoNorm SPN265 is a superplasticizer, strong water reducer, and retarder used to significantly increase the flowability of concrete/mortar without changing the water-to-cement ratio or reducing flowability.

This product is manufactured according to the general requirements of the Iranian National Standard No.293-1, as well as the performance specifications outlined in Tables 1-11 and 2-11 of the Iranian National Standard No.2930-2. Additionally, this additive complies with Grade G requirements of ASTM C494 standard and Table 1 of EN 934-1 standard, as well as the specifications of Tables 1-11 and 2-11 of EN 934-2 standard.

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The advantages of using a concrete superplasticizer include:
The use of concrete superplasticizers:
Range and Method of Using Additives in Concrete:

Permissible Range for Using Additives in Concrete:

The permissible range for the use of CapcoNorm SPN265 is from 0.5% to 1.5% by weight of cementitious materials (500 to 1500 grams per hundred kilograms of cementitious materials including cement, silica fume, slag, fly ash, and other similar pozzolans). The optimum dosage of the additive should be determined based on the mixture design specifications and the prevailing construction and weather conditions. Exceeding the declared limit may lead to consequences such as segregation and water bleeding.

How to Mix Concrete Superplasticizer:

To use the additive, it is necessary to dilute it with water in double the volume of the additive. Then, add it to the concrete when it has reached a low initial slump. Additionally, the following points should be observed:

  • After adding the additive, the concrete should be thoroughly mixed for 2 to 5 minutes to ensure complete blending, and uniform distribution of the additive in the concrete.
  • This additive should not come into direct contact with dry cement or dry aggregate materials.
  • The volume of water used to dilute the additive (before adding it to the concrete) should be subtracted from the total mixing water in the concrete.
Physical and Chemical Specifications of Concrete superplasticizer (CapcoNorm SPN265):
Safety Precautions When Using Concrete Plasticizer: