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https://healthnbeautyfacts.com/cogniflex/

Cogniflex Strength concrete which not add silicon power often have a slight increase. In the case of no superplasticizer may be delayed, especially in case of high content of silicon power. When add silicon Cogniflex power to improve strength, depending on the variety of additives have different effects on setting time, some shortening 1to 2h, and some did not increase ..

http://healthnbeautyfacts.com/cogniflex/