Abstract: With the speeding up of urbanization process, high-rise and super high-rise buildings continue to spring up, concrete materials are innovating and developing constantly. To improve durability and strength grade of concrete, reduce production cost and environmental pollution, and save energy consumption, a mathematical model for predicting the influence of admixtures on concrete strength was established based on the double mixing technology of concrete and experimental research. The results show that the content of fly ash and mineral has an important impact on the strength of concrete. The mathematical model can be used to predict the influence of admixtures on strength of concrete, control the content of admixtures and ensure the strength of concrete. Under the premise of not affecting the performance of concrete, the use of admixtures should be maximized to replace cement, so as to effectively reduce the amount of cement.

Key words: double doping technology, mineral admixtures, concrete strength, design optimization