| 摘要 |
Disclosed herein is a method for producing a cement additive using bottom ash of a thermoelectric power plant comprising the steps of: cooling bottom ash of a boiler of a thermoelectric power plant with air without a cooling treatment with sea water; pulverizing the cooled bottom ash; screening the pulverized bottom ash to obtain a particle size fraction of 50 mesh or less by particle size classification; grinding the screened bottom ash by means of a ball mill to produce bottom ash powder; and mixing the bottom ash powder with portland cement in a mixing ratio of 5 to 25 wt%. According to the present invention, it is possible to emerge from the conventional method comprising drying of bottom ash of thermoelectric power plants and reclamation under sea water and to utilize the bottom ash as a cement additive to produce cement with improved long-term strength, low hydration heat and chemical resistance. |
