strength of concrete is more than 600 ksc or 60MPa. The superplasticizer uses to control the slump of the fresh concrete lower than 15 cm about 0.3 percent. All concretes are tested the compressive test at 7, 28, and 90 days by curing with water. The bottom ash that use to mix in concrete have to retain on sieve No.325 about 5 percent. The result will be analysed the best proportion of the bottom ash that replace to cement and reach the target (60MPa) and analyse for the highest ratio that replace to cement worthly.