采用较少的水泥(不大于165kg/m3) ,磨细粉煤灰掺量70%以上(等量取代) ,配制出高工作性(坍落度24cm) ,抗压强度80MPa以上的高性能混凝土。试验结果表明 :高性能复合磨细粉煤灰混凝土具有高流态、低坍落度损失、高弹模、低干缩、高耐久等特点。该混凝土在大型坡度(55)屋面板混凝土工程中成功应用。提出了该混凝土有关性能间关系的经验公式 ,可供工程推广应用、设计、质量控制等参考。 With less cement (not more than 165kg / m3), more than 70% of ground fly ash content (equivalent replacement), the preparation of high-performance (slump 24cm), compressive strength of more than 80MPa high performance concrete . The test results show that the high performance composite ground fine fly ash concrete has the characteristics of high flow regime, low slump loss, high elastic modulus, low shrinkage and high durability. The concrete has been successfully used in large grade (55) roofing concrete projects. The empirical formula of the relationship between the performance of the concrete is put forward, which can be used as a reference for project popularization and application, design and quality control.