Circulating fluidized bed combustion ash (CFBC ash) is the waste of coal-fired circulating fluidized bed power plant boiler. CFBC ash contains amounts of free lime and anhydrite, which has a self-hardening and expansion property. This paper studies the influence of CFBC ash fineness and lime or slaked lime dosage on the physical properties, strength and phase evolution of binary cementitious materials (lime or slaked lime-CFBC ash). The experimental results show that when lime or slaked lime dosage is below 30%, through CFBC ash getting finer, setting time of binary cementitious materials becomes shorter and compressive strength of that increases, but water requirement of normal consistency of that decreases to some extent. And when CFBC ash fineness is constant, with the increment of lime dosage, setting time of binary cementitious materials becomes shorter and water requirement of normal consistency of that increases, but compressive strength of that declines first and then increases. But when CFBC ash fineness is constant, with the increment of slaked lime dosage, setting time of binary cementitious materials becomes longer and compressive strength of that declines, but water requirement of normal consistency of that increases.

循环流化床燃烧灰（CFBC灰）是燃煤循环流化床电站锅炉的废物。CFBC灰包含大量的游离石灰和硬石膏，具有自硬化和膨胀特性。本文研究了CFBC灰分细度和石灰或熟石灰的用量对二元胶凝材料（石灰或熟石灰-CFBC灰）的物理性能，强度和相变的影响。实验结果表明，当石灰或熟石灰用量低于30％时，通过CFBC灰变得更细，二元胶凝材料的凝结时间变短，其抗压强度增加，但正常稠度的需水量有所降低。当CFBC灰分恒定时，随着石灰用量的增加，二元胶凝材料的凝结时间变短，其正常稠度的需水量增加，但其抗压强度先下降然后上升。但是，当CFBC灰分细度恒定时，随着熟石灰用量的增加，二元胶凝材料的凝结时间变长，其抗压强度下降，但正常稠度的需水量却增加。