The influence of fly ash loss on ignition on some materials properties of fly ash blended cement paste would be discussed. LOI was changed continuously by 8%, 15% and 20%. The results when cement versus HFA was 0.2 by mass, and LOI content was 20%, the all characteristics showed the poorest results which strength, max dry shrinkage and expansion strain were 2MPa, 1052 and 708×10-6(mm/mm).%探讨了粉煤灰的烧失量对水泥复合粉煤灰浆体的力学和耐久性能的影响.当水泥粉煤灰质量比为0.2且所选用的粉煤灰烧失量为20%时,各项性能表现出最差的结果,分别是为7d抗压强度仅为2 MPa,28d强度也仅为3.92 MPa;最大干缩和膨胀应变为1 052×10-6和708×10-6;各龄期内粉煤灰的水化程度也相当低.
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