粉煤灰掺量对混凝土绝热温升的影响

通过实验研究了不同粉煤灰掺量对混凝土绝热温升的影响.研究结果表明：在一定龄期之后,较高水胶比低强度等级混凝土的绝热温升随粉煤灰掺量的增加而下降,而较低水胶比高强度等级混凝土的绝热温升随粉煤灰掺量的增加而上升,但当粉煤灰掺量达到50%（质量分数）时,其绝热温升反而下降;粉煤灰掺量为0,20%,30%,60%时,等强度等级C30混凝土的绝热温升随粉煤灰掺量的增加而下降.

Influence of the Dosage of Fly Ash on the Adiabatic Temperature Rise of Concrete

The adiabatic temperature rise of concrete containing different dosage of fly ash was investigated.The results denote that for higher m_W/m_B and low strength concrete,the adiabatic temperature rise of concrete decreases with the increasing dosage of fly ash;for lower m_W/m_B and high strength concrete,the adiabatic temperature rise of concrete increases when the dosage of fly ash increases till 50% and then decreases.With the same strength grade C30,the adiabatic temperature rise decreases when the dosage of fly ash increases.