石灰粉煤灰混合料无侧限抗压强度试验研究

A Study of Unconfined Compressive Strength Experiment of Lime-flyash Mixture

对石灰粉煤灰混合料在不同产地、不同配合比例、不同养护条件及不同养生阶段进行了无侧限抗压强度试验。依据大量的试验数据,对比不同试验条件下的抗压强度,得出石灰粉煤灰混合料无侧限抗压强度与石灰含量、石灰和粉煤灰技术指标、养生时间、养生温度以及65°C快速饱水法有关。特别是65°C快速饱水法抗压强度约是标准养生条件下7 d无侧限抗压强度的2.5倍。

A series of unconfined compressive strength tests of lime-flyash mixture are made under different conditions such as different producing areas,mix proportions,maintenance conditions and preserving stages.According to a large amount of experimental data and a comparison of unconfined compressive strength under different experimental conditions,the strength of lime-flyash mixture is related with these elements including lime content,lime & flyash technology index,preserving time and temperature,and the water saturating method when 65 ℃.Especially,the strength by the water saturating method when 65 ℃ will be 2.5 times more than the 7 d unconfined compressive strength under standard perserving condition.