二灰砂砾振动压实参数

通过振动压实试验,分析了振动频率、激振力、静面压力等参数对二灰砂砾压实效果的影响;在确定的最佳振动配置条件下,研究了振动时间、含水质量分数对振动压实效果的影响。通过对比测试静力压实与振动压实方法成型的二灰砂砾试件强度,发现振动法成型的二灰砂砾结合料质量分数不宜超过15%,否则会出现明显的流浆现象,并且早期强度衰减较大,最大干密度也随之降低;但是,二灰砂砾后期强度有明显提高,表明振动法能够用于成型二灰砂砾骨架密实结构。

Vibrating-compaction parameters of lime-fly-ash sand-gravel

Through the vibrating-compaction test,the influence of vibrating frequency,vibrating force,and still pressure on the compaction results of lime-fly-ash sand-gravel was analyzed.Under the optimum vibrating condition,the effect of vibrating time and the water content in the lime-fly-ash sand-gravel on the compaction results was studied.The strengths of the test piece made by still-compaction and vibrating-compaction were measured.It was found that the mass content of lime-fly-ash in the vibrating compaction sand-gravel should not be over 15%;the initial strength of the vibrating-compaction sand-gravel decreases greatly with time;its max dry-density also decreases with time;but its later strength increases greatly.The results show that the vibrating compaction can be used to compact the lime-fly-ash sand-gravel.10 tabs,5 figs,8 refs.