Study on Indoor Vibration Compaction Parameters of Loess Subgrade Filling
In order to better control the compaction quality of loess filling subgrade,the influence of vi-bration parameters of indoor vibration compaction instrument on the dry density of plain loess and cement im-proved loess subgrade fillings was studied,and the optimal vibration time,vibration frequency and vibration amplitude of the two subgrade fillings were determined.The results show that with the increase of vibration time and frequency,the dry density of the two loess subgrade fillers increases rapidly and then tends to be stable.The optimum vibration time of plain loess and cement improved loess is 90 s and 80 s respectively,and the optimum vibration frequency is 30 Hz and 28 Hz respectively.With the increase of vibration amplitude,the dry densi-ty of the two fillers increases first and then decreases.When the vibration amplitude is 1 mm,the dry densi-ty of the two fillers is the largest.
万方数据
维普
