It demonstrates that Formula 2 slurry can effectively keep the stability of pile shaft,which minishes the average filling coefficient to 1.
施工实践表明,2#配方泥浆能有效的保持桩孔稳定性,桩孔的平均充盈系数为1。
The application of bored piles with large-diameter and super-depth to complex stratum often costs more than expected because of large filling coefficient.
在复杂地层中施工超深大口径钻孔灌注桩时,常因充盈系数增大而使成本居高不下。
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