Study on rising height of grout along a pile after
grouting and effect of grout on soils |
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| Authors: | HUANG Sheng-gen |
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| Institution: | Faculty of Engineering, China University of Geosciences, Wuhan 430074, China |
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| Abstract: | Grout rising along a pile is a general phenomenon in the process of post-grouting. The grout flew upward along the weak layer under pressure, squeezing the soil to a larger diameter and improving the shaft friction. By analyzing the mechanism of post grouting and applying the Bingham constitutive model and flowing equation, the formula to calculate the grout rising height was given. The formula to calculate radial displacement of soils around a pile was given by applying cavity-expanding theory. Compared with the measured results of a project, the calculated values were satisfactory relatively. |
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| Keywords: | bored pile post-grouting grout rising height expanding |
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