Grouting at the bottom of a pile may considerably increase the bearing capacity, reduce settlement, and improve the property of pile-soil working together, hence its wide application in recent years in China. This paper, based on a specific case of construction, explains the mechanism of how grouting improves the bearing capacity, the technical parameters of grouting, quality guarantee measures and common problems in grouting. It is proved through test piles that grouting technology is not only effective, but also economical and simple, therefore it is a worthwhile technology to consider.
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