Acta Scientiarum Polonorum

In the paper of 2015 by Krasiński the analysis and described the mechanism of pressure grouting action under
the base of bored pile were presented. The considerations were supported by static load tests on instrumented
bored piles of large diameter. The conclusion was that the grouting primarily activates and increases the pile
shaft resistance and thanks to it improves the characteristics of bored pile interaction with soil. As a continuation
of previous paper, the calculation method for prediction of load-settlement characteristic of bored pile
with base grouting was proposed by the author in presented paper. In the calculation procedure the load transfer
functions were applied and tested on two calculation examples. The computations, which can be carried
out by using a spreadsheet like Excel give good results, which well reflect the real advantages of grounting
under the base of bored pile.