Compensation grouting in sand, experiments, field experiences and mechanisms

Bezuijen, A. (2010). Compensation grouting in sand: Experiments, field experiences and mechanisms. TU Delft, Delft University of Technology.

Compensation grouting was developed to compensate for settlement during underground construction. Tubes are installed prior to the underground construction work together with a monitoring system. Injection of grout into the soil at various locations between the underground construction work and the foundations of the building leads locally to heave that compensates the settlement. This book reports on experimental research in sand about how the grout bodies made during injection depend on the grout properties, the density of the sand and the way the tubes are installed. The shape of the grout body affects the injection pressure and whether heave is localised to one injection point or distributed over a wider area. The evaluation of field measurements shows the influence of soil disturbance.