Grouting of rock and soil evolved over the past decades as a unique niche within the construction industry and gained very high technical standard regarding the grouting equipment, steering and even latest integration within the BIM system. Recent developments went along with the establishment of new grouting criteria, which predict grout spread in a jointed rock mass or within soil and new grouting methods and materials. One omitted problem with the steering of the grouting process is the control of jacking and fracturing of soil and rock mass. Research on the flow-pressure behaviour of the grouting process was undertaken to address the jacking and fracturing behaviour within various ground conditions. The analysis shows specific patterns to identify the fracturing process, independently from the actual magnitude of pressure and flow rate, by considering its derivations. The consideration of the derivations of the grouting parameters can be used to understand the process more in detail and to steer pumps effectively in the future.
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