Jet grouting is a widely used method for ground improvement and for sealing measures in geotechnical engineering. Due to the nature of the process, the material consumption of water-binder suspension is high. The objective of this research is to enable a more efficient use of resources by evaluating and reducing the waste of the resources used in the jet grouting process, taking lean principles into account. The objective of this paper is to develop a production flow model for the jet grouting process. This is to enable a continuous improvement of the production processes and a reduction of the associated material consumption through recycling. A production flow model is proposed to determine the amount of binder suspension required for production as a function of production time. The model presented will be used to control and continuously improve the production process and associated use of resources in future research. This will be done in accordance with the lean principles of customer value, value stream identification, flow, pull and striving for perfection.