ACRI and Australian Research Council (ARC) linkage project.

Higher speed heavy haul operations impart repeated loading on the natural soil formation that can then fluidise (known as mud pumping).  If the build-up of pore water pressure becomes excessive it can cause track failure.

This research address two major issues of concern to industry in this project. How do we identify the areas vulnerable to mud pumping across Australia?, and, once recognised: How do we improve this sub-grade soil with proper drainage and treatment so that we reduce the risk of mud pumping?

Examination of the factors surrounding mud pumping and the effectiveness of sub-surface drainage to prevent track instability, improve track longevity and reduce maintenance costs.