Utilising Pareto efficiency and RSM to adjust binder content in clay stabilisation for Yttre Ringvägen, Malmö

In this paper, we present a new framework for improving soil strength using an advanced method of engineering statistics. The materials included clay till collected in Yttre Ringvägen, southern Sweden. Binders quicklime, slag and ordinary Portland cement used as pure binders blended mixtures. We first applied the Response Surface Methodology techniques aimed at binder blend optimisation: 1) Central Composite Design; 2) Box-Behnken 3) Simplex Lattice Design. Pareto charts were presented modelling responses from tests with different estimating their effects on strength. Finally, to examine variables important stabilisation, also evaluated effect amount interaction between cement/lime/slag ratios: 30-50-20 %; 50-50-0 100-0-0 % paper highlights major opportunities challenges statistics cross-cutting research direction issues civil engineering.