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

Per Lindh; Polina Lemenkova

doi:10.14311/AP.2023.63.0140

Authors

Per Lindh Swedish Transport Administration, Department of Investments Technology and Environment, Neptunigatan 52, Box 366, SE-201-23 Malmö, Sweden; Lund University, Lunds Tekniska Högskola LTH (Faculty of Engineering), Department of Building and Environmental Technology, Division of Building Materials, Box 118, SE-221-00, Lund, Sweden https://orcid.org/0000-0002-0577-9936
Polina Lemenkova Université Libre de Bruxelles (ULB), École polytechnique de Bruxelles (Brussels Faculty of Engineering), Laboratory of Image Synthesis and Analysis (LISA), Campus de Solbosch, ULB – LISA CP165/57, Avenue Franklin D. Roosevelt 50, B-1050 Brussels, Belgium

DOI:

https://doi.org/10.14311/AP.2023.63.0140

Keywords:

soil stabilisation, simplex experimental design, binder, OPC, statistical analysis

Abstract

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

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