In the first chapter, Tania Pardo, Teresa Fresno, Vanessa Álvarez-López, and María Touceda-González review central aspects of phytostabilisation techniques for recovering trace elements contaminated soils. The possible future of phytotechnology is evaluated by reflecting on legislation, research evolution, and field implementation. In the second chapter, Essien Udo, Ph.D presents a study using laboratory investigations to discover problems linked to Coastal residual soils at plain and modified conditions, using the knowledge that residual soil parameters have a substantial effect on the overall performance or non-performance of sub-base and base course formations. Next, in the third chapter, Giovanni Santarato, Anna Albertini, Marco d'Attoli, Fabio Navi, Marco Occhi, Federico Fischanger, Gianfranco Morelli, Martino Leoni, Tiziana Apuani, Francesco Loddo, and Gaetano Ranieri present research on techniques of soil consolidation and stabilization by way of expanding resin injections. Supplementing this, V. Ortega-López, M. Skaf, and A. Santamaría discuss the way Ladle Furnace basic Slags might be used to stabilize natural clayey soils in the fourth chapter. In the fifth chapter, Lucile Saussaye, Lydia Leleyter, Didier Hennequin, Mohamed Boutouil, and Fabienne Baraud assess the effect of nitrate ions on the mechanical performances of soils treated with hydraulic binders, determining that treatment with hydraulic binders improves both the physical and mechanical characteristics of soils, thus permitting them to be used in a variety of geotechnical applications. Afterwards, Shuaishuai Wu, Zhengguo Gao, Shiyang Li, Wenbo Cui, and Xin Huang propose a confined stabilized soil pile as a possible new foundation treatment method in the sixth chapter. In the seventh chapter, Hao Yu, Xin Huang, Jianguo Ning, and Zhanguo Li present a study where three types of composite stabilizers with different AFt formation rates were used to stabilize two kinds of soils. In the eighth and final chapter, Jonathan Oti, PhD expresses findings that it is possible to stabilise clay soil with lime based systems incorporating WS or WTRG for use as improved filling material in road building and other applications.