Recent Norwegian research on stabilisation of soft clays with the Dry Deep Mixing method

Abstract

Recent research in Norway focuses on understanding the strength and deformation characteristics of soft soils stabilised with the dry deep mixing method, aiming for more sustainable design and practice. The present paper summarizes the carried-out work and important findings obtained during the last 10 years of research in this topic. Experience with reducing the content of traditional binders, such as cement and quicklime, to less than 80 kg/m3 is presented. The performance of industrial by-products and biochar to replace traditional binders is discussed. Innovative monitoring solutions including fibre optic sensing and geophysics are described. Recent efforts in developing new binders are reported. The paper concludes with the application of data mining techniques to soil stabilisation and provides guidance on upscaling laboratory results to field scale.