“…Additionally, many non-traditional stabilizing compounds have a proprietary chemical composition, which makes it difficult to evaluate the chemical stabilizing mechanisms that may occur for a given soil type, and which also consequently makes it difficult to predict their performance for use as a soil stabilizer in practice. In recent years, a number of researchers have reported on engineering property improvement of soils stabilized with non-traditional calcium-based additives (e.g., Horpibulsuk et al, 2012Horpibulsuk et al, , 2013Hossain and Mol, 2011;Kampala and Horpibulsuk, 2013;Latifi et al, 2016aLatifi et al, , 2016cMarto et al, 2014;Peethamparan et al, 2008;Sukmak et al, 2013;Turkoz et al, 2014;Phetchuay et al, 2016 andPhummiphan et al, 2015). Little information is readily available on the corresponding mineralogical, morphological, molecular and microfabric characteristics of high swelling and non-swelling low strength clays that are stabilized with non-traditional additives; this information is essential for understanding the chemical stabilization mechanisms that are involved with non-traditional additives (Tingle et al, 2007).…”