The use of fine portions from construction and demolition waste for expansive soil stabilization: A review Mgboawaji Claude UJILE a* , Samuel Jonah ABBEY b a Civil Engineering, Faculty of Environment and Technology, University of the West of England, Bristol BS16 1QY, UK b Geotechnical Engineering, Faculty of Environment and Technology, University of the West of England, Bristol BS16 1QY, UK * Corresponding author. E-mails: Mgboawaji2.Ujile@live.uwe.ac.uk; ujilemgboawaji@gmail.com © The Author(s) 2022. This article is published with open access at link.springer.com and journal.hep.com.cn ABSTRACT Construction and demolition waste (CDW) are the largest waste products in the world today and competes as a viable recycled additive material in place of natural aggregates. Due to the increase in compressive strength of different mix proportions of CDW, it is also considered for reuse in concrete and subbase construction. This study shows the effect of CDW in expansive soil stabilization. The chemical and mechanical properties of these materials have shown that they are capable of developing compressive strength properties for replacement of cement with significant reduction in carbon emission. The inherent compositional properties of recycled CDW compared in this review suggests that CDW have good filler properties in highly expansive soils. Mixtures of crushed brick and recycled aggregates characterised based on chemical properties of different replacement ratios suggests that CDW of good-quality aggregates reduces swell potential of expansive soils and increased mechanical strength in pavement construction. KEYWORDS mixed fine portions, construction and demolition waste, expansive soil, soil stabilization   1 Introduction Massive urbanisation has boosted up infinite construction activities especially in developed countries and has consistently increased economic and environmental impacts on urban sustainability and environmental safety. One of the many issues encountered in the environment from mass urbanisation is increased landfills caused by materials from building refurbishments. Reducing land- fills reduces carbon emissions to the environment and also encourages innovation and sustainability of the environment. Sustainability is achieved by recycling construction and demolition waste (CDW) materials for alternative concrete production and expansive soil stabilization, by enabling materials to have sufficient inherent mechanical properties to make up for minera- logical and chemical compositions that makes soils and concrete works achieve mechanical strength for sustena- nce of structures. Expansive soils are categorized as soils that require re- engineering as a result of deformation caused by swelling and shrinkage. Some categories of expansive soils can be highly plastic and cause premature pavement failures during and after saturation, causing low soil bearing capacity before and after saturation [1]. During moisture variation of a saturated soil the shrinking and swelling of the soil leads to reduction in density and strength of its over laying structures. These phenomena cause shearing and deflections within the soil for the overlying layers of pavements and structures; and accelerates deterioration of structural quality capable of maintaining mechanical strength. The effect of deterioration develops from cracks on surfaces and low soil bearing capacity which causes high cost of construction remediation. In order to remedy the above mentioned common expansive soil defects, several techniques have been used to achieve mechanical strength. For instance, cement in manageable proportions with other cementitious materials such as ground granulated furnace blast slag (GGBS), lime, fly ash, silica fume and other cementitious Article history: Received Oct 16, 2021; Accepted Mar 3, 2022 Front. Struct. Civ. Eng. https://doi.org/10.1007/s11709-022-0835-z INVITED REVIEW