MODIFICATION OF SOIL SUBGRADE WITH RECYCLED CONCRETE FINES FOR REDUCED ENVIRONMENTAL IMPACT

Ukraine’s transition towards an energy-efficient economy, in the context of integration into the European area, represents a complex yet highly significant challenge. The post-war recovery of the country requires comprehensive modernisation of infrastructure in line with the principles of sustainable development and the standards of the European Union. Particular attention is drawn to the road construction sector, one of the most resource-intensive branches of the construction industry. Its development must be fully aligned with the goals of the European Green Deal, which encompass the reduction of greenhouse gas emissions related to the extraction and processing of natural resources, the implementation of circular economy principles, the promotion of economic growth through the increased use of anthropogenic waste as an alternative to primary raw materials, the mitigation of environmental impact, and the active deployment of environmentally driven technologies (Natsionalna ekonomichna stratehiia, 2021). As a result of the full-scale war in Ukraine, substantial volumes of mineral waste have accumulated from destroyed buildings and infrastructure, posing a serious challenge to the national resource management system. The efficient recycling of concrete debris is a key condition for reducing the environmental burden on the natural environment. This article presents research findings on the stabilisation of clayey soil using mineral fines derived from processed waste concrete, with the aim of improving the physico-mechanical properties of the subgrade in road construction.