Work

Recycled Concrete Fines as a Component of Combined Stabilisation of Clayey Soils for Sustainable Road Construction

Year: 2025

Type: article

Abstract: This study investigates the application of recycled concrete fines (RCF) as a mineral modifier and hydrated lime as a traditional stabiliser of clayey soils used in road foundations. The incorporation of RCF was shown to reduce soil plasticity and improve the compactability of loam due to the skeletal effect of inert crystalline particles. Compressive strength tests confirmed the enhanced strength of the modified mixtures. The addition of lime promoted the formation of hydraulic products, providing further gains in soil strength and stability. A clear synergy was identified between the mechanical action of RCF and the chemical stabilisation by lime, which improves the reliability and long-term performance of clayey soils. The findings highlight the feasibility of this combined approach in road construction, consistent with the principles of the circular economy.

Source: Theory and Building Practice

DOI: 10.23939/jtbp2025.02.016

Authors: Nataliia Topylko, Volodymyr Bidos, Yurii Novytskyi, Nataliia Rainchuk

Institution: Lviv Polytechnic National University

Language: English

Topic: Geotechnical and construction materials studies

Subfield: Civil and Structural Engineering

Field: Engineering

Domain: Physical Sciences

SDGs: Industry, innovation and infrastructure, Responsible consumption and production, Sustainable cities and communities

Open Access status: bronze

Funders: Department for International Development, Agência Nacional de Inovação