Feasibility of Using Recycled Construction and Demolition Materials for Deep Soil Mixing

Ecem Nur Barisoglu (), Jannes Meeusen, Diederik Snoeck, Ramiro Daniel Verástegui-Flores and Gemmina Di Emidio
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Ecem Nur Barisoglu: Energy and Materials in Infrastructure and Buildings (EMIB) Research Group, Faculty of Applied Engineering, University of Antwerp, Groenenborgerlaan 171, 2020 Antwerp, Belgium
Jannes Meeusen: Laboratory of Geotechnics, Department of Civil Engineering, Ghent University, 9052 Gent, Belgium
Diederik Snoeck: SLW Foundations, Waalstraat 230, 9870 Zulte, Belgium
Ramiro Daniel Verástegui-Flores: MOW Geotechniek, Technologiepark 905, 9052 Zwijnaarde, Belgium
Gemmina Di Emidio: Laboratory of Geotechnics, Department of Civil Engineering, Ghent University, 9052 Gent, Belgium

Sustainability, 2023, vol. 15, issue 6, 1-13

Abstract: Reusing construction and demolition wastes for geotechnical and geo-environmental purposes has already become a research hotspot. This study was carried out to evaluate the feasibility of using recycled construction and demolition wastes in a partial substitution of cement to enhance the mechanical properties of soft soil. The strength and stiffness development of two types of recycled material (RM1 and RM2), incorporated with peat and clayey soil under 7, 14, and 28 days’ curing time, was investigated based on unconfined compressive strength and free–free resonance frequency test methods. The findings demonstrated that clayey soil showed an average of 2.5 times higher strength than peat with the addition of recycled materials, regardless of the type. However, after 14 days of curing, the strength remained constant for peat soil. Moreover, it is concluded that the studied granular recycled materials could be used to replace a part of the cement content to improve the strength and stiffness properties.

Keywords: construction and demolition materials; recycling; stiffness; resonant frequency; unconfined compressive strength; cement-treated soft soil (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2023
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