Table A1

Operational definitions and LSCM implications of circular strategies

R-imperativeR-strategyDefinition and logistical scopeLSCM implication
Smarter useRefuse (R0)Avoiding unnecessary products or materials and their associated flows by abandoning functions or switching to non-material solutionsRequires upstream avoidance of non-essential flows and strategic procurement choices to prevent waste at the source
Rethink (R1)Making product use more intensive, often through sharing platforms or multi-functional designNecessitates demand-management to optimise the connection between supply and demand via service-based models
Reduce (R2)Using fewer resources and generating less waste per unit of output through increased efficiencyFocuses on preventing systemic leakage through spoilage reduction, fewer handling steps, and optimised execution
Lifespan expansionReuse (R3)Using a discarded but functional product again for its original purposeDepends on functioning return/collection loops, eligibility checks, and condition verification to enable multiple cycles
Repair (R4)Fixing faults in a broken product so it can be utilised with its original functionRequires diagnostic triage and routing to repair centres supported by parts and service logistics
Refurbish (R5)Restoring an old product and bringing it up to date through extensive reconditioningInvolves grading, quality assurance, and controlled reintegration into appropriate secondary market channels
Remanufacture (R6)Rebuilding a product to ‘as new’ condition using recovered cores and new partsRequires core acquisition, disassembly, testing, and certification within a robust reverse network design
Repurpose (R7)Using a discarded product or its components for a function different from the originalNecessitates cross-actor coordination and matching criteria to align residual value with new alternative functions
Material applicationRecycle (R8)Processing materials to obtain secondary raw materials of high- or low-grade qualityRequires collection consolidation at scale, strict contamination control, and high material purity to ensure economic viability
Recover (R9)Incinerating materials with energy recovery when higher value retention is not feasibleFocuses on compliant routing and documentation for residual streams to ensure safe, regulated final processing
Source(s): Adapted from Batista et al. (2018), Carlos and de Mattos (2025), de Lima and Seuring (2023), Jegen et al. (2025), Mostafayi Darmian et al. (2026), Potting et al. (2017) 

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