Life-cycle sustainability efficiency assessment and multi-criteria optimization of self-consolidating concrete based on interlayer bond performance
Materials Today Communications, cilt.57, 2026 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 57
- Basım Tarihi: 2026
- Doi Numarası: 10.1016/j.mtcomm.2026.116337
- Dergi Adı: Materials Today Communications
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Chemical Abstracts Core, Compendex, INSPEC
- Anahtar Kelimeler: Decision-support framework, Feasible design regions, Interlayer bond performance, Life-cycle sustainability assessment, Performance-based sustainability efficiency, Self-consolidating concrete
- Marmara Üniversitesi Adresli: Evet
Özet
Growing environmental concerns and increasing emphasis on economic sustainability have driven the concrete industry to develop design strategies capable of delivering enhanced engineering performance under practical service conditions. However, existing sustainability assessments generally evaluate environmental indicators independently of the engineering performance they support, while optimization studies commonly identify a single optimum mixture with limited practical flexibility. To address these limitations, this study proposes an integrated framework for life-cycle sustainability efficiency assessment and multi-criteria optimization of multilayer self-consolidating concrete (SCC) based on interlayer bond performance. A comprehensive experimental program was conducted using four supplementary cementitious materials (Class F fly ash, ultrafine Class F fly ash (UFAF), Class C fly ash, and ground granulated blast furnace slag) under different replacement levels, casting intervals, and curing ages. Direct shear and splitting tensile tests were integrated with cradle-to-gate life-cycle assessment to develop performance-based sustainability efficiency indicators relating interlayer bond performance to embodied energy, global warming potential, and material cost. Statistical predictive models were incorporated into a multi-criteria optimization framework based on feasible design regions rather than a single optimum solution. The proposed framework identifies the optimum supplementary cementitious material (SCM), critical casting delay time, acceptable mixture proportions, and sustainability efficiency under predefined mechanical, environmental, and economic constraints. Among the investigated binders, UFAF exhibited the most favorable balance between interlayer bond retention and sustainability efficiency, while the feasible design regions showed that optimum mixture selection depends strongly on SCM type and construction constraints. Overall, the proposed methodology directly links material selection, construction planning, and life-cycle sustainability, providing a rational basis for performance-oriented design of multilayer SCC under realistic field conditions.