Comparative Analysis of Traditional Prestressing Materials and Innovative Hybrid Epoxy–Cement Prestressing Materials Modified with Carbon Quantum Dots
Properties of Pre- and Post-Tensioned Hybrid Epoxy–Cement Concrete Members for Construction Applications, wiley, ss.25-33, 2026
- Yayın Türü: Kitapta Bölüm / Araştırma Kitabı
- Basım Tarihi: 2026
- Doi Numarası: 10.1002/9781394219384.ch2
- Yayınevi: wiley
- Sayfa Sayıları: ss.25-33
- Anahtar Kelimeler: advanced construction materials, carbon quantum dots (CQDS), corrosion resistance, fatigue endurance, hybrid epoxy–cement composites, nano-engineered composites, prestressing materials, self-sensing tendons, structural health monitoring, sustainable infrastructure
- İstanbul Üniversitesi-Cerrahpaşa Adresli: Evet
Özet
Prestressing technology has long relied on high-strength steel strands and bars, yet these conventional materials remain constrained by corrosion susceptibility, stress relaxation, and fatigue limitations. This chapter introduces a comparative framework between traditional steel tendons and an innovative hybrid epoxy–cement composite modified with carbon quantum dots (CQDs). The hybrid system integrates the toughness and adhesion of epoxy, the stiffness and thermal compatibility of cementitious fillers, and the multifunctional reinforcement of CQDs, producing a material that is simultaneously stronger, lighter, and self-sensing. Mechanical evaluations reveal tensile strengths exceeding 2200–2500 MPa, fracture toughness gains of up to 70%, and fatigue endurance surpassing 10 million cycles, while maintaining immunity to chloride corrosion and stress-corrosion cracking. Beyond mechanical superiority, the CQD-modified composite introduces real-time structural health monitoring through piezoresistive sensing, a capability absent in steel strands. Life-cycle analyses indicate that despite higher initial costs, service life extensions and reduced maintenance yield 25–40% economic savings over 50 years. The chapter concludes that CQD-hybrid composites represent a paradigm shift in prestressing technology, merging durability, sustainability, and intelligence, and positioning them as a viable successor to steel in next-generation resilient infrastructure.