Advanced Fiber-Matrix Interface Research Program
Collaborative R&D initiative developing next-generation UHPC formulations with hybrid PVA-steel fiber systems. Achieved record 180 MPa compressive strength with enhanced post-cracking ductility for seismic-resilient structural applications.
Compressive Strength
180 MPa
Category
Lab R&D
Location
Wuhan, Hubei Province, China
Research Objectives
This laboratory program focused on optimizing the fiber-matrix interface through surface treatment protocols and nano-silica densification, targeting simultaneous improvements in compressive strength, tensile strain capacity, and long-term durability.
Methodology
- Characterization: SEM/EDS microstructural analysis, mercury intrusion porosimetry
- Mechanical Testing: Direct tension, four-point bending, and wedge-splitting fracture energy
- Durability: Accelerated carbonation, sulfate attack, and alkali-silica reaction screening
Key Findings
Hybrid fiber systems (2% steel + 0.5% PVA by volume) demonstrated synergistic toughening with fracture energy exceeding 3,000 J/m² at 160 MPa compressive strength.
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