Abstract
A new ultra-high-performance hybrid fiber-reinforced cementbased composite (UHP-HFRCC) was developed in this study. The UHP-HFRCC exhibited a tensile strength of 20.1 MPa (2.9 ksi), a strain capacity of 1.06%, and energy-absorption capacity of 153 kJ/m3 (1356 lb-ft/ft3). The multi-scale fiber-reinforcement system employed herein effectively improves the mechanical properties of the UHP-HFRCCs under tension. Determining the appropriate volume fraction of the longer fibers is crucial for enhancing a variety of mechanical properties, including the tensile strength, strain capacity, and energy-absorption capacity. Besides the significant improvement in the mechanical properties of UHP-HFRCC, the cost was reduced, and the workability of the material was improved by using relatively low-volume fractions of fibers (total volume fraction = 2.5 to 3%).
Original language | English |
---|---|
Pages (from-to) | 309-318 |
Number of pages | 10 |
Journal | ACI Materials Journal |
Volume | 111 |
Issue number | 3 |
DOIs | |
Publication status | Published - 2014 |
Keywords
- Energy-absorption capacity
- Hybrid
- Hybrid fiber-reinforced cement-based composite
- Macrofiber
- Microfiber
- Tensile strength
- Tensile-strain capacity
ASJC Scopus subject areas
- Civil and Structural Engineering
- Building and Construction
- Materials Science(all)