Using Calcium Carbonate Whisker in Hybrid Fiber Reinforced Cementitious Composites

The multi-scale nature and multi-scale cracking behavior of cementitious composite determine its micro-, meso- and macro-performance. A new kind of fiber hybridization containing steel fiber, polyvinyl alcohol (PVA) fiber and cheap calcium carbonate (CaCO3) whisker (approximately $230 per ton) was designed to increase the multi-scale cracking resistance for cementitious composites. Mechanical properties, microstructures, reinforcing mechanisms and economical efficiency of this designed hybrid fiber reinforced composites were presented. The results indicated that both the flexural strength and flexural toughness are significantly improved. Scanning electron microscopy images and fracture tests confirmed that the interaction of different fibers and multi-scale cracks contributes to enhancing the mechanical properties of cementitious composite, which is also reflected in its deflection hardening performance and multiple cracking behavior. Moreover, it seems possible that the steel fibers and PVA fibers can be partly replaced with CaCO3 whiskers, which is very beneficial to decrease the production cost of fiber reinforced cementitious composites for large scale construction project applications.

• Record URL:
  • https://doi.org/10.1061/(ASCE)MT.1943-5533.0001041
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/08991561
• Supplemental Notes:
  • © 2014 American Society of Civil Engineers.
• Authors:
  • Cao, Mingli
  • Zhang, Cong
  • Li, Yong
  • Wei, Jianqiang
• Publication Date: 2015-4

Language

• English

Media Info

• Media Type: Web
• Features: References;
• Serial:
  • Journal of Materials in Civil Engineering
  • Volume: 27
  • Issue Number: 4
  • Publisher: American Society of Civil Engineers
  • ISSN: 0899-1561
  • EISSN: 1943-5533
  • Serial URL: http://ascelibrary.org/journal/jmcee7

Subject/Index Terms

• TRT Terms: Calcium carbonate; Composite materials; Cracking; Fiber reinforced concrete; Mechanical properties; Microstructure; Polyvinyl acetate; Steel fibers
• Subject Areas: Highways; Materials; I32: Concrete;

Filing Info

• Accession Number: 01515145
• Record Type: Publication
• Files: TRIS, ASCE
• Created Date: Feb 21 2014 3:16PM