Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
권호 표지
DOI QR코드

DOI QR Code

Effect of Ar+ Ion Irradiation of Polymeric Fiber on Interface and Mechanical Properties of Cementitious Composites

  • Seong, Jin-Wook (R ＆ D center, P ＆ I Corp, Shinnare Techotown) ;
  • Lee, Seung-Hun (Department of Materials Science ＆ Engineering, Kunsan National University) ;
  • Kim, Ki-Hwan (R ＆ D center, P ＆ I Corp, Shinnare Techotow) ;
  • Beag, Young-Whoan (R ＆ D Center, P ＆ I Corp., Shinnae Techotow) ;
  • Koh, Seok-Keun (R ＆ D Center, P ＆ I Corp., Shinnae Techotow) ;
  • Yoon, Ki-Hyun (Department of Ceramic Engineering, Yonsei University)
  • Published : 2004.06.01
Download PDF
⟨ Previous Next ⟩

Abstract

The values of fracture energy and mechanical flexural strength of Fiber Reinforced Cement (FRC) with polypropylene (PP) fiber modified by Ion Assisted Reaction (JAR), by which functional groups were grafted on the surface of PP fiber, was improved about 2 times as those of fracture energy and flexural strength of cement reinforced by untreated PP fiber. PP fiber was irradiated in O$_2$ environment by Ar$\^$+/ ion. The contact angle of PP treated by IAR decreased largely when compared with untreated PP. From this result, we expected that surface energy and interfacial adhesion force of treated PP fiber increased. The strain hardening occurred in the strain-stress curve of FRC including PP treated by IAR when compared with that of FRC with untreated PP. These enhanced mechanical properties might be due to strong interaction between hydrophilic group on modified PP fiber and hydroxyl group in cement matrix. This hydrophilic group on surface modified PP fiber was confirmed by XPS analysis. We clearly observed hydration products that were fixed at modified PP fiber due to the strong adhesion force of interface in cement reinforced modified PP by SEM (Scanning Electron Microscopy) study.

Keywords

References

  1. J. Mater. Sci. v.27 Plasma Surface Modification of Advanced Organic Fibers J. R. Brown;P. J. C. Chappell;Z. Mathys
  2. ACI Mater. J. v.86 no.3 Tensile Stress Properties of Sifcon A. E. Naaman;J. R. Homrich
  3. J. Mater. Sci. v.27 Ammonia Plasma Treatment of Ultra High Strength Polyethylenc Fibers for Improved Adhesion to Epoxy Resin Z. F. Li;A. N. Natravali;W. Sachse https://doi.org/10.1007/BF01165997
  4. J. Appl. Polym. Sci. v.76 Plasma Treatment of Polymeric Fibers for Improved Performance in Cement Matrices C. Zhang;V. S. Gopalaratnam;H. K. Yasuda https://doi.org/10.1002/(SICI)1097-4628(20000628)76:14<1985::AID-APP1>3.0.CO;2-G
  5. J. Appl. Polym. Sci. v.13 Estimation of the Surface Free Energy of Polymers D. K. Owens;R. C. Wendt https://doi.org/10.1002/app.1969.070130815
  6. Cem. Conc. Res. v.28 Evaluation of the Stability of Polypropylene Fibers in Environments Aggressive to Cement-Based Materials N. Segre;E. Tonella;I. Joekes https://doi.org/10.1016/S0008-8846(97)00220-2
  7. Nucl. Instr. and Meth. B. v.152 Hudrophilic Group Formation on Hydrocarbon Polypropylene and Polystytrene by Ion Assisted Reaction tn an $O_2$ Environment S. C. Choi;S. Han;W. K. Choi;H.-J. Jung;S. K. Koh https://doi.org/10.1016/S0168-583X(99)00120-2
  8. Surf. and Coat. Tech. v.128;129 Hydrophilic Surface Formation on Materials and Its Application J. S. Cho;Y.-W. Beag;S. Han;K.-H Kim;J. Cho;S.-K. Koh
  9. Acta Metall. v.33 no.11 The Mecanics of Matrix Cracking in Brittle-Matrix Fiber Composites D. B. Marshall;B. N. Cox;A. G. Evans https://doi.org/10.1016/0001-6160(85)90124-5
  10. Com. Sci. &Tech. v.57 Polypropylene-Fiber-Reinforced Mortar Mixes: Optimization to Control Plastic Shrinkage M. A. Sanjuan;A. Moragues https://doi.org/10.1016/0001-6160(85)90124-5
  11. Mater. Sci. & Tech. v.11 Fiber Reinforcement in the Cement and Concrete Industry D. J. Hannant https://doi.org/10.1179/mst.1995.11.9.853
  12. J. Mater. Sci. v.20 The Microstructure of the Steel Fiber-Coment Interface A. Bentur;M. D. Cohen https://doi.org/10.1007/BF01113768
  13. Ph. D. Thesis Department of Civil and Environmental Engineering Fiber/Cement Bond Property Modification in Relation to Interfacial Microstructure Y. W. Chan https://doi.org/10.1007/BF01113768
  14. J. Adhes. Sci. Tech. v.6 Plasma Treated Ultra-High Strength Polyethylene Fibers. Part II : Mechanical Properties of PMMA Composites D. N. Hild;P. Schwartz https://doi.org/10.1163/156856192X00520
  15. Standard Test Method for Flexural Strength of Hydraulic Cement Mortars ASTM C 348 95 https://doi.org/10.1163/156856192X00520