Compressive and flexural strength behavior of ultra-high performance mortar reinforced with cellulose nano-fibers

Steve W.M. Supit, Tomoya Nishiwaki

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)


Cellulose fibers, because of their chemical and physical characteristics, are compatible with other materials to be used for the production of building components. This paper presents the influence of using cellulose nanofibers (CNFs) made from plantderived cellulose as reinforcement in ultra-high performance (UHP) mortar. In this study, the dispersion method of CNFs using manual and mechanical mixing was also observed. The effects of different dosage of CNFs, namely, 0.05%, 0.1% and 0.15% by wt. of binders (premixed low-heat cement and silica fume) with constant water to binder ratio of 0.15, were evaluated based on the compressive and flexural strengths at the seventh day after steam curing. Results show that the highest compressive strength value of 184 MPa was reached by UHP mortar sample containing 0.05% CNFs by wt. of binders. However, the addition of more CNFs content up to 0.15% did not result in further improvement. Based on load-CMOD curves, UHP mortar reinforced with 0.05% CNFs was found most effective in enhancing the energy absorption capacity and toughness index with flexural strength at peak load of 14.44MPa (36% higher than control UHP mortar). The results indicate the well-post crack behavior of CNFs mortars in comparison with control UHP low-heat cement mortar. Moreover, Scanning Electron Microscopy (SEM) analysis shows that the phenomenon of the bridging effect of CNFs could not be significantly detected since the short fiber might be fractured under loading due to less bonding. Furthermore, this study concludes that even a low volume fraction, i.e., 0.05%, of CNFs is sufficient in increasing the ductility of ultra-high performance mortar.

Original languageEnglish
Pages (from-to)365-372
Number of pages8
JournalInternational Journal on Advanced Science, Engineering and Information Technology
Issue number1
Publication statusPublished - 2019


  • Cellulose nano-fibers
  • Compressive
  • Dispersion
  • Flexural
  • SEM

ASJC Scopus subject areas

  • Computer Science(all)
  • Agricultural and Biological Sciences(all)
  • Engineering(all)


Dive into the research topics of 'Compressive and flexural strength behavior of ultra-high performance mortar reinforced with cellulose nano-fibers'. Together they form a unique fingerprint.

Cite this