Tensile creep behavior of sisal fibers under different environmental conditions

Research output: Contribution to journalResearch articleContributedpeer-review


  • Raylane de Souza Castoldi - , Pontifícia Universidade Católica do Rio de Janeiro (First author)
  • Marco Liebscher - , Chair of Construction Materials (Author)
  • Lourdes Maria Silva de Souza - , Pontifícia Universidade Católica do Rio de Janeiro (Author)
  • Viktor Mechtcherine - , Chair of Construction Materials (Author)
  • Flávio de Andrade Silva - , Pontifícia Universidade Católica do Rio de Janeiro (Author)


This study investigates the time-dependent behavior of sisal fibers under sustained uniaxial tensile loads in different environments, addressing gaps in understanding beyond quasi-static conditions. Testing involved immersion in water and alkaline solutions (0.5 M and 1 M NaOH) to simulate service conditions. Stress levels were set at 8, 16, and 33% of ultimate tensile strength (1, 2, and 4 N). Modifications, including alkaline treatment, styrene-butadiene polymer coating (50% and 100% v/v), and tannic acid functionalization, were applied to explore their impact on fiber creep behavior. Results indicated a logarithmic creep pattern, with a high constant rate in primary creep followed by secondary creep. Sisal fibers exhibited significant deformation under sustained load, and time-dependent strain varied with the applied load. High humidity increased the global rate of fiber deformation, resulting in elevated time-dependent strain levels. All treatments effectively reduced fiber creep strain, with tannic acid-functionalized fibers showing the best results. Subsequent quasi-static uniaxial tests assessed the mechanical response and durability of both pristine and modified fibers. Findings revealed that, compared to untreated fibers, modified sisal fibers demonstrated improved maintenance of mechanical properties after sustained-load tests in aggressive environments. This research contributes with valuable insights into the time-dependent behavior of sisal fibers and highlights the efficacy of various modifications in enhancing their durability under different loading conditions and environments.


Original languageEnglish
Pages (from-to)3742-3757
Number of pages16
JournalJournal of Materials Science
Issue number8
Publication statusPublished - 19 Feb 2024

External IDs

Scopus 85185977517


Research priority areas of TU Dresden

DFG Classification of Subject Areas according to Review Boards

Subject groups, research areas, subject areas according to Destatis