Early-age autogenous and drying shrinkage behavior of cellulose fiber-reinforced cementitious materials

Shiho Kawashima*, Surendra P Shah

*Corresponding author for this work

Research output: Contribution to journalArticle

61 Scopus citations

Abstract

The objective of this study was to determine how the early-age shrinkage behavior of cementitious materials is affected by the addition of saturated cellulose fibers under sealed and unsealed conditions. The sealed condition simulates autogenous shrinkage exclusively while the unsealed condition introduces drying shrinkage, as well. Although the primary focus was to determine whether saturated cellulose fibers are suitable to mitigate autogenous shrinkage as an internal curing agent, evaluating their effect under drying conditions provided further insight into the overall shrinkage behavior of the composite material. At additions of 1% by mass of cement, the cellulose fibers were found to show significant drying shrinkage cracking control while providing some internal curing. In addition, early-age shrinkage test results were supplemented with a quantitative measure of fiber dispersion based on comparing theoretical and experimental values of the fiber volume fraction in hardened cementitious samples. Results indicated that improved dispersion leads to improved properties.

Original languageEnglish (US)
Pages (from-to)201-208
Number of pages8
JournalCement and Concrete Composites
Volume33
Issue number2
DOIs
StatePublished - Feb 1 2011

Keywords

  • A. Dispersion
  • A. Drying
  • C. Shrinkage
  • E. Fiber reinforcement
  • Internal curing

ASJC Scopus subject areas

  • Building and Construction
  • Materials Science(all)

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