硬化水泥净浆微观强度测试与表征

Translated title of the contribution: Strength characterization of hydrated cement paste at micro-scale

Zhi Ge, Nengdong Jiang, Hongzhi Zhang*, Dongshuai Hou, Erik Schlangen, Branko Šavija

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

Abstract

Micro-cubes of hardened cement paste with the lengths of 100 μm and 200 μm were prepared by micro-dicing and thin-sectioning techniques. The compressive strength and splitting strength of these specimens were measured by a nanoindenter equipped with different types of tips. Considering the heterogeneity nature of the material in a micro-scale, we examined 100 specimens via a statistic analysis. The results show that the two-parameter Weibull distribution can be used to represent the probability distribution of both compressive strength and splitting strength in a micro-scale. The specimens with a higher water-to-binder ratio have a higher strength and a lower variability. Furthermore, the specimen size has an influence on the measured strength. The bigger specimens have lower strength and variability. The reported average value and variability of strengths obtained in this work are greater than those of the concrete in a meso-scale, but lower than those of the hydration product in a nano-scale.
Translated title of the contributionStrength characterization of hydrated cement paste at micro-scale
Original languageChinese (Traditional)
Pages (from-to)887-892
Number of pages6
JournalKuei Suan Jen Hsueh Pao/Journal of the Chinese Ceramic Society
Volume49
Issue number5
DOIs
Publication statusPublished - 2021

Keywords

  • Hydrated cement paste
  • Micro-scale
  • One-sided splitting strength
  • Uniaxial compressive strength
  • Weibull distribution

Fingerprint

Dive into the research topics of 'Strength characterization of hydrated cement paste at micro-scale'. Together they form a unique fingerprint.

Cite this