Prediction of the degree of hydration at initial setting time of cement paste with particle agglomeration

Jian Jun Zheng, Jie Zhang, George W. Scherer

Research output: Contribution to journalArticle

11 Scopus citations

Abstract

This paper presents a computer simulation method for predicting the degree of hydration at the initial setting time of cement paste with particle agglomeration. Agglomeration is controlled by using a square-well potential for the interaction between two cement particles, and the degree of hydration at the initial setting time is determined using the burning algorithm. It is verified that, when the critical surface-to-surface distance for attachment is taken as 0.05 μm, the simulation predictions are in good agreement with experimental results. For cement particles in water at the initial stage of hydration, the number of clusters obeys the power law with an average Fisher exponent of 1.9. Finally, the effects of key factors affecting the degree of hydration at the initial setting time are quantitatively evaluated.

Original languageEnglish (US)
Pages (from-to)1280-1285
Number of pages6
JournalCement and Concrete Research
Volume42
Issue number9
DOIs
StatePublished - Sep 1 2012

All Science Journal Classification (ASJC) codes

  • Building and Construction
  • Materials Science(all)

Keywords

  • Cement paste
  • Degree of hydration
  • Initial setting time
  • Particle agglomeration
  • Percolation

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