Influence of purified attapulgite clays on the adhesive properties of cement pastes as measured by the tack test

Shiho Kawashima*, Mohend Chaouche, David J. Corr, Surendra P. Shah

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

73 Scopus citations

Abstract

This study evaluates the influence of small additions of highly-purified attapulgite clays (0.2% and 0.5% addition by mass of cement) on the adhesive properties of cement pastes. Adhesive properties are measured by the tack test, a novel method of evaluating the rheological properties of granular materials. To better understand the results of the tack test as they pertain to cementitious materials, a highly concentrated material that is evolving due to thixotropic rebuilding and hydration, they are supplemented with a measure of the viscoelastic properties over time obtained through low-amplitude oscillatory shear rheometry. The influence of different preshear conditions and resting times (age of paste) on the adhesive properties are determined. Results show the tack test to be a suitable method for obtaining useful information about the adhesive properties and structural evolution of the material in the fresh state.

Original languageEnglish (US)
Pages (from-to)35-41
Number of pages7
JournalCement and Concrete Composites
Volume48
DOIs
StatePublished - Apr 2014

Keywords

  • Adhesive properties
  • Attapulgite
  • Cement
  • Nanoclay
  • Rheology
  • Tack test

ASJC Scopus subject areas

  • Building and Construction
  • General Materials Science

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