Sustainable cement-gypsum composite with reduced ettringite expansion

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Construction materials based on either Portland cement or gypsum are amongst the most popular and widely used construction materials. Their applications however may berestricted by the specific properties or economical requirements. Composite incorporating both binders could be a cheap solution for construction industry of good mechanical/physical properties. However, creation of a composite of low shrinkage and preferably small expansion based on ettringite formation may be difficult due to its high aggressiveness. The authors propose that the limitation of ettringite crystals growth may be achieved by introduction ofpuzzolanic additives in form of microsilica and methylamonic compounds,strongly bonding calcium hydroxide. Application of hexamine may further reduceettringite expansion.

Original languageEnglish
Title of host publicationSecond International Conference on Sustainable Construction Materials and Technologies
EditorsJ Zachar, P. Claisse, T.R. Naik, E. Ganjian
Pages217-228
Publication statusPublished - 2010

Keywords

  • cementitious materials
  • sustainable construction materials
  • cement composites

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    Klemm, A. J. (2010). Sustainable cement-gypsum composite with reduced ettringite expansion. In J. Zachar, P. Claisse, T. R. Naik, & E. Ganjian (Eds.), Second International Conference on Sustainable Construction Materials and Technologies (pp. 217-228) http://researchonline.gcu.ac.uk/bne/196