Binder leaching from hydraulic lime mortars

Phillip Frank Gower Banfill, Alan Mark Forster

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

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Abstract

Ammonium nitrate leachant was used to accelerate the deterioration of mortars containing natural hydraulic lime binders. Loss of binder reduced the alkalinity and strength of the mortar and increased its sorptivity. The leached depth followed diffusion-controlled kinetics with the rate constant increasing in line with the increasing free calcium hydroxide content of the binder. A predictive model was developed for mortars, both uncarbonated, e.g. those found deep in mass masonry or at early age in new construction, and carbonated, e.g. those exposed to the atmosphere.
Original languageEnglish
Title of host publication35th Cement and Concrete Science Conference
Number of pages3
Publication statusUnpublished - 2015
Event35th Cement and Concrete Science Conference - University of Aberdeen, Aberdeen, United Kingdom
Duration: 26 Aug 201528 Aug 2015

Conference

Conference35th Cement and Concrete Science Conference
CountryUnited Kingdom
CityAberdeen
Period26/08/1528/08/15

Keywords

  • Natural hydraulic lime
  • Mortar
  • Leaching
  • Strength
  • Sorptivity

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