Natural hydraulic limes for masonry repair: hydration and workability

Phillip Frank Gower Banfill, Alan Mark Forster, Scott MacKenzie, Montserrat Pinilla Sanz , Ewan Marek Szadurski, Clare Torney

Research output: Contribution to conferencePaper

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Lime mortars are preferred for repair of historic masonry because their greater flexibility enables them to accommodate expansion and contraction in service without damaging the stone but there is little information on properties of mortars made with commercially available limes. Binder hydration rate and workability of mortars using Natural Hydraulic Limes of grades NHL2, NHL3.5 and NHL5 from four manufacturers is reported. Significant differences in the hydration rates between different limes offer the possibility of a better classification system. However, the variation in the workability between different products could pose challenges to users and specifiers of mortars for masonry repair.
Original languageEnglish
Number of pages4
Publication statusPublished - 14 Sep 2014
Event34th Annual Cement and Concrete Science Conference - University of Sheffield, Sheffield, United Kingdom
Duration: 14 Sep 201416 Sep 2014


Conference34th Annual Cement and Concrete Science Conference
Country/TerritoryUnited Kingdom


  • Natural hydraulic lime
  • Mortar
  • Hydration
  • Workability


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