A study of carbonation in non-hydraulic lime mortars

摘要: Lime has been used in construction for millennia, and its value, especially the field of conservation architecture, only recently rediscovered. mortars harden through carbonation, this thesis is a study that process. The research conducted resulted development two novel techniques measurement detection carbonation. first technique method thermogravimetric analysis which allows carbonation profile to be measured within an acceptable time-frame. second use drilling resistance visualise profile. potential elemental measure also identified. It demonstrated lime/water ratio less impact on compressive strength air lime than had previously supposed. change pore size distribution caused by studied, theory proposed explain phenomenon. Five different forms binder were studied. these structural performance resultant assessed. was concluded made with putties perform better dry hydrate. Mortars dispersed hydrated appear as well putties, but at slower rate growth. extra mature putty does not confer benefits when compared ordinary putty. shown calcitic aggregates can produce moderately hydraulic mortars. theorised phenomenon directly related rather complex interaction granulometry, mineralogy, chemistry porosity aggregate binder.