Reactivity of natural pozzolans in lime mortars

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26110%2F23%3APU150256" target="_blank" >RIV/00216305:26110/23:PU150256 - isvavai.cz</a>
Result on the web
—
DOI - Digital Object Identifier
—

Result language
angličtina
Original language name
Reactivity of natural pozzolans in lime mortars
Original language description
Today, lime-pozzolan mortars are being used in the repair of historic buildings, replacing the lime-cement mortars that were previously used in this practice, but were incompatible with historic mortars. In this paper, the pozzolanic reactivity of seven different natural finely ground thermally untreated pozzolans (trass, pozzolanic earth, chalcedonite, pumice, zeolite, spongilite and lava) in lime mortars is investigated. All lime-pozzolan mortars achieved higher strengths than the reference lime mortar, especially after 90 and 180 days. Surprisingly, no clear correlation was observed between the pozzolanic activity of the natural pozzolans, determined by the Chapelle test, and the strength of the mortars. In order to successfully assess the reactivity of a pozzolan, it is not sufficient to determine just the pozzolanic activity, but it is also necessary to know its mineralogical composition and the chemical composition of the amorphous phases in detail and simulate the practical use of the lime-pozz
Czech name
—
Czech description
—

Project
<a href="/en/project/GA21-06582S" target="_blank" >GA21-06582S: Experimental and computational analysis of salt transport, accumulation, and crystallization in non-hydrophobized rendering mortars</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2023
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Similar results(10)