Use of Chalcedonite Powder as a Supplementary Material in Lime Mortars

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26110%2F22%3APU145683" target="_blank" >RIV/00216305:26110/22:PU145683 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Use of Chalcedonite Powder as a Supplementary Material in Lime Mortars
Original language description
This paper presents a study on partial replacement of lime binder with chalcedonite powder with the purpose of exploring a new application of this waste dust as lime mortar additive. Chalcedonite powder is formed as a by-product of the treatment of mined stone containing chalcedony as the main mineral. Standard air lime mortars were made by incorporating from 0% to 40% of micronized chalcedonite powder in replacement to lime and their mechanical performances, microstructure, and durability were determined. Despite the fully crystalline nature, the chalcedonite powder showed an unusually high pozzolanic activity predicting an improvement in the mechanical properties and durability of lime mortars. As the replacement level in lime mortars increased, the amount of mixing water needed for the same mortar consistency decreased, and the performance properties of the mortars improved. The increase in strengths of mortars was manifested in the long term of 180 days. The progress in mortars carbonation, as well as the pozzolanic reaction of chalcedonite powder, led to the formation of denser, less water absorptive, and more frost resistant structure in air lime mortars.
Czech name
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Czech description
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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
2022
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
Book of Articles of 9th Euro-American Congress on Construction Pathology, Rehabilitation Technology and Heritage Management, REHABEND 2022
ISBN
978-84-09-42253-1
ISSN
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e-ISSN
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Number of pages
7
Pages from-to
1314-1320
Publisher name
UNIVERSITY OF CANTABRIA
Place of publication
SANTANDER (SPAIN)
Event location
Granada
Event date
Sep 13, 2022
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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