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Lightweight pumice mortars for repair of historic buildings –Assessment of physical parameters, engineering properties and durability

Identifikátory výsledku

  • Kód výsledku v IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26110%2F23%3APU149045" target="_blank" >RIV/00216305:26110/23:PU149045 - isvavai.cz</a>

  • Nalezeny alternativní kódy

    RIV/68407700:21110/23:00368386

  • Výsledek na webu

    <a href="https://www.sciencedirect.com/science/article/pii/S0950061823029926" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0950061823029926</a>

  • DOI - Digital Object Identifier

    <a href="http://dx.doi.org/10.1016/j.conbuildmat.2023.133275" target="_blank" >10.1016/j.conbuildmat.2023.133275</a>

Alternativní jazyky

  • Jazyk výsledku

    angličtina

  • Název v původním jazyce

    Lightweight pumice mortars for repair of historic buildings –Assessment of physical parameters, engineering properties and durability

  • Popis výsledku v původním jazyce

    The subject of the presented research was an experimental analysis of physical, engineering and durability parameters of lightweight mortars intended for the repair of historical buildings. Compatibility criteria, the requirements of technical standards and guidelines, and last but not least, previously published research results dealing with the development of mortars for repair delicate historic structures were taken into account in the design of mortar composition. Crushed pumice of a similar grain size was used to lighten the reference lime-based mortar and natural hydraulic lime mortar with quartz filler. Replacement of quartz sand with pumice was 25, 50, 75 and 100% by volume. The use of pumice allowed the fundamental physical, mechanical, hygric, thermal and durability parameters of the lightweight mortars to be such that they met the standard requirements for repair mortars and the heritage conservation requirements for compatibility with the original materials of historic masonry. The main finding was the fact that by replacing sand with pumice, a significant increase in the porosity of the mortars was achieved, while maintaining sufficient mechanical strength due to the pozzolanic reaction of the pumice. Mortars based on natural hydraulic lime have become more resistant to frost and salt crystallization. The advantage of the developed mortars was their low thermal conductivity and high water vapor permeability, which made them suitable for use on damp masonry, which is a substantial scientific contribution of the manuscript.

  • Název v anglickém jazyce

    Lightweight pumice mortars for repair of historic buildings –Assessment of physical parameters, engineering properties and durability

  • Popis výsledku anglicky

    The subject of the presented research was an experimental analysis of physical, engineering and durability parameters of lightweight mortars intended for the repair of historical buildings. Compatibility criteria, the requirements of technical standards and guidelines, and last but not least, previously published research results dealing with the development of mortars for repair delicate historic structures were taken into account in the design of mortar composition. Crushed pumice of a similar grain size was used to lighten the reference lime-based mortar and natural hydraulic lime mortar with quartz filler. Replacement of quartz sand with pumice was 25, 50, 75 and 100% by volume. The use of pumice allowed the fundamental physical, mechanical, hygric, thermal and durability parameters of the lightweight mortars to be such that they met the standard requirements for repair mortars and the heritage conservation requirements for compatibility with the original materials of historic masonry. The main finding was the fact that by replacing sand with pumice, a significant increase in the porosity of the mortars was achieved, while maintaining sufficient mechanical strength due to the pozzolanic reaction of the pumice. Mortars based on natural hydraulic lime have become more resistant to frost and salt crystallization. The advantage of the developed mortars was their low thermal conductivity and high water vapor permeability, which made them suitable for use on damp masonry, which is a substantial scientific contribution of the manuscript.

Klasifikace

  • Druh

    J<sub>imp</sub> - Článek v periodiku v databázi Web of Science

  • CEP obor

  • OECD FORD obor

    20101 - Civil engineering

Návaznosti výsledku

  • Projekt

    <a href="/cs/project/GA21-06582S" target="_blank" >GA21-06582S: Experimentální a počítačová analýza transportu, akumulace a krystalizace solí v nehydrofobizovaných omítkových maltách</a><br>

  • Návaznosti

    P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Ostatní

  • Rok uplatnění

    2023

  • Kód důvěrnosti údajů

    S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Údaje specifické pro druh výsledku

  • Název periodika

    Construction and building materials

  • ISSN

    0950-0618

  • e-ISSN

    1879-0526

  • Svazek periodika

    neuveden

  • Číslo periodika v rámci svazku

    133275

  • Stát vydavatele periodika

    GB - Spojené království Velké Británie a Severního Irska

  • Počet stran výsledku

    20

  • Strana od-do

    „“-„“

  • Kód UT WoS článku

    001106655000001

  • EID výsledku v databázi Scopus

    2-s2.0-85170643610