DURABILITY PROPERTIES OF NON-HYDROPHOBIZED LIME MORTARS WITH EXPANDED AGGREGATE: SALTS AND ICE CRYSTALLIZATION RESISTANCE

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26110%2F22%3APU144985" target="_blank" >RIV/00216305:26110/22:PU144985 - isvavai.cz</a>

Výsledek na webu

<a href="https://paginas.fe.up.pt/~m2d/proceedings_m2d2022/data/papers/18218.pdf" target="_blank" >https://paginas.fe.up.pt/~m2d/proceedings_m2d2022/data/papers/18218.pdf</a>

DOI - Digital Object Identifier

—

Jazyk výsledku

angličtina

Název v původním jazyce

DURABILITY PROPERTIES OF NON-HYDROPHOBIZED LIME MORTARS WITH EXPANDED AGGREGATE: SALTS AND ICE CRYSTALLIZATION RESISTANCE

Popis výsledku v původním jazyce

Porous pozzolanically active aggregate can be used to prepare lightweight mortars with a high ability to salt accumulation from masonry and enhanced liquid water permeability. In this study, the comparison of non-hydrophobized expanded perlite, expanded glass, and expanded clay as lightweight aggregate in air lime mortars and natural hydraulic lime mortars has been investigated with emphasis on the resistance to salts and ice crystallization. The results of frost resistance tests were expressed as frost resistance coefficient for each mortar. The salt crystallization resistance of mortars were determined using 10% Na2SO4, 3% NaCl and 3% NH4NO3 solutions. The microstructure of mortars after the testing was monitored by scanning electron microscope and amount of anions absorbed in the mortars was determined by chemical analysis. The expanded aggregate significantly improved frost resistance of the mortars. The mortars with expanded perlite and expanded clay accumulated nitrates and sulfates to a greater

Název v anglickém jazyce

DURABILITY PROPERTIES OF NON-HYDROPHOBIZED LIME MORTARS WITH EXPANDED AGGREGATE: SALTS AND ICE CRYSTALLIZATION RESISTANCE

Popis výsledku anglicky

Porous pozzolanically active aggregate can be used to prepare lightweight mortars with a high ability to salt accumulation from masonry and enhanced liquid water permeability. In this study, the comparison of non-hydrophobized expanded perlite, expanded glass, and expanded clay as lightweight aggregate in air lime mortars and natural hydraulic lime mortars has been investigated with emphasis on the resistance to salts and ice crystallization. The results of frost resistance tests were expressed as frost resistance coefficient for each mortar. The salt crystallization resistance of mortars were determined using 10% Na2SO4, 3% NaCl and 3% NH4NO3 solutions. The microstructure of mortars after the testing was monitored by scanning electron microscope and amount of anions absorbed in the mortars was determined by chemical analysis. The expanded aggregate significantly improved frost resistance of the mortars. The mortars with expanded perlite and expanded clay accumulated nitrates and sulfates to a greater

Druh

O - Ostatní výsledky

CEP obor

—

OECD FORD obor

20501 - Materials engineering

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)

Rok uplatnění

2022

Kód důvěrnosti údajů

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