Lightweight thermal efficient repair mortars with expanded glass (EG) for repairing historical buildings: The effect of binder type and EG aggregate dosage on their performance

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F22%3A00360161" target="_blank" >RIV/68407700:21110/22:00360161 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216305:26110/22:PU145753

Výsledek na webu

<a href="https://doi.org/10.1016/j.enbuild.2022.112526" target="_blank" >https://doi.org/10.1016/j.enbuild.2022.112526</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.enbuild.2022.112526" target="_blank" >10.1016/j.enbuild.2022.112526</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Lightweight thermal efficient repair mortars with expanded glass (EG) for repairing historical buildings: The effect of binder type and EG aggregate dosage on their performance

Popis výsledku v původním jazyce

The mutual effect of a binder type and dosage of expanded glass granules on the properties and performance of lightweight repair mortars was researched. As the problems associated with repair and renewal of heritage buildings requires complex approach and solution, broad experimental campaign was conducted to assess mortars’ structural, hygric, thermal, mechanical, and durability parameters and to evaluate their applicability in buildings refurbishment and thermal efficiency improvement. Most of the tests were done for samples matured for 28, 90, and 360 days. Where applicable, the prepared mortars were classified according to the WTA directive 2-9-04/D and technical standard EN 998-1. The compatibility issues were also considered. The lime and natural lime mortars lightened with expanded glass granules were found to be applicable for repair purposes, even for historical heritage buildings, where often contradictory requirements of culture heritage authorities must be met. It was due to their moderate strength, high porosity, permeability for water vapour, salt crystallization resistance, and low thermal conductivity which enabled to rank these mortars in category T1, and T2, respectively. On the other hand, lime-cement mortars are inappropriate for rehabilitation of older buildings due to their composition, high mechanical strength and lower permeability for water and water vapour but can find use in new buildings or in existing buildings, where cement-based mortars are originally used. In this case, their advanced properties and durability will be exploited.

Název v anglickém jazyce

Lightweight thermal efficient repair mortars with expanded glass (EG) for repairing historical buildings: The effect of binder type and EG aggregate dosage on their performance

Popis výsledku anglicky

The mutual effect of a binder type and dosage of expanded glass granules on the properties and performance of lightweight repair mortars was researched. As the problems associated with repair and renewal of heritage buildings requires complex approach and solution, broad experimental campaign was conducted to assess mortars’ structural, hygric, thermal, mechanical, and durability parameters and to evaluate their applicability in buildings refurbishment and thermal efficiency improvement. Most of the tests were done for samples matured for 28, 90, and 360 days. Where applicable, the prepared mortars were classified according to the WTA directive 2-9-04/D and technical standard EN 998-1. The compatibility issues were also considered. The lime and natural lime mortars lightened with expanded glass granules were found to be applicable for repair purposes, even for historical heritage buildings, where often contradictory requirements of culture heritage authorities must be met. It was due to their moderate strength, high porosity, permeability for water vapour, salt crystallization resistance, and low thermal conductivity which enabled to rank these mortars in category T1, and T2, respectively. On the other hand, lime-cement mortars are inappropriate for rehabilitation of older buildings due to their composition, high mechanical strength and lower permeability for water and water vapour but can find use in new buildings or in existing buildings, where cement-based mortars are originally used. In this case, their advanced properties and durability will be exploited.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20101 - Civil 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

Název periodika

Energy and Buildings

ISSN

0378-7788

e-ISSN

1872-6178

Svazek periodika

276

Číslo periodika v rámci svazku

9

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

16

Strana od-do

—

Kód UT WoS článku

000870527300002

EID výsledku v databázi Scopus

2-s2.0-85139075252