Non-hydrophobized perlite renders for repair and thermal insulation purposes: Influence of different binders on their properties and durability

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26110%2F20%3APU137123" target="_blank" >RIV/00216305:26110/20:PU137123 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68407700:21110/20:00342457

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S0950061820326222" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0950061820326222</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.conbuildmat.2020.120617" target="_blank" >10.1016/j.conbuildmat.2020.120617</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Non-hydrophobized perlite renders for repair and thermal insulation purposes: Influence of different binders on their properties and durability

Popis výsledku v původním jazyce

To meet today’s increasing requirements on the quality of life and thus indoor air climate, new advanced construction materials are under research and development. Specific issue represents repair and renewal of old or historically valuable buildings, where the newly applied materials must be compatible with those originally used in the past. Taking into consideration the necessity to decrease the energy consumption of existing buildings with valuable aesthetic facades and appearance, use of repair renders with improved thermal insulation performance represents acceptable solution to adopt the present building stock to actual thermal requirements. In this paper, complex characterization of non-hydrophobized lightweight renders designed at once for repair and thermal insulation purposes was performed. In composition of designed materials, silica sand was partially or fully replaced with expanded perlite of the similar grain size distribution, whereas the workability of fresh renders was maintained on the same level. Among broad experimental campaign, structural parameters, moisture and heat transport and storage properties, and mechanical parameters of the hardened renders were assessed in dependence on time of samples maturing. Frost resistance test was conducted to characterize renders durability. The use of lime and natural hydraulic lime in composition of perlite lightened mortars enabled to meet all the criteria on rendering and masonry mortars taking into consideration their functionality, compatibility, durability and thermal insulation performance. These mortars well found usable for repair of historical masonry and even in conservation of heritage protected buildings. On the other hand, the cement-lime renders were found to be incompatible, too rigid and less permeable both for water and water vapor than required by culture heritage authorities, related technical standards and directives for repair renders. Nevertheless, these can find use in the constructio

Název v anglickém jazyce

Non-hydrophobized perlite renders for repair and thermal insulation purposes: Influence of different binders on their properties and durability

Popis výsledku anglicky

To meet today’s increasing requirements on the quality of life and thus indoor air climate, new advanced construction materials are under research and development. Specific issue represents repair and renewal of old or historically valuable buildings, where the newly applied materials must be compatible with those originally used in the past. Taking into consideration the necessity to decrease the energy consumption of existing buildings with valuable aesthetic facades and appearance, use of repair renders with improved thermal insulation performance represents acceptable solution to adopt the present building stock to actual thermal requirements. In this paper, complex characterization of non-hydrophobized lightweight renders designed at once for repair and thermal insulation purposes was performed. In composition of designed materials, silica sand was partially or fully replaced with expanded perlite of the similar grain size distribution, whereas the workability of fresh renders was maintained on the same level. Among broad experimental campaign, structural parameters, moisture and heat transport and storage properties, and mechanical parameters of the hardened renders were assessed in dependence on time of samples maturing. Frost resistance test was conducted to characterize renders durability. The use of lime and natural hydraulic lime in composition of perlite lightened mortars enabled to meet all the criteria on rendering and masonry mortars taking into consideration their functionality, compatibility, durability and thermal insulation performance. These mortars well found usable for repair of historical masonry and even in conservation of heritage protected buildings. On the other hand, the cement-lime renders were found to be incompatible, too rigid and less permeable both for water and water vapor than required by culture heritage authorities, related technical standards and directives for repair renders. Nevertheless, these can find use in the constructio

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20101 - Civil engineering

Projekt

<a href="/cs/project/GA18-07332S" target="_blank" >GA18-07332S: Vlastnosti, trvanlivost a chování lehkých maltových směsí s minerálními plnivy</a><br>

Návaznosti

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

Rok uplatnění

2020

Kód důvěrnosti údajů

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

Název periodika

Construction and building materials

ISSN

0950-0618

e-ISSN

1879-0526

Svazek periodika

neuveden

Číslo periodika v rámci svazku

263

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

14

Strana od-do

1-14

Kód UT WoS článku

000582567100113

EID výsledku v databázi Scopus

2-s2.0-85090213252