Properties of multi-layer renders with fly ash and boiler slag admixtures for salt-laden masonry

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F21%3A00346575" target="_blank" >RIV/68407700:21110/21:00346575 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1016/j.conbuildmat.2021.122366" target="_blank" >https://doi.org/10.1016/j.conbuildmat.2021.122366</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.conbuildmat.2021.122366" target="_blank" >10.1016/j.conbuildmat.2021.122366</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Properties of multi-layer renders with fly ash and boiler slag admixtures for salt-laden masonry

Popis výsledku v původním jazyce

The effect of the use of boiler slag (BS) and fly ash (FA) admixtures in cement-lime renders for an application in repair of salty masonry was investigated. For masonry walls with high degree of salinity, renders with incorporated BS were designed. For structures of a low degree of salinity, external renders were prepared without BS. The mix of perlite and silica sand was used as fine aggregate. In all prepared materials, methyl cellulose was added. In chosen mortars, ethylene vinyl acetate copolymer was inmixed to improve functional and performance characteristic of final products. For the developed renders, comprehensive tests of fresh and hardened mortars properties were conducted, including the measurement of adhesion, water contact angle, mercury pore size distribution, thermal properties, frost and chemical resistance. The microstructure and morphology of the developed mortars was observed using scanning electron microscope SEM. The hardened products were analyzed also by Fourier transform infrared (FT-IR) spectroscopy. The designed renovation renders have satisfied the criteria of WTA 4–9-02 directive. The renders yielded compressive strength from 5.1 to 6.9 MPa. Frost resistance was greatly improved by the 20% replacement of Portland cement with FA. Base coat renders exhibited good resistance to Na2SO4 crystallization. The use of ethylene vinyl acetate copolymer enhanced the adhesion of renders to substrate.

Název v anglickém jazyce

Properties of multi-layer renders with fly ash and boiler slag admixtures for salt-laden masonry

Popis výsledku anglicky

The effect of the use of boiler slag (BS) and fly ash (FA) admixtures in cement-lime renders for an application in repair of salty masonry was investigated. For masonry walls with high degree of salinity, renders with incorporated BS were designed. For structures of a low degree of salinity, external renders were prepared without BS. The mix of perlite and silica sand was used as fine aggregate. In all prepared materials, methyl cellulose was added. In chosen mortars, ethylene vinyl acetate copolymer was inmixed to improve functional and performance characteristic of final products. For the developed renders, comprehensive tests of fresh and hardened mortars properties were conducted, including the measurement of adhesion, water contact angle, mercury pore size distribution, thermal properties, frost and chemical resistance. The microstructure and morphology of the developed mortars was observed using scanning electron microscope SEM. The hardened products were analyzed also by Fourier transform infrared (FT-IR) spectroscopy. The designed renovation renders have satisfied the criteria of WTA 4–9-02 directive. The renders yielded compressive strength from 5.1 to 6.9 MPa. Frost resistance was greatly improved by the 20% replacement of Portland cement with FA. Base coat renders exhibited good resistance to Na2SO4 crystallization. The use of ethylene vinyl acetate copolymer enhanced the adhesion of renders to substrate.

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

2021

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

278

Číslo periodika v rámci svazku

122366

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

15

Strana od-do

—

Kód UT WoS článku

000634540000032

EID výsledku v databázi Scopus

2-s2.0-85100003791