Sulphate corrosion of cement pastes with a high content of waste marble powder

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21720%2F22%3A00358374" target="_blank" >RIV/68407700:21720/22:00358374 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68407700:21110/22:00358374

Výsledek na webu

<a href="https://doi.org/10.14311/APP.2022.34.0075" target="_blank" >https://doi.org/10.14311/APP.2022.34.0075</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.14311/APP.2022.34.0075" target="_blank" >10.14311/APP.2022.34.0075</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Sulphate corrosion of cement pastes with a high content of waste marble powder

Popis výsledku v původním jazyce

The article focuses on sulphate corrosion of cement pastes with a high content of waste micronized marble powder. Micronized marble powder is used as a substitute for Portland cement CEM I 42.5R. The amount of micronized marble powder used is from 5 to 50 wt. %. The research also tested a reference mixture composed only of Portland cement. The used accelerated sulphate corrosion consists of cyclic saturation and drying with 10% Na2SO4 solution for 56 days. During sulphate corrosion, samples are placed in a controlled environment at 5 ± 1 °C and 85 % relative humidity to allow thaumasite to form. During cycling, samples were continuously visually monitored and documented. Subsequently, after 56 days, the samples were destructively tested for compressive strength. The research revealed a negative effect of micronized marble powder on the resistance to sulphate corrosion, where in contrast to the reference mixture the decrease in compressive strength is up to twofold.

Název v anglickém jazyce

Sulphate corrosion of cement pastes with a high content of waste marble powder

Popis výsledku anglicky

The article focuses on sulphate corrosion of cement pastes with a high content of waste micronized marble powder. Micronized marble powder is used as a substitute for Portland cement CEM I 42.5R. The amount of micronized marble powder used is from 5 to 50 wt. %. The research also tested a reference mixture composed only of Portland cement. The used accelerated sulphate corrosion consists of cyclic saturation and drying with 10% Na2SO4 solution for 56 days. During sulphate corrosion, samples are placed in a controlled environment at 5 ± 1 °C and 85 % relative humidity to allow thaumasite to form. During cycling, samples were continuously visually monitored and documented. Subsequently, after 56 days, the samples were destructively tested for compressive strength. The research revealed a negative effect of micronized marble powder on the resistance to sulphate corrosion, where in contrast to the reference mixture the decrease in compressive strength is up to twofold.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

20101 - Civil engineering

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2022

Kód důvěrnosti údajů

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

Název statě ve sborníku

NMM 2021 Nano & Macro Mechanics

ISBN

978-80-01-06976-9

ISSN

—

e-ISSN

2336-5382

Počet stran výsledku

5

Strana od-do

75-79

Název nakladatele

České vysoké učení technické v Praze

Místo vydání

Praha

Místo konání akce

Praha

Datum konání akce

16. 9. 2021

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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