Properties of Fine-Grained Concrete with Admixture of Diatomite Powder

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F19%3A00333265" target="_blank" >RIV/68407700:21110/19:00333265 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1088/1757-899X/603/2/022045" target="_blank" >http://dx.doi.org/10.1088/1757-899X/603/2/022045</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1088/1757-899X/603/2/022045" target="_blank" >10.1088/1757-899X/603/2/022045</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Properties of Fine-Grained Concrete with Admixture of Diatomite Powder

Popis výsledku v původním jazyce

The paper reports on the experimental assessment of the physical properties of finegrained cement-based composites whose composition was enriched with admixture of diatomite powder. Diatomaceous earth, due to its origin and availability, represents highly valuable low cost material that can dispose with high pozzlanic activity. On this account, it can help to mitigate the quantity of used Portland cement, and thus enable to reduce the cost of produced cementbased composites, and accordingly decrease harmful environmental impacts of cement production, especially CO2 emission. In this work, possible use of diatomite powder as partial Portland cement replacement in concrete compoistion was studied. The cement replacement ratio was 5 %, 10 %, 15 %, and 20 % by volume. Reference concrete mixture was prepared as well. The water/binder ratio was 0.5, and was kept similar for all prepared composite mixtures. For 28 days water cured samples, bulk density, specific density, strength parameters, and thermophysical properties were tested. Results of experimental analysis showed high pozzolanic activity of diatomite resulting in reduced porosity and increased mechanical resistance of the developed concretes. The highly porous structure of diatomite particles helped to decrease concrete heat transport properties, despite of low total open porosity of the tested specimens.

Název v anglickém jazyce

Properties of Fine-Grained Concrete with Admixture of Diatomite Powder

Popis výsledku anglicky

The paper reports on the experimental assessment of the physical properties of finegrained cement-based composites whose composition was enriched with admixture of diatomite powder. Diatomaceous earth, due to its origin and availability, represents highly valuable low cost material that can dispose with high pozzlanic activity. On this account, it can help to mitigate the quantity of used Portland cement, and thus enable to reduce the cost of produced cementbased composites, and accordingly decrease harmful environmental impacts of cement production, especially CO2 emission. In this work, possible use of diatomite powder as partial Portland cement replacement in concrete compoistion was studied. The cement replacement ratio was 5 %, 10 %, 15 %, and 20 % by volume. Reference concrete mixture was prepared as well. The water/binder ratio was 0.5, and was kept similar for all prepared composite mixtures. For 28 days water cured samples, bulk density, specific density, strength parameters, and thermophysical properties were tested. Results of experimental analysis showed high pozzolanic activity of diatomite resulting in reduced porosity and increased mechanical resistance of the developed concretes. The highly porous structure of diatomite particles helped to decrease concrete heat transport properties, despite of low total open porosity of the tested specimens.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

20501 - Materials engineering

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2019

Kód důvěrnosti údajů

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

Název statě ve sborníku

IOP Conf. Series: Materials Science and Engineering

ISBN

—

ISSN

1757-899X

e-ISSN

1757-899X

Počet stran výsledku

6

Strana od-do

—

Název nakladatele

IOP Publishing Ltd.

Místo vydání

Bristol

Místo konání akce

Praha

Datum konání akce

17. 6. 2019

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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