Experimental assessment of the effect of plasticizing and air-entraining on mechanical properties of refractory cement composites

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F18%3A00323689" target="_blank" >RIV/68407700:21110/18:00323689 - isvavai.cz</a>

Výsledek na webu

<a href="http://bccm4.com.br/proceedings/fullpapers/p007.pdf" target="_blank" >http://bccm4.com.br/proceedings/fullpapers/p007.pdf</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.21452/bccm4.2018.02.03" target="_blank" >10.21452/bccm4.2018.02.03</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Experimental assessment of the effect of plasticizing and air-entraining on mechanical properties of refractory cement composites

Popis výsledku v původním jazyce

This article is focused on the comparison of plasticizing and air-entraining additives and their effect on the mechanical properties of composite based on aluminous cement. Our results are intended to help in the development of lightweight composite with the ability to withstand temperatures over 1000 °C and also reduce a heat transfer from a high-temperature source, either by direct contact (conduction/convection) or via radiation. Operation at high temperature is of fundamental importance to many major sectors of industry, including material production and processing, chemical engineering, power generation and more. The objective is to achieve competitive performance with competitive life-cycle costs. Maximum material efficiency and minimum manufacturing and operating costs are key factors in meeting this objective. Many factors have to be considered in order to choose materials with sufficient economic conditions for a particular application. For the purpose of this experiment, specimens were created from cement paste and different dosage of chopped carbon fibres. Experimental investigation underwent two series of samples with different types of additives. The first series contains a plasticizing additive, the second series contains an air-entraining additive. The purpose was to evaluate different effects on the workability of the fresh mixture, bulk density and mechanical properties. The strength of samples was measured after exposure to high temperatures of 600 °C and 1000 °C. The residual properties were compared with each other and also to samples dried at the temperature of 105 °C. The obtained results revealed a significant level of influence of the above-mentioned additives on the composition of the studied refractory composite.

Název v anglickém jazyce

Experimental assessment of the effect of plasticizing and air-entraining on mechanical properties of refractory cement composites

Popis výsledku anglicky

This article is focused on the comparison of plasticizing and air-entraining additives and their effect on the mechanical properties of composite based on aluminous cement. Our results are intended to help in the development of lightweight composite with the ability to withstand temperatures over 1000 °C and also reduce a heat transfer from a high-temperature source, either by direct contact (conduction/convection) or via radiation. Operation at high temperature is of fundamental importance to many major sectors of industry, including material production and processing, chemical engineering, power generation and more. The objective is to achieve competitive performance with competitive life-cycle costs. Maximum material efficiency and minimum manufacturing and operating costs are key factors in meeting this objective. Many factors have to be considered in order to choose materials with sufficient economic conditions for a particular application. For the purpose of this experiment, specimens were created from cement paste and different dosage of chopped carbon fibres. Experimental investigation underwent two series of samples with different types of additives. The first series contains a plasticizing additive, the second series contains an air-entraining additive. The purpose was to evaluate different effects on the workability of the fresh mixture, bulk density and mechanical properties. The strength of samples was measured after exposure to high temperatures of 600 °C and 1000 °C. The residual properties were compared with each other and also to samples dried at the temperature of 105 °C. The obtained results revealed a significant level of influence of the above-mentioned additives on the composition of the studied refractory composite.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

20101 - Civil engineering

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2018

Kód důvěrnosti údajů

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

Název statě ve sborníku

Proceedings of the 4th Brazilian Conference on Composite Materials

ISBN

978-85-85083-00-7

ISSN

—

e-ISSN

—

Počet stran výsledku

7

Strana od-do

66-72

Název nakladatele

Pontifical Catholic University of Rio de Janeiro

Místo vydání

Rio de Janeiro

Místo konání akce

Rio de Janeiro

Datum konání akce

22. 7. 2018

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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