The use of concrete filler as mineral admixture in concrete

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F46346741%3A_____%2F12%3ATEPOJ04" target="_blank" >RIV/46346741:_____/12:TEPOJ04 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

The use of concrete filler as mineral admixture in concrete

Popis výsledku v původním jazyce

One of the most important challenges of present time concrete science is how to reduce Portland cement production and limit its use. One reason for this is a need for CO2 emission reduction and another a need for a saving of natural resources (limestone,energy). The present paper deals with some results achieved by a replacement of natural ground limestone with ground recycled concrete. Two different concretes were used as the source of concrete filler. Both of them were ground to three specific surfaces. A limestone of similar specific surfaces was used too. Mortars were mixed with a blend of Portland cement, fly ash and concrete filler or limestone filler. The compressive strengths at the age of 24 hours and 28 days are presented in the paper. The results prove that mortars with fly ash and concrete filler show a similar workability; worse early-age strengths and better 28-day strengths than those with fly ash and limestone.

Název v anglickém jazyce

The use of concrete filler as mineral admixture in concrete

Popis výsledku anglicky

One of the most important challenges of present time concrete science is how to reduce Portland cement production and limit its use. One reason for this is a need for CO2 emission reduction and another a need for a saving of natural resources (limestone,energy). The present paper deals with some results achieved by a replacement of natural ground limestone with ground recycled concrete. Two different concretes were used as the source of concrete filler. Both of them were ground to three specific surfaces. A limestone of similar specific surfaces was used too. Mortars were mixed with a blend of Portland cement, fly ash and concrete filler or limestone filler. The compressive strengths at the age of 24 hours and 28 days are presented in the paper. The results prove that mortars with fly ash and concrete filler show a similar workability; worse early-age strengths and better 28-day strengths than those with fly ash and limestone.

Druh

O - Ostatní výsledky

CEP obor

JN - Stavebnictví

OECD FORD obor

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Projekt

<a href="/cs/project/FR-TI1%2F004" target="_blank" >FR-TI1/004: Výzkum a vývoj betonů na bázi nového pojiva s využitím druhotných surovin se zaměřením na zlepšení kvalitativních a trvanlivostních parametrů betonu.</a><br>

Návaznosti

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

Rok uplatnění

2012

Kód důvěrnosti údajů

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