Laboratory verification of the properties of recycled fine aggregates and the effect of different replacement percentages on concrete properties

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F24%3A00379873" target="_blank" >RIV/68407700:21110/24:00379873 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.14311/APP.2024.49.0031" target="_blank" >https://doi.org/10.14311/APP.2024.49.0031</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.14311/APP.2024.49.0031" target="_blank" >10.14311/APP.2024.49.0031</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Laboratory verification of the properties of recycled fine aggregates and the effect of different replacement percentages on concrete properties

Popis výsledku v původním jazyce

This research work deals with the issue of laboratory testing of commonly available recycled fine aggregates, namely concrete recyclate, mixed recyclate and brick recyclate. Their geometrical properties: granulometric composition and fine particle content, including physical properties: bulk density and water absorption are investigated. The tests themselves are carried out according to available standards, which are currently mainly standards for testing natural aggregates, and it is necessary to assess the suitability of these tests for recycled aggregates as well. The results found for concrete recyclates confirm the use of these standards to obtain the properties mentioned, but the bulk density and absorption tests are inconclusive in the case of mixed and brick recyclates. Subsequently, test concrete specimens were produced in which natural fine aggregate and concrete recyclate were substituted at 33, 66 and 100 %. A series of tests were performed on the hardened concrete: bulk density, absorption, porosity and compressive strength. From the results obtained, the use of concrete recyclate in concretes with the replacement of natural fine aggregate at 33% is suitable, without a significant reduction in the observed properties.

Název v anglickém jazyce

Laboratory verification of the properties of recycled fine aggregates and the effect of different replacement percentages on concrete properties

Popis výsledku anglicky

This research work deals with the issue of laboratory testing of commonly available recycled fine aggregates, namely concrete recyclate, mixed recyclate and brick recyclate. Their geometrical properties: granulometric composition and fine particle content, including physical properties: bulk density and water absorption are investigated. The tests themselves are carried out according to available standards, which are currently mainly standards for testing natural aggregates, and it is necessary to assess the suitability of these tests for recycled aggregates as well. The results found for concrete recyclates confirm the use of these standards to obtain the properties mentioned, but the bulk density and absorption tests are inconclusive in the case of mixed and brick recyclates. Subsequently, test concrete specimens were produced in which natural fine aggregate and concrete recyclate were substituted at 33, 66 and 100 %. A series of tests were performed on the hardened concrete: bulk density, absorption, porosity and compressive strength. From the results obtained, the use of concrete recyclate in concretes with the replacement of natural fine aggregate at 33% is suitable, without a significant reduction in the observed properties.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

20501 - Materials engineering

Projekt

<a href="/cs/project/SS03010302" target="_blank" >SS03010302: Vývoj efektivních nástrojů pro minimalizaci vzniku stavebního a demoličního odpadu, jeho monitoring a opětovné využití</a><br>

Návaznosti

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

Rok uplatnění

2024

Kód důvěrnosti údajů

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

Název statě ve sborníku

NMM 2023 Nano & Macro Mechanics

ISBN

978-80-01-07378-0

ISSN

—

e-ISSN

—

Počet stran výsledku

5

Strana od-do

31-35

Název nakladatele

ACTA Polytechnica CTU

Místo vydání

Prague

Místo konání akce

Praha

Datum konání akce

12. 9. 2024

Typ akce podle státní příslušnosti

CST - Celostátní akce

Kód UT WoS článku

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