The Structural Use of Recycled Aggregate Concrete for Renovation of Massive External Walls of Czech Fortification

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F22%3A00358458" target="_blank" >RIV/68407700:21110/22:00358458 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68407700:21720/22:00358458

Výsledek na webu

<a href="https://doi.org/10.3390/buildings12050671" target="_blank" >https://doi.org/10.3390/buildings12050671</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3390/buildings12050671" target="_blank" >10.3390/buildings12050671</a>

Jazyk výsledku

angličtina

Název v původním jazyce

The Structural Use of Recycled Aggregate Concrete for Renovation of Massive External Walls of Czech Fortification

Popis výsledku v původním jazyce

The use of recycled aggregate concrete is mainly negatively affected by its poorer mechanical and long-term properties. However, there are few structural applications for which recycled aggregates can be used. In this case study, the possibility of use as a massive external reinforcement wall is verified. For this structural application, the most important characteristics are freeze-thaw resistance, carbonation resistance and then mechanical properties such as compressive strength. The durability characteristics of the materials have been tested and improved in the study. The mechanical properties and durability of recycled aggregated concrete have been verified and a crystalline mixture has been used to improve durability. The specific structural application of the massive external reinforcement wall is for the renovation of the Czech WW2 concrete fortification, which is one of the most important cultural heritages of the Czech Republic of the 20th century. However, these buildings have not yet been professionally rebuilt, but this research project aims to change this trend. The thickness of the bunker wall is between 0.5 and 3.5 m (depending on the type of bunker) which leads to a huge amount of concrete and primary resources consumption; however, the security function is not necessary today, so the reconstruction could be provided by recycled aggregate concrete. The results showed a positive effect of the crystalline mixture on the essential properties of recycled aggregate concrete. Recycled aggregate concrete with a complete replacement of aggregate by recycled concrete or masonry aggregate is possible to use for the reconstruction of the Czech WW2 concrete fortification and save natural aggregate as a primary resource.

Název v anglickém jazyce

The Structural Use of Recycled Aggregate Concrete for Renovation of Massive External Walls of Czech Fortification

Popis výsledku anglicky

The use of recycled aggregate concrete is mainly negatively affected by its poorer mechanical and long-term properties. However, there are few structural applications for which recycled aggregates can be used. In this case study, the possibility of use as a massive external reinforcement wall is verified. For this structural application, the most important characteristics are freeze-thaw resistance, carbonation resistance and then mechanical properties such as compressive strength. The durability characteristics of the materials have been tested and improved in the study. The mechanical properties and durability of recycled aggregated concrete have been verified and a crystalline mixture has been used to improve durability. The specific structural application of the massive external reinforcement wall is for the renovation of the Czech WW2 concrete fortification, which is one of the most important cultural heritages of the Czech Republic of the 20th century. However, these buildings have not yet been professionally rebuilt, but this research project aims to change this trend. The thickness of the bunker wall is between 0.5 and 3.5 m (depending on the type of bunker) which leads to a huge amount of concrete and primary resources consumption; however, the security function is not necessary today, so the reconstruction could be provided by recycled aggregate concrete. The results showed a positive effect of the crystalline mixture on the essential properties of recycled aggregate concrete. Recycled aggregate concrete with a complete replacement of aggregate by recycled concrete or masonry aggregate is possible to use for the reconstruction of the Czech WW2 concrete fortification and save natural aggregate as a primary resource.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20101 - Civil engineering

Projekt

<a href="/cs/project/DG18P02OVV063" target="_blank" >DG18P02OVV063: Vývoj progresivního sanačního postupu pro restaurování a konzervaci vojenských pevnostních objektů z 30. let 20. století</a><br>

Návaznosti

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

Rok uplatnění

2022

Kód důvěrnosti údajů

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

Název periodika

Buildings

ISSN

2075-5309

e-ISSN

2075-5309

Svazek periodika

12

Číslo periodika v rámci svazku

5

Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

21

Strana od-do

—

Kód UT WoS článku

000803323600001

EID výsledku v databázi Scopus

2-s2.0-85130972262