High-performance concrete with fine recycled concrete aggregate: Experimental assessment

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21720%2F23%3A00362151" target="_blank" >RIV/68407700:21720/23:00362151 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1002/suco.202200734" target="_blank" >https://doi.org/10.1002/suco.202200734</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1002/suco.202200734" target="_blank" >10.1002/suco.202200734</a>

Jazyk výsledku

angličtina

Název v původním jazyce

High-performance concrete with fine recycled concrete aggregate: Experimental assessment

Popis výsledku v původním jazyce

High-performance concrete (HPC) is a cement-based material with excellent properties and durability which determines high-level structural utilization. However, the necessity of high-quality natural resources such as quartz powder and sand and a high amount of cement and silica fume and reinforcement by fibers causes a high environmental footprint and costs. One of the possible ways to reduce the environmental footprint and cost of the HPC/UHPC is to replace the powder or sand with secondary raw materials. In this study, the two types and three fractions of fine recycled concrete aggregate (fRCA) are used as supplementary materials in HPC. The reference mixture is based on the UHPC mixture without reinforcement to find out the influence of aggregate replacement. The properties of fresh and hardened concrete are examined. The results show a slight decline of mechanical properties however the autogenous shrinkage decrease with the replacement of natural aggregate by fRCA, which shows the possibilities of natural resources savings and thus leads to a lower environmental footprint of concrete structures as a contribution to the solution of sustainable development goals set by the United Nations in 2015 as an action plan up to 2030.

Název v anglickém jazyce

High-performance concrete with fine recycled concrete aggregate: Experimental assessment

Popis výsledku anglicky

High-performance concrete (HPC) is a cement-based material with excellent properties and durability which determines high-level structural utilization. However, the necessity of high-quality natural resources such as quartz powder and sand and a high amount of cement and silica fume and reinforcement by fibers causes a high environmental footprint and costs. One of the possible ways to reduce the environmental footprint and cost of the HPC/UHPC is to replace the powder or sand with secondary raw materials. In this study, the two types and three fractions of fine recycled concrete aggregate (fRCA) are used as supplementary materials in HPC. The reference mixture is based on the UHPC mixture without reinforcement to find out the influence of aggregate replacement. The properties of fresh and hardened concrete are examined. The results show a slight decline of mechanical properties however the autogenous shrinkage decrease with the replacement of natural aggregate by fRCA, which shows the possibilities of natural resources savings and thus leads to a lower environmental footprint of concrete structures as a contribution to the solution of sustainable development goals set by the United Nations in 2015 as an action plan up to 2030.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20102 - Construction engineering, Municipal and structural engineering

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2023

Kód důvěrnosti údajů

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

Název periodika

Structural Concrete

ISSN

1464-4177

e-ISSN

1751-7648

Svazek periodika

24

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

11

Strana od-do

1868-1878

Kód UT WoS článku

000904585200001

EID výsledku v databázi Scopus

2-s2.0-85145266466