Recycled concrete for foundation structure: LCA case study

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21720%2F21%3A00356770" target="_blank" >RIV/68407700:21720/21:00356770 - isvavai.cz</a>

Result on the web

<a href="https://doi.org/10.1088/1757-899X/1196/1/012012" target="_blank" >https://doi.org/10.1088/1757-899X/1196/1/012012</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1088/1757-899X/1196/1/012012" target="_blank" >10.1088/1757-899X/1196/1/012012</a>

Result language

angličtina

Original language name

Recycled concrete for foundation structure: LCA case study

Original language description

Concrete containing primary raw resources such as sand and gravel can be replaced by recycled aggregate concretes (RAC). But recycling processes are energy-consuming and thus energy resources are consumed. To investigate the resource consumption and overall environmental impact related to the life cycle of RAC, Life Cycle Assessment (LCA) was used to compare ten RAC foundation structures with two foundation structures containing just natural aggregate (NA). This paper presents the characteristics of two types of RAC for the foundation with various replacement rates of NA (30%, 50%, 100%). Various concrete mixtures were designed with the three replacement ratios of natural gravel, the two amount of cement and the two effective water-cement ratios. Unsurprisingly, the NA foundation structures have smaller crude oil consumption. The NAC I 16/20 foundation consumed 84 kg of crude oil. Contrarily, this foundation has the biggest consumption of natural aggregate (7.6 t). Moreover, the RAC foundation structures have beneficial impacts in the Metal depletion category. For example, the impact of the RAC I C30_V1 foundation is -31,7 kg Fe eq. Most of the RAC foundation structures demonstrated the overall environmental impact lower than NA foundation structures, suggesting that RAC could be suitable replacements for standard concretes.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

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OECD FORD branch

20703 - Mining and mineral processing

Project

<a href="/en/project/LTAIN19205" target="_blank" >LTAIN19205: Design of performance based concrete using sand reclaimed from construction & demolition wastes</a><br>

Continuities

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

Publication year

2021

Confidentiality

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

Article name in the collection

IOP Conference Series: Materials Science and Engineering

ISBN

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ISSN

1757-899X

e-ISSN

1757-899X

Number of pages

12

Pages from-to

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Publisher name

IOP Publishing Ltd

Place of publication

Bristol

Event location

Dublin

Event date

Jul 19, 2021

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

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