A comparative study on concrete slurry waste: performance optimization from the wet-milling process

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27690%2F21%3A10249172" target="_blank" >RIV/61989100:27690/21:10249172 - isvavai.cz</a>

Výsledek na webu

<a href="https://link.springer.com/article/10.1617/s11527-021-01771-1" target="_blank" >https://link.springer.com/article/10.1617/s11527-021-01771-1</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1617/s11527-021-01771-1" target="_blank" >10.1617/s11527-021-01771-1</a>

Jazyk výsledku

angličtina

Název v původním jazyce

A comparative study on concrete slurry waste: performance optimization from the wet-milling process

Popis výsledku v původním jazyce

Concrete slurry waste (CSW) is a mixture of fine aggregates, cement hydration products and residual cement particles obtained from the sedimentation pits during the production of concrete. In the present study, CSW with different grinding durations were evaluated; the properties of the CSW and the CSW-cement composition were compared under the influence of wet-milling. The results indicated that the particle size of the CSW decreased and the dispersion stability of the slurry was improved after wet-milling treatment. The increasing ettringite peak suggested that the mineral admixture hydrated during wet-milling. However, carbonization also occurred during the process. The nucleus effect of wet-milled CSW not only increased the hydration heat and compressive strength of cement, but also significantly enhanced the pore structure and chloride penetration resistance of the mixtures. Although the gel pore volume fraction for the mixture containing original CSW is higher than that of the reference mixtures, the compressive strength and chloride penetration resistance are weak due to the loose structure caused by the dilution effect.

Název v anglickém jazyce

A comparative study on concrete slurry waste: performance optimization from the wet-milling process

Popis výsledku anglicky

Concrete slurry waste (CSW) is a mixture of fine aggregates, cement hydration products and residual cement particles obtained from the sedimentation pits during the production of concrete. In the present study, CSW with different grinding durations were evaluated; the properties of the CSW and the CSW-cement composition were compared under the influence of wet-milling. The results indicated that the particle size of the CSW decreased and the dispersion stability of the slurry was improved after wet-milling treatment. The increasing ettringite peak suggested that the mineral admixture hydrated during wet-milling. However, carbonization also occurred during the process. The nucleus effect of wet-milled CSW not only increased the hydration heat and compressive strength of cement, but also significantly enhanced the pore structure and chloride penetration resistance of the mixtures. Although the gel pore volume fraction for the mixture containing original CSW is higher than that of the reference mixtures, the compressive strength and chloride penetration resistance are weak due to the loose structure caused by the dilution effect.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20100 - Civil engineering

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

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

Rok uplatnění

2021

Kód důvěrnosti údajů

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

Název periodika

Materials and Structures/Materiaux et Constructions

ISSN

1359-5997

e-ISSN

—

Svazek periodika

54

Číslo periodika v rámci svazku

5

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

15

Strana od-do

—

Kód UT WoS článku

000694244100001

EID výsledku v databázi Scopus

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