Cement Kiln By-Pass Dust: An Effective Alkaline Activator for Pozzolanic Materials

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26310%2F18%3APU129051" target="_blank" >RIV/00216305:26310/18:PU129051 - isvavai.cz</a>

Result on the web

<a href="https://www.mdpi.com/1996-1944/11/9/1770" target="_blank" >https://www.mdpi.com/1996-1944/11/9/1770</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3390/ma11091770" target="_blank" >10.3390/ma11091770</a>

Result language

angličtina

Original language name

Cement Kiln By-Pass Dust: An Effective Alkaline Activator for Pozzolanic Materials

Original language description

Cement kiln by-pass dust (CKD) is a fine-grained by-product of Portland clinker manufacturing. Its chemical composition is not suitable for returning back into feedstock and, therefore, it has to be discharged. Such an increasing waste production contributes to the high environmental impact of the cement industry. A possible solution for the ecological processing of CKD is its incorporation into alkali-activated blast furnace slag binders. Thanks to high alkaline content, CKD serves as an effective accelerator for latent hydraulic substances which positively affect their mechanical properties. It was found out that CKD in combination with sodium carbonate creates sodium hydroxide in situ which together with sodium water glass content increases the dissolution of blast furnace slag particles and subsequently binder phase formation resulting in better flexural and compressive strength development compared to the sample without it. At the same time, the addition of CKD compensates the autogenous shrinkage of alkali-activated materials reducing the risk of material cracking. On the other hand, this type of inorganic admixture accelerates the hydration process causing rapid loss of workability.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

20102 - Construction engineering, Municipal and structural engineering

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

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

Publication year

2018

Confidentiality

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

Name of the periodical

Materials

ISSN

1996-1944

e-ISSN

—

Volume of the periodical

11

Issue of the periodical within the volume

9

Country of publishing house

CH - SWITZERLAND

Number of pages

9

Pages from-to

1770-1770

UT code for WoS article

000446395200286

EID of the result in the Scopus database

2-s2.0-85053637465