The properties of concrete based on steel slag as a by-product of metallurgical production

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27350%2F20%3A10251719" target="_blank" >RIV/61989100:27350/20:10251719 - isvavai.cz</a>

Result on the web

<a href="https://www.scientific.net/KEM.838.10" target="_blank" >https://www.scientific.net/KEM.838.10</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.4028/www.scientific.net/KEM.838.10" target="_blank" >10.4028/www.scientific.net/KEM.838.10</a>

Result language

angličtina

Original language name

The properties of concrete based on steel slag as a by-product of metallurgical production

Original language description

This article presents the results of research on the use of unstable steel slag with a fraction of 0/8 mm as a 100% substitute for natural aggregate in concrete production. Two types of cements were used for the production of concrete: Portland cement CEM I 42.5N and hybrid cement H-CEMENT. Both of these cements were produced by the company Považská cementárna, a.s., Ladce. The main objective of this study was to assess the suitable type of binder to be combined with unstable steel slag in the production of concrete composite. The prepared concrete was used to test the properties of a fresh mix, i.e. its consistency and bulk density. Hardened concrete was used to test the strength and deformation properties, including cube conpresive strength after 3, 7, 14, 21, 28 and 90 days, as well as prism strength after 28 days. The static modulus of elasticity was determined using prisms after 28 days of age of the test specimens. The attention was also focused on determining the class of leachability of the samples. The durability of concrete prepared on the basis of steel slag was tested in an environment with increased temperature and pressure. The results of the strength characteristics tests show a difference between the 28-day average cube strength of concrete using CEM I 42.5N and H-CEMENT (34.6 MPa and 29.1 MPa), while after 90 days, the average cube strength value stabilized at about 38 MPa. The average values of the static modulus of elasticity when using CEM I 42.5N and H-CEMENT are almost identical, achieving values of 32.5 GPa and 32.8 GPa, respectively. Concrete based on steel slag with CEM I 42.5N and H-CEMENT can be included in leachability class IIb. The results of the durability test of concrete based on steel slag in an environment with increased temperature and pressure confirmed the use of H-CEMENT hybrid cement from the company Považská cementáren, a.s., Ladce, as a suitable binder. (C) 2020 Trans Tech Publications Ltd, Switzerland.

Czech name

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Czech description

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Type

J_SC - Article in a specialist periodical, which is included in the SCOPUS database

CEP classification

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OECD FORD branch

20703 - Mining and mineral processing

Project

—

Continuities

V - Vyzkumna aktivita podporovana z jinych verejnych zdroju

Publication year

2020

Confidentiality

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

Name of the periodical

Key Engineering Materials

ISSN

1013-9826

e-ISSN

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Volume of the periodical

838

Issue of the periodical within the volume

Neuveden

Country of publishing house

CH - SWITZERLAND

Number of pages

13

Pages from-to

10-22

UT code for WoS article

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EID of the result in the Scopus database

2-s2.0-85087029787