ScholarLens Back to search
2003•Advances in Cement ResearchRequires access

Recrystallisation of granulated blast-furnace slags and the significance for the hydraulic reactivity

P. Z. Wang, R. Trettin, V. Rudert, R. Umlauf

Open publisher page 1 citations

Abstract

In this paper the recrystallisation reactions of granulated blast-furnace slags (GBS) with different chemical compositions were studied. The investigations were carried out with X-ray powder method on the chemically modified technical GBS. During the heating merwinite first crystallised at approximately 750°C and converted to melilite with rising temperatures. The concentrations of the crystallised mineral phases merwinite and melilite depend on the CaO content. The merwinite concentration increases and the melilite concentration decreases with rising CaO content. Depending on the chemical composition the structural parameters of the melilite vary in the range between gehlenite and åkmernite. Due to the good correlation between the gehlenite concentration and the reactivity of the GBS the gehlenite concentration can be regarded as an indicator for the reactivity of the GBS.

About this research paper

What this paper is about

In this paper the recrystallisation reactions of granulated blast-furnace slags (GBS) with different chemical compositions were studied. The investigations were carried out with X-ray powder method on the chemically modified technical GBS. During the heating merwinite first crystallised at approximately 750°C and converted to melilite with rising temperatures. The concentrations of the crystallised mineral phases merwinite and melilite depend on the CaO content. The merwinite concentration increases and the melilite concentration decreases with rising CaO content. Depending on the chemical composition the structural parameters of the melilite vary in the range between gehlenite and åkmernite. Due to the good correlation between the gehlenite concentration and the reactivity of the GBS the gehlenite concentration can be regarded as an indicator for the reactivity of the GBS.

Why it matters

OpenAlex reports 1 citations for this work. Citation counts describe recorded attention and do not establish research quality.

Key contribution

A contribution statement is not available in the OpenAlex record.

Method / approach

Method details are not available in the OpenAlex metadata.

Main findings

Findings are not separately available in the OpenAlex metadata.

Limitations

Limitations are not available in the OpenAlex metadata.

Applications

Application details are not available in the OpenAlex metadata.

Available abstract

In this paper the recrystallisation reactions of granulated blast-furnace slags (GBS) with different chemical compositions were studied. The investigations were carried out with X-ray powder method on the chemically modified technical GBS. During the heating merwinite first crystallised at approximately 750°C and converted to melilite with rising temperatures. The concentrations of the crystallised mineral phases merwinite and melilite depend on the CaO content. The merwinite concentration increases and the melilite concentration decreases with rising CaO content. Depending on the chemical composition the structural parameters of the melilite vary in the range between gehlenite and åkmernite. Due to the good correlation between the gehlenite concentration and the reactivity of the GBS the gehlenite concentration can be regarded as an indicator for the reactivity of the GBS.

Key concepts: Melilite, Gehlenite, Ground granulated blast-furnace slag, Metallurgy, Reactivity (psychology), Blast furnace, Materials science, Chemical composition

Related papers

Related paper 1Related paper 2
Back to paper searchBrowse research topicsOriginal source
Recrystallisation of granulated blast-furnace slags and the significance for the hydraulic reactivity — Research Paper | ScholarLens