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Influence of minera...
Influence of mineralogy on the hydraulic properties of ladle slag
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- Adolfsson, Daniel (author)
- SSAB Merox SE-61380 Oxelösund, Sweden
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- Robinson, Ryan (author)
- Luleå tekniska universitet,Institutionen för samhällsbyggnad och naturresurser
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- Engström, Fredrik (author)
- Luleå tekniska universitet,Industriell miljö- och processteknik
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- Björkman, Bo (author)
- Luleå tekniska universitet,Industriell miljö- och processteknik
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(creator_code:org_t)
- Elsevier BV, 2011
- 2011
- English.
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In: Cement and Concrete Research. - : Elsevier BV. - 0008-8846 .- 1873-3948. ; 41:8, s. 865-871
- Related links:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Subject headings
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- The present study is aimed at investigating the hydraulic characteristics of ladle furnace slag (LFS), under the pretence of using LFS as a cement substitute in certain applications. Furthermore, LFS has been considered as a possible activator in a blend containing 50% LFS, and 50% ground granulated blast furnace slag (GGBFS). Phases detected in LFS were quantified using Rietveld analysis. Calorimetric studies were performed at 20, 25 and 30 °C in order to calculate the apparent activation energy of hydration and thereby to suggest a kinetic model for the tested compositions within this temperature interval. In addition, compressive strength tests were performed on mortar prisms made with LFS, and LFS/GGBFS which had hydrated for 2, 7 and 28 days. Both compositions reached acceptable early strengths, (e.g. LFS, 33.1 MPa, and LFS/GGBFS, 17.9 MPa, after 2 days), but after 28 days hydration the blend was superior to neat LFS. Related apparent activation energies were determined using an Avrami–Erofeev model and gave Ea = 58 kJ/mol for neat LFS and Ea = 63 kJ/mol for the blend. The results imply that LFS or a LFS/GGBFS blend can be favourably used as supplement in binder applications such as binder in by-product metallurgical briquettes, which are used as recycle to the blast furnace or basic oxygen furnace depending on the specific briquette composition.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Materialteknik -- Metallurgi och metalliska material (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering -- Metallurgy and Metallic Materials (hsv//eng)
Keyword
- Calcium aluminate cement (D)
- Calorimetry (A)
- Hydration (A)
- Ladle furnace slag
- Process Metallurgy
- Processmetallurgi
Publication and Content Type
- ref (subject category)
- art (subject category)
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