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Title: Development of alkali activated cements and concrete mixture design with high volumes of red mud
Authors: Krivenko, Pavel
Kovalchuk, Oleksandr
Pasko, Anton
Croymans, Tom
Hutt, Mikael
Lutter, Guillaume
Vandevenne, Niels
Schreurs, Sonja
Schroeyers, Wouter
Issue Date: 2017
Abstract: Dedicated cement compositions were formulated to enable the incorporation of large volume fractions of red mud in alkali activated cements, taking into account the role of the aluminosilicate phase in the processes of hydration and hardening. High volume red mud alkali activated cements were synthesized using a proper combination of red mud, low basic aluminosilicate compounds with a glass phase (blast-furnace slag) and additives selected from high-basic Ca-containing cements with a crystalline structure (Portland cement). Compressive strength of the cements under study is 30-60 MPa (tested in mortar). The microstructure of the hardened cement paste and the role of red mud in the structure formation process were investigated. In addition to the use of red mud in cement, its use as an aggregate in concrete was studied to enable the use of larger quantities in the final concrete. In concrete road bases, the use of red mud can reach even 90% by mass. Since enhanced concentrations of naturally occurring radionuclides can be present in red mud this aspect was investigated to make sure that these materials are safe to use from a radiological point of view. (C) 2017 Elsevier Ltd. All rights reserved.
Notes: [Krivenko, Pavel; Kovalchuk, Oleksandr; Pasko, Anton] Kyiv Natl Univ Construct & Architecture, VD Glukhovsky Sci Res Inst Binders & Mat, Povitroflotsky Pr 31, UA-03037 Kiev, Ukraine. [Croymans, Tom; Vandevenne, Niels; Schreurs, Sonja; Schroeyers, Wouter] Hasselt Univ, Fac Engn Technol, Nucl Technol, NuTeC,CMK, Agoralaan Bldg H, B-3590 Diepenbeek, Belgium. [Hutt, Mikael; Lutter, Guillaume] JRC Geel, Retieseweg 111, B-2440 Geel, Belgium.
URI: http://hdl.handle.net/1942/24843
DOI: 10.1016/j.conbuildmat.2017.06.031
ISI #: 000408183700082
ISSN: 0950-0618
Category: A1
Type: Journal Contribution
Appears in Collections: Research publications

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