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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-PLAGHKI, Tom Hutt, Mikael Lutter, Guillaume VANDEVENNE, Niels SCHREURS, Sonja SCHROEYERS, Wouter |
Issue Date: | 2017 | Publisher: | ELSEVIER SCI LTD | Source: | CONSTRUCTION AND BUILDING MATERIALS, 151, p. 819-826 | 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. | Keywords: | Alkali activated cements;Concrete;Red mud;Structure formation;CEMENTITIOUS MATERIAL;BAUXITE RESIDUE;MICROSTRUCTURE;GEOPOLYMERS;COMPOSITES;METAKAOLIN;CERAMICS;BEHAVIOR | Document URI: | http://hdl.handle.net/1942/24843 | ISSN: | 0950-0618 | e-ISSN: | 1879-0526 | DOI: | 10.1016/j.conbuildmat.2017.06.031 | ISI #: | 000408183700082 | Rights: | (C) 2017 Elsevier Ltd. All rights reserved. | Category: | A1 | Type: | Journal Contribution | Validations: | ecoom 2018 |
Appears in Collections: | Research publications |
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krivenko 1.pdf Restricted Access | Published version | 1.32 MB | Adobe PDF | View/Open Request a copy |
submitted non peer reviewed author version.pdf | Non Peer-reviewed author version | 780.08 kB | Adobe PDF | View/Open |
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