Construction and Building Materials, ( ISI ), Volume (226), Year (2019-11) , Pages (418-427)

Title : ( Self-compacting architectural concrete production using red mud )

Authors: Mansour Ghalehnovi , الیاس اسدی شمس آبادی , علی خدابخشیان , فربد سورمه , Jorge de Brito ,

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Abstract

Red mud (RM) is a toxic waste, rich in coloured pigments, which affects landfills and surrounding environments due to its high alkalinity. But it is suitable for architectural coloured concrete production since it contains a high volume of ferric oxide (Fe2O3), aluminium oxide Al2O3, and Silicon dioxide (SiO2). Therefore, the application of RM in concrete production not only may benefit the construction industry but also helps mitigating the environmental effects of alumina refineries. In addition, using RM can help to achieve a green coloured concrete with similar properties to current concrete made with white cement. This study intends to appraise the effects of red mud (RM) in self-compacting architectural concrete (SCAC) production as cement and filler replacement. For that purpose, seven concrete mixes incorporating various ratios of RM as partial cement (2.5%, 5.0%, and 7.5%) and filler (25%, 50%, and 75%) replacement were produced in the laboratory. The results revealed that RM does not significantly affect the performance of concrete, as the variations of the results were mostly lower than 5% in relation to the reference concrete. Moreover, incorporating RM in SCAC can improve the durability to sulphate attack in terms of weight loss, a very important parameter when evaluating the performance of architectural concrete, by about 27%. In addition, using RM can help achieve a green coloured concrete with similar properties to current concrete made with white cement.

Keywords

, Red mud, Self-compacting architectural concrete, Rheological properties, Durability properties, Mechanical performance
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@article{paperid:1075299,
author = {Ghalehnovi, Mansour and الیاس اسدی شمس آبادی and علی خدابخشیان and فربد سورمه and Jorge De Brito},
title = {Self-compacting architectural concrete production using red mud},
journal = {Construction and Building Materials},
year = {2019},
volume = {226},
month = {November},
issn = {0950-0618},
pages = {418--427},
numpages = {9},
keywords = {Red mud; Self-compacting architectural concrete; Rheological properties; Durability properties; Mechanical performance},
}

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%0 Journal Article
%T Self-compacting architectural concrete production using red mud
%A Ghalehnovi, Mansour
%A الیاس اسدی شمس آبادی
%A علی خدابخشیان
%A فربد سورمه
%A Jorge De Brito
%J Construction and Building Materials
%@ 0950-0618
%D 2019

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