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Main Title: The influence of nanomaterials on the thermal resistance of cement-based composites – a review
Author(s): Pawel, Sikora
Abd Elrahman, Mohamed
Stephan, Dietmar
Type: Article
Language Code: en
Abstract: Exposure to elevated temperatures has detrimental effects on the properties of cementitious composites, leading to irreversible changes, up to total failure. Various methods have been used to suppress the deterioration of concrete under elevated temperature conditions. Recently, nanomaterials have been introduced as admixtures, which decrease the thermal degradation of cement-based composites after exposure to high temperatures. This paper presents a comprehensive review of recent developments related to the effects of nanoparticles on the thermal resistance of cementitious composites. The review provides an updated report on the effects of temperature on the properties of cement-based composites, as well as a detailed analysis of the available literature regarding the inclusion of nanomaterials and their effects on the thermal degradation of cementitious composites. The data from the studies reviewed indicate that the inclusion of nanoparticles in composites protects from strength loss, as well as contributing to a decrease in disruptive cracking, after thermal exposure. From all the nanomaterials presented, nanosilica has been studied the most extensively. However, there are other nanomaterials, such as carbon nanotubes, graphene oxide, nanoclays, nanoalumina or nano-iron oxides, that can be used to produce heat-resistant cementitious composites. Based on the data available, it can be concluded that the effects of nanomaterials have not been fully explored and that further investigations are required, so as to successfully utilize them in the production of heat-resistant cementitious composites.
Issue Date: 26-Jun-2018
Date Available: 28-Jun-2018
DDC Class: 570 Biowissenschaften; Biologie
540 Chemie und zugeordnete Wissenschaften
Subject(s): nanomaterials
cement-based composites
elevated temperature
fire resistance
mechanical properties
Sponsor/Funder: DFG, TH 662/19-1, Open Access Publizieren 2017 - 2018 / Technische Universität Berlin
Journal Title: Nanomaterials
Publisher: MDPI
Publisher Place: Basel
Volume: 8
Issue: 7
Article Number: 465
Publisher DOI: 10.3390/nano8070465
EISSN: 2079-4991
Appears in Collections:FG Baustoffe und Bauchemie » Publications

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