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Nanomaterials 2018, 8(7), 465; https://doi.org/10.3390/nano8070465

The Influence of Nanomaterials on the Thermal Resistance of Cement-Based Composites—A Review

1
Building Materials and Construction Chemistry, Technische Universität Berlin, Berlin, Gustav-Meyer-Allee 25, 13355 Berlin, Germany
2
Faculty of Civil Engineering and Architecture, West Pomeranian University of Technology, Szczecin, Al. Piastow 50, 70-311 Szczecin, Poland
3
Structural Engineering Department, Mansoura University, Elgomhouria St., Mansoura 35516, Egypt
*
Author to whom correspondence should be addressed.
Received: 7 June 2018 / Revised: 18 June 2018 / Accepted: 21 June 2018 / Published: 26 June 2018
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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. View Full-Text
Keywords: nanomaterials; review; cement-based composites; concrete; elevated temperature; fire resistance; mechanical properties; microstructure nanomaterials; review; cement-based composites; concrete; elevated temperature; fire resistance; mechanical properties; microstructure
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Sikora, P.; Abd Elrahman, M.; Stephan, D. The Influence of Nanomaterials on the Thermal Resistance of Cement-Based Composites—A Review. Nanomaterials 2018, 8, 465.

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