In the direction of reducing greenhouse emissions and energy consumption related to the activities of the cement and concrete industry, the increasingly popular concept of eco-sustainability is leading to the development and optimization of new technologies and low impact construction materials. In this respect, geopolymers are spreading more and more in the cementitious materials field, exhibiting technological properties that are highly competitive to conventional Portland concrete mixes. In this paper, the mix design, mechanical properties, microstructural features, and mineralogical properties of geopolymer mixes are discussed, investigating the influence of the main synthesis parameters (curing regime, type of precursors, activator molarity, mix design) on the performance of the final product. Moreover, recent developments of geopolymer technology based on the integration of functional nanofillers are reported. The novelty of the manuscript is to provide a detailed collection of past and recent comparative studies between geopolymers and ordinary Portland concrete mixes in terms of strength properties, durability, fire resistance, and environmental impact by LCA analysis, intending to evaluate the advantages and limitations of this technology and direct research towards a targeted optimization of the material.

Valente_Geopolymers_Cement_Matrix_2021 / Valente, Marco; Sambucci, Matteo; Sibai, Abbas. - In: NANOMATERIALS. - ISSN 2079-4991. - 11:8(2021), p. 2007. [10.3390/nano11082007]

Valente_Geopolymers_Cement_Matrix_2021

Marco Valente
;
Matteo Sambucci;Abbas Sibai
2021

Abstract

In the direction of reducing greenhouse emissions and energy consumption related to the activities of the cement and concrete industry, the increasingly popular concept of eco-sustainability is leading to the development and optimization of new technologies and low impact construction materials. In this respect, geopolymers are spreading more and more in the cementitious materials field, exhibiting technological properties that are highly competitive to conventional Portland concrete mixes. In this paper, the mix design, mechanical properties, microstructural features, and mineralogical properties of geopolymer mixes are discussed, investigating the influence of the main synthesis parameters (curing regime, type of precursors, activator molarity, mix design) on the performance of the final product. Moreover, recent developments of geopolymer technology based on the integration of functional nanofillers are reported. The novelty of the manuscript is to provide a detailed collection of past and recent comparative studies between geopolymers and ordinary Portland concrete mixes in terms of strength properties, durability, fire resistance, and environmental impact by LCA analysis, intending to evaluate the advantages and limitations of this technology and direct research towards a targeted optimization of the material.
2021
CO2 emissions; LCA analysis; Portland replacement; durability; energy efficiency; geopolymer concrete mixes; geopolymer nanocomposites; high-temperature behavior; mechanical; properties; microstructure
01 Pubblicazione su rivista::01a Articolo in rivista
Valente_Geopolymers_Cement_Matrix_2021 / Valente, Marco; Sambucci, Matteo; Sibai, Abbas. - In: NANOMATERIALS. - ISSN 2079-4991. - 11:8(2021), p. 2007. [10.3390/nano11082007]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/1685699
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