Effects of load types and critical molar ratios on strength properties and geopolymerization mechanism

In this study, the effect of SiO2/Al2O3 (S/A), Na2O/Al2O3 (N/A) and H2O/Na2O (H/N) molar ratios on bending and compressive strength of geopolymer were investigated. The geopolymerization mechanism was also analyzed from microstructure difference by FTIR. The experimental results showed that compress...

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Autores principales:	Meng Tao, Ahmed Sara, Dai Dawang, Yu Yue
Formato:	article
Lenguaje:	EN
Publicado:	De Gruyter 2021
Materias:	geopolymer critical molar ratio load type strength properties mechanism Technology T Chemical technology TP1-1185
Acceso en línea:	https://doaj.org/article/7394d951762a45a0bc9b4dff059ccca8
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spelling	oai:doaj.org-article:7394d951762a45a0bc9b4dff059ccca82021-12-05T14:11:02ZEffects of load types and critical molar ratios on strength properties and geopolymerization mechanism1605-812710.1515/rams-2021-0019https://doaj.org/article/7394d951762a45a0bc9b4dff059ccca82021-05-01T00:00:00Zhttps://doi.org/10.1515/rams-2021-0019https://doaj.org/toc/1605-8127In this study, the effect of SiO2/Al2O3 (S/A), Na2O/Al2O3 (N/A) and H2O/Na2O (H/N) molar ratios on bending and compressive strength of geopolymer were investigated. The geopolymerization mechanism was also analyzed from microstructure difference by FTIR. The experimental results showed that compressive strength and bending strength of geopolymer has an opposite reaction under different critical molar ratios. The increase of S/A molar ratio and the decrease of N/A and H/N molar ratios have resulted in an increase of the compressive strength. However, it caused a noticeable decrease in bending strength. The microstructure of geopolymer indicated that the degree of polymerization and cohesion of geopolymer have systematical depending on these critical molar ratios, making the mechanical properties of geopolymer susceptible to different types of loads. This paper reveals the relationship between the microstructure of geopolymer and different mechanical properties and helps to selectively prepare corresponding geopolymer for different loading patterns.Meng TaoAhmed SaraDai DawangYu YueDe Gruyterarticlegeopolymercritical molar ratioload typestrength propertiesmechanismTechnologyTChemical technologyTP1-1185ENReviews on Advanced Materials Science, Vol 60, Iss 1, Pp 216-222 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	geopolymer critical molar ratio load type strength properties mechanism Technology T Chemical technology TP1-1185
spellingShingle	geopolymer critical molar ratio load type strength properties mechanism Technology T Chemical technology TP1-1185 Meng Tao Ahmed Sara Dai Dawang Yu Yue Effects of load types and critical molar ratios on strength properties and geopolymerization mechanism
description	In this study, the effect of SiO2/Al2O3 (S/A), Na2O/Al2O3 (N/A) and H2O/Na2O (H/N) molar ratios on bending and compressive strength of geopolymer were investigated. The geopolymerization mechanism was also analyzed from microstructure difference by FTIR. The experimental results showed that compressive strength and bending strength of geopolymer has an opposite reaction under different critical molar ratios. The increase of S/A molar ratio and the decrease of N/A and H/N molar ratios have resulted in an increase of the compressive strength. However, it caused a noticeable decrease in bending strength. The microstructure of geopolymer indicated that the degree of polymerization and cohesion of geopolymer have systematical depending on these critical molar ratios, making the mechanical properties of geopolymer susceptible to different types of loads. This paper reveals the relationship between the microstructure of geopolymer and different mechanical properties and helps to selectively prepare corresponding geopolymer for different loading patterns.
format	article
author	Meng Tao Ahmed Sara Dai Dawang Yu Yue
author_facet	Meng Tao Ahmed Sara Dai Dawang Yu Yue
author_sort	Meng Tao
title	Effects of load types and critical molar ratios on strength properties and geopolymerization mechanism
title_short	Effects of load types and critical molar ratios on strength properties and geopolymerization mechanism
title_full	Effects of load types and critical molar ratios on strength properties and geopolymerization mechanism
title_fullStr	Effects of load types and critical molar ratios on strength properties and geopolymerization mechanism
title_full_unstemmed	Effects of load types and critical molar ratios on strength properties and geopolymerization mechanism
title_sort	effects of load types and critical molar ratios on strength properties and geopolymerization mechanism
publisher	De Gruyter
publishDate	2021
url	https://doaj.org/article/7394d951762a45a0bc9b4dff059ccca8
work_keys_str_mv	AT mengtao effectsofloadtypesandcriticalmolarratiosonstrengthpropertiesandgeopolymerizationmechanism AT ahmedsara effectsofloadtypesandcriticalmolarratiosonstrengthpropertiesandgeopolymerizationmechanism AT daidawang effectsofloadtypesandcriticalmolarratiosonstrengthpropertiesandgeopolymerizationmechanism AT yuyue effectsofloadtypesandcriticalmolarratiosonstrengthpropertiesandgeopolymerizationmechanism
_version_	1718371480381685760

Effects of load types and critical molar ratios on strength properties and geopolymerization mechanism

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