Experimental study of the mechanical properties and microstructure of geopolymer paste containing nano-silica from agricultural waste and crystalline admixtures

This study explored the influence of nano-silica and Crystalline Admixture (CAs) on the mechanical properties and microstructure of geopolymer pastes. Nano-silica and CAs was added to the mixture at 3%, 4% and 5% respectively by weight of fly ash. The bulk density, the yield stress of geopolymer pas...

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Autores principales:	Ar Razi Alvee, Rizka Malinda, Alfie Muna Akbar, Resa Dwi Ashar, Cut Rahmawati, Thamer Alomayri, Ali Raza, Faiz Uddin Ahmed Shaikh
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2022
Materias:	Geopolymer Crystalline admixture Nano-silica Rice husk ash Flexural strength Compressive strength Materials of engineering and construction. Mechanics of materials TA401-492
Acceso en línea:	https://doaj.org/article/268a638bd3934d9ca03e2173c2e19c48
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spelling	oai:doaj.org-article:268a638bd3934d9ca03e2173c2e19c482021-11-22T04:25:48ZExperimental study of the mechanical properties and microstructure of geopolymer paste containing nano-silica from agricultural waste and crystalline admixtures2214-509510.1016/j.cscm.2021.e00792https://doaj.org/article/268a638bd3934d9ca03e2173c2e19c482022-06-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S2214509521003077https://doaj.org/toc/2214-5095This study explored the influence of nano-silica and Crystalline Admixture (CAs) on the mechanical properties and microstructure of geopolymer pastes. Nano-silica and CAs was added to the mixture at 3%, 4% and 5% respectively by weight of fly ash. The bulk density, the yield stress of geopolymer paste, compressive strength, and flexural bending tests were carried out to evaluate the effect of nano-silica and CAs effect on the geopolymer paste. Scanning Electron Microscopy (SEM), X-ray Diffraction (XRD), Transmission Electron Microscope (TEM), and Fourier Transform Infrared Spectroscopy (FTIR) techniques are employed to examine the microstructure of nano-silica and geopolymerization products. The test results demonstrated that adding nano-silica and CAs by 5% increased the bulk density by 5.32%, yield stress by 64.20%, compressive strength by 33.63%, flexural strength and fracture toughness by 232.69% than the control specimens, respectively. The SEM, XRD, and FTIR analysis revealed that the effect of nano-silica and CAs on geopolymer paste occurred mainly in increasing the CSH bond and self-healing products. These findings suggest that rice husk ash can be processed into nano-silica by the sol-gel method and combined with CAs to obtain better mechanical strength.Ar Razi AlveeRizka MalindaAlfie Muna AkbarResa Dwi AsharCut RahmawatiThamer AlomayriAli RazaFaiz Uddin Ahmed ShaikhElsevierarticleGeopolymerCrystalline admixtureNano-silicaRice husk ashFlexural strengthCompressive strengthMaterials of engineering and construction. Mechanics of materialsTA401-492ENCase Studies in Construction Materials, Vol 16, Iss , Pp e00792- (2022)
institution	DOAJ
collection	DOAJ
language	EN
topic	Geopolymer Crystalline admixture Nano-silica Rice husk ash Flexural strength Compressive strength Materials of engineering and construction. Mechanics of materials TA401-492
spellingShingle	Geopolymer Crystalline admixture Nano-silica Rice husk ash Flexural strength Compressive strength Materials of engineering and construction. Mechanics of materials TA401-492 Ar Razi Alvee Rizka Malinda Alfie Muna Akbar Resa Dwi Ashar Cut Rahmawati Thamer Alomayri Ali Raza Faiz Uddin Ahmed Shaikh Experimental study of the mechanical properties and microstructure of geopolymer paste containing nano-silica from agricultural waste and crystalline admixtures
description	This study explored the influence of nano-silica and Crystalline Admixture (CAs) on the mechanical properties and microstructure of geopolymer pastes. Nano-silica and CAs was added to the mixture at 3%, 4% and 5% respectively by weight of fly ash. The bulk density, the yield stress of geopolymer paste, compressive strength, and flexural bending tests were carried out to evaluate the effect of nano-silica and CAs effect on the geopolymer paste. Scanning Electron Microscopy (SEM), X-ray Diffraction (XRD), Transmission Electron Microscope (TEM), and Fourier Transform Infrared Spectroscopy (FTIR) techniques are employed to examine the microstructure of nano-silica and geopolymerization products. The test results demonstrated that adding nano-silica and CAs by 5% increased the bulk density by 5.32%, yield stress by 64.20%, compressive strength by 33.63%, flexural strength and fracture toughness by 232.69% than the control specimens, respectively. The SEM, XRD, and FTIR analysis revealed that the effect of nano-silica and CAs on geopolymer paste occurred mainly in increasing the CSH bond and self-healing products. These findings suggest that rice husk ash can be processed into nano-silica by the sol-gel method and combined with CAs to obtain better mechanical strength.
format	article
author	Ar Razi Alvee Rizka Malinda Alfie Muna Akbar Resa Dwi Ashar Cut Rahmawati Thamer Alomayri Ali Raza Faiz Uddin Ahmed Shaikh
author_facet	Ar Razi Alvee Rizka Malinda Alfie Muna Akbar Resa Dwi Ashar Cut Rahmawati Thamer Alomayri Ali Raza Faiz Uddin Ahmed Shaikh
author_sort	Ar Razi Alvee
title	Experimental study of the mechanical properties and microstructure of geopolymer paste containing nano-silica from agricultural waste and crystalline admixtures
title_short	Experimental study of the mechanical properties and microstructure of geopolymer paste containing nano-silica from agricultural waste and crystalline admixtures
title_full	Experimental study of the mechanical properties and microstructure of geopolymer paste containing nano-silica from agricultural waste and crystalline admixtures
title_fullStr	Experimental study of the mechanical properties and microstructure of geopolymer paste containing nano-silica from agricultural waste and crystalline admixtures
title_full_unstemmed	Experimental study of the mechanical properties and microstructure of geopolymer paste containing nano-silica from agricultural waste and crystalline admixtures
title_sort	experimental study of the mechanical properties and microstructure of geopolymer paste containing nano-silica from agricultural waste and crystalline admixtures
publisher	Elsevier
publishDate	2022
url	https://doaj.org/article/268a638bd3934d9ca03e2173c2e19c48
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Experimental study of the mechanical properties and microstructure of geopolymer paste containing nano-silica from agricultural waste and crystalline admixtures

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